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Weather Abbreviations

Look through 2217 acronyms and abbreviations related to Weather:

AAA	Amended meteorological message
AAAS	American Association for the Advancement of Science
AAL	Above Aerodrome Level
AAWU	Alaskan Aviation Weather Unit
ABNDT	Abundant
ABNML	Abnormal
ABT	About
ABV	Above
AC	Anticipated Convection Outlook
AC	Altocumulus
ACARS	ARINC Communications Addressing and Reporting System
ACC	Area Control Center
ACCAS	Altocumulus Castellanus
ACCID	Notification of an aircraft accident
ACCUM	Accumulate
ACFT	Aircraft
ACK	Acknowledge (telecommunications; Cf. NAK)
ACLT	Accelerate
ACLTD	Accelerated
ACLTG	Accelerating
ACLTS	Accelerates
ACPT	Accept
ACPY	Accompany
ACRS	Across
ACSL	Altocumulus Standing Lenticular
ACT	Active
ACTV	Active
ACTVTY	Activity
ACYC	Anticyclone
AD	Aerodrome
ADA	Advisory Area
ADDN	Addition
ADDS	Aviation Digital Data Service
ADJ	Adjacent
ADL	Additional
ADM	Administrative Messages
ADQT	Adequate
ADQTLY	Adequately
ADR	Advisory Route
ADRNDCK	Adirondack
Advct	Advect
ADVCTD	Advected
ADVCTG	Advecting
ADVCTN	Advection
Advcts	Advects
ADVIS	Headwater Advisory Program
ADVN	Advance
ADVNG	Advancing
ADVS	Advisory Service
ADVY	Advisory

ADVYS	Advisories
ADZ	Advise
afct	affect
AFCTD	Affected
AFCTG	Affecting
AFD	Area Forecast Discussion
AFDK	After Dark
AFOS	Automation of Field Operations and Services
AFSS	Automated Flight Service Station
AFT	Afternoon
AFT	After
AFTN	Air Force Television Network
AFTN	Afternoon
AFW	Air Force Weather
AFWA	Air Force Weather Agency
AFWIN	Air Force Weather Information Network
AGC	Automatic Gain Control
AGFS	Aviation Gridded Forecast System
AGL	Above Ground Level
AGN	Again
AGRD	Agreed
AGRMT	Agreement
AGRS	Agrees
AHD	Ahead
AHOS	Automatic Hydrologic Observing System
AHOS-S	Automatic Hydrologic Observing System - Satellite
AHOS-T	Automatic Hydrologic Observing System - Telephone
AIRMET	Airman's Meteorological advisory
AIRMET	AIRman's METeorological Information
AIV	Aviation Impact Variable
AK	Alaska
AL	Alabama
ALERT	Automated Local Evaluation in Real Time
ALF	Aloft
ALG	Along
ALGHNY	Allegheny
ALQDS	All Quadrants
ALSTG	Altimeter Setting
ALT	Altitude
ALTA	Alberta
ALTHO	Although
ALTM	Altimeter
ALUTN	Aleutian
AMD	amend
AMDAR	Automatic Meteorological Data And Reporting
AMDD	Amended
AMDG	Amending
AMDT	Amendment
AMIS	Automated Meteorological Information System
AMOS	Automated Meteorological Observing System

AMP	Amplify
AMPG	Amplifying
AMPLTD	Amplitude
AMS	Air mass
AMS	American Meteorology Society
AMSL	Above Mean Sea Level
AMT	Amount
ANBURS	Alphanumeric Backup Replacement System
ANLYS	Analysis
ANS	Answer
AOA	At or Above
AOB	At or Below
AOB	Aviation Operations Branch
AOML	Atlantic Oceanographic and Meteorological Laboratory (Miami, Florida) (ERL)
AOPA	Aircraft Owners and Pilots Association
AP	Airport
APCH	approach
APCHG	Approaching
APCHS	Approaches
API	Antecedent Precipitation Index
APLCN	Appalachian
APLCNS	Appalachians
APPR	Appear
APPRG	Appearing
APPRS	Appears
APR	April River Airport, April River, Papua New Guinea
APRNT	Apparent
APRNTLY	Apparently
APRX	Approximate
APRXLY	Approximately
APSG	After passing
APST	Aviation Products and Services Team
AQI	Air Quality Statement
AR	Arkansas
ARAM	Aviation, Range and Aerospace Meteorology
Arcus	Arc Cloud
ARFOR	Area Forecast
ARINC	Aeronautical Radio Incorporated
ARND	Around
ARPT	Airport
ARR	Arrive
ARSI	Atmospheric Research System, Inc.
ART	Automatic Radio Theodolite Master Control Unit As
ARTCC	Air Route Traffic Control Center
ARTYMET	Artillery Meteorological
AS	Altostratus
ASAP	As Soon As Possible (pronounced AY-sap)
ASAPTRAN	The software component of ASA
ASB	Aviation Support Branch
ASC	Ascent to

ASC	Aviation Services Coordinator
ASD	Aircraft Situation Display
ASH	Assistant Service Hydrologist
ASIST	Aviation Safety Investment Strategy Team
ASL	Above Sea Level
ASMD	As amended
ASOS	Automated Surface Observing System
ASSOCD	Associated
ASSOCN	Association
ATA	Area Transportation Authority
ATAD	Automated Telephone Answering Device
ATC	Air traffic control
ATCSCC	Air Traffic Control System Command Center
ATDTDCS	Automated Tone Dial Telephone Data Collection System
ATLC	Atlantic
ATMU	AIR TRANSPORTABLE MOBILE UNIT
ATTM	At This Time
ATTN	Attention
ATWIS	Advanced Transportation Weather Information System
AUG	August
AVARS	Aircraft Vertical Acceleration Reporting System
AVBL	available
AVG	Average Voltage Gain
AVN	Aviation Model
AWC	Aviation Weather Center
AWDS	Automated Weather Distribution System
AWHPS	Area Wide Hydrologic Prediction System
AWIPS	Advanced weather Interactive Processing System (NOAA)
AWN	Automated Weather Network
AWOS	Automated Weather Observation System
AWSS	Aviation Weather Sensor System
AWT	Awaiting Trial
AWT	Awaiting Test
AZ	Arizona
AZM	Azimuth
B	Blue
B-	Convective Inhibition
BA	Braking Action
BACLIN	Baroclinic
BAJA	Baja California
BAMS	Bulletin of the American Meteorological Society
BASE	Cloud base
BATROP	Barotropic
BC	British Columbia
BCFG	Fog Patches
BCH	Beach
BCKG	Backing
BCM	Become
BCMG	Becoming
BCMS	Becomes

BD	Blowing Dust
BDA	Bermuda Island
BDRY	Boundary
BECMG	Becoming
BFDK	Before Dark
BFR	Before
BGN	Begin
BGNG	Beginning
BGNS	Begins
BHND	Behind
BINOVC	Breaks in overcast
BKN	Broken
BL	Blowing (METAR descriptor)
BLD	Build
BLDG	Building
BLDS	Builds
BLDU	Blowing Dust (METAR Code)
BLDUP	Buildup
BLKHLS	Black Hills
BLKT	Blanket
BLKTG	Blanketing
BLKTS	Blankets
BLM	Bureau of Land Management of United States Department of the Interior
BLO	Below
BLSA	Blowing Sand (METAR Code)
BLSN	Blowing Snow (METAR Code)
BLW	Below
BLZD	Blizzard
BM	Benchmarking
BND	Bound
BNDRY	Boundary
BNDRYS	Boundaries
BNTH	Beneath
BPAA	Business Pilots Aircraft Association
BR	Mist
BRF	Brief
BRG	Branching
BRK	Break
BRKG	Breaking
BRKHIC	Breaks in higher clouds
BRKS	Breaks
BRKSHR	Berkshire
BRKSHRS	Berkshires
BRM	Barometer
BRN	Bulk Richardson Number
BRS	Branches
BT	Bathythermograph
BTL	Between layers
BTWN	Between
BWER	Bounded Weak-Echo Region

BYD	Beyond
C	Center
C	Celsius
CA	California
CAA	Cold Air Advection
CAAM	Computer Assisted Artillery Meteorology
CADAS	Centralized Automated Data Acquisition System
CAeM	Commission for Aeronautical Meteorology (WMO)
CAFTI	Committee on Analysis and Forecast Techniques Implementation
CANAM	Canadian/American
CAPE	Convective Available Potential Energy
CAPPI	CONSTANT ALTITUDE PPI
CAPS	Center for Analysis and Prediction of Storms
CARIB	Caribbean
CASC	Central Administrative Support Center
CASCDS	Cascades
CAT	Clear Air Turbulence
CAT	Category (e.g. CAT-5 cable)
CAVOK	conditions
CAVU	Ceiling And Visibility Unlimited
CAWIS	Committee for Automated Weather Information Systems
CB	Cumulonimbus
CBMAM	Cumulonimbus Mammatus
CBOFS	Chesapeake Bay Oceanographic Forecasting System
CBS	Cumulonimbi
CC	Cirrocumulus
CCA	Corrected meteorological message
CCL	Convective Condensation Level
CCLDS	Clear of Clouds
CCLKWS	Counter-Clockwise
CCSL	Cirrocumulus Standing Lenticular
CD	Climatological Data
CDA	Command and Data Acquisition
CDB	Computing Development Branch
CDC	Climate Diagnostics Center
CDFNT	Cold Front
CDFNTL	Cold frontal
CDFS	Cloud Depiction and Forecast System
CDM	Collaborative Decision Making
CEM	Civil Emergency Message
CFO	Communication Filing Officer
CFP	Cold Front Passage
CFS	Cubic Feet per Second
CG	Cloud-Ground Lightning
CGEN	Convective Sigmet Generation
CHC	Chance
CHCS	Chances
CHG	Change
CHGD	Changed
CHGG	Changing

CHGS	Changes
CHSPK	Chesapeake
CI	Cirrus
CIG	Ceiling
CIGS	Ceilings
CIN	Convective Inhibition
cIP	Current Icing Potential
CISK	Conditional Instability of the Second Kind
CLA	Clear type of ice formation
CLD	Cloud
CLDNS	Cloudiness
CLDS	Clouds
CLEGLFGLS	Great Lakes Marine Synopsis
CLEGLOCLE	Great Lakes Storm Outlook
CLEGLSCLE	Great Lakes Storm Summary
CLEICEFBO	Great Lakes Freeze-Up Outlook
CLEICEFBO	Great Lakes Ice Outlook for the Opening of Navigation
CLEICEIO	Great Lakes 5-Day Ice Outlook
CLKWS	Clockwise
CLR	Clear
CLRG	Clearing
CLRS	Clears
cm	Centimeter
CMFC	Coordinating METOC Forecast Center
CMPLX	Complex
CNCL	Cancel
CNCLD	Canceled
CNCLG	Cancelling
CNCLS	Cancels
CNDN	Canadian
CNFDC	Confidence
CNIF	Calibration Network Information Files
CNL	Cancel
CNTR	Center
CNTRD	Centered
CNTRL	Central
CNTRLN	Centerline
CNTRS	Centers
CNTY	County
CNTYS	Counties
CNVG	Converge
CNVGG	Converging
CNVGNC	Convergence
CNVTN	Convection
CNVTV	Convective
CNVTVLY	Convectively
CO	Colorado
COE	Creek Corps of Engineers
COM	Communications Society
COMET	Cooperative Program for Operational Meteorology, Education and Training

COMPAR	Compare
COMPARD	Compared
COMPARG	Comparing
COMPARS	Compares
COND	Conditions
CONS	Continuous
CONSHELF	Continental Shelf
CONT	Continue
CONTD	Continued
CONTDVD	Continental Divide
CONTG	Continuing
CONTLY	Continually
CONTRAILS	Condensation Trails
CONTS	Continues
CONUS	Continental United States (48 Contiguous States and DC)
COOR	Co-ordinate
COORD	Coordinate
COR	Corrected/Correction
COT	At the Coast
COV	Cover
CPBL	Capable
CPC	Climate Prediction Center (NWS Center)
CPHC	Central Pacific Hurricane Center
CR	Composite Reflectivity
CRC	Circle
CRCLC	Circulate
CRCLN	Circulation
CRNR	Corner
CRNRS	Corners
CRP	Critical Rainfall Probability
CRS	Course
CS	Combined Shear
CS	Cirrostratus
CSC	Combined Shear Contour
CSDR	Consider
CSDRBL	Considerable
CSI	Critical Success Index
CSI	Conditional Symmetric Instability
CST	Coast
CSTAR	Collaborative Science, Technology and Applied Research
CSTL	Coastal
CSW	Committee for Space Weather
CT	Connecticut
CTGY	Category
CTSKLS	Catskills
CTWFC	CINC Target Weather Forecast Center
CU	Cumulus
CUF	Cumuliform
CUFRA	Cumulus Fractus
CVR	Cover

CVRD	Covered
CVRG	Covering
CVRS	Covers
CW	Continuous Wave
CW	Cloud-Water Lightning
CWA	County Warning Area
CWA	Center Weather Advisory - CWSU
CWF	Coastal Marine Forecasts
CWF	Combat Weather Flight
CWS	Combat Weather Squadron
CWSU	Center Weather Service Unit
CWT	Combat Weather Team
Cyc	Cyclonic
CYCLGN	Cyclogenesis
D-MAWDS	Digital Marine Weather Dissemination System
DABRK	Daybreak
DALGT	Day light
DAMBRK	The Dam Break Forecasting Model
DAPM	The Data Acquisition Program Manager
DATACOL	The Software System that supports RFC gateway functions
DATANET	Hydrologic Data Network Analysis Software
DBL	Double
DBNET	Distributed Brokered Networking
DC	District of Columbia
DCP	Data Collection Platform
DCR	Decrease
DCRD	Decreased
DCRG	Decreasing
DCRGLY	Decreasingly
DCRS	Decreases
DCS	Data Collection System (NOAA Polar Orbiting Satellites)
DDS	Domestic Data Service
DDS	Data Distribution System
DE	DELAWARE
DEC	December
DEG	Degree
DEGS	Degrees
DelMarVa	Delaware-Maryland-Virginia
Dep	Depart
DES	Descend
DEV	Deviation
DFCLT	Difficult
DFCLTY	Difficulty
DFNT	Definite
DFNTLY	Definitely
DFRS	Differs
DFUS	Diffuse
DGNL	Diagonal
DGNLLY	Diagonally
DIF	Diffuse

DIFAX	Digital Facsimile
DIGG	Digging
DIR	Directory
DISC	Discontinue
DISCD	Discontinued
DISCG	Discontinuing
DISRE	Disregard
DISRED	Disregarded
DISREG	Disregarding
DIST	Distance
DIV	Divert
DKTS	Dakotas
DLA	Delay
dlAd	Delayed
DLT	Delete
DLTD	Deleted
DLTG	Deleting
DLY	Daily
DMCC	DOE Meteorological Coordinating Council
DMG	Damage
DMGD	Damaged
DMGG	Damaging
DMNT	Dominant
DMSH	Diminish
DMSHD	Diminished
DMSHG	Diminishing
DMSHS	Diminishes
DNDFTS	Downdrafts
DNR	Department of Natural Resources
DNS	Dense
DNSLP	Downslope
DNSTRM	Downstream
DNWND	Down wind
DOD	United States Department of Defense
DOH	Development and Operations Hydrologist
Dom	Domestic
DP	Deep
DPND	Deepened
DPNG	Deepening
DPNS	Deepens
DPR	Deeper
DPTH	Depth
DRFT	Drift
DRFTD	Drifted
DRFTG	Drifting
DRFTS	Drifts
DRG	During
DRZL	Drizzle
ds	Dust Storm
DSA	Special Tropical Disturbance Statement

DSCNT	Descent
DSF	Day-Second Feet
DSIPT	Dissipate
DSIPTD	Dissipated
DSIPTG	Dissipating
DSIPTN	Dissipation
DSIPTS	Dissipates
DSND	Descend
DSNDG	Descending
DSNDS	Descends
DSNT	Distant
DSTBLZ	Destabilize
DSTBLZD	Destabilized
DSTBLZG	Destabilizing
DSTBLZN	Destabilization
DSTBLZS	Destabilizes
DSTC	Distance
DTG	Date-Time Group
DTRT	Deteriorate
DTRTD	Deteriorated
DTRTG	Deteriorating
DTRTS	Deteriorates
DU	Dust
DUC	Dense Upper Cloud
DUR	Duration
DURG	During
DURN	Duration
DVLP	Develop
DVLPD	Developed
DVLPG	Developing
DVLPMT	Development
DVLPS	Develops
DVRG	Diverge
DVRGG	Diverging
DVRGNC	Divergence
DVRGS	Diverges
DVV	Downward Vertical Velocity
DWNDFTS	Downdrafts
DWOPER	Dynamic Wave Routing Model
DWPNT	Dewpoint
DWPNTS	Dewpoints
DWSW	Deployable Weather Satellite Workstation
DX	Duplex
DZ	Drizzle
E	East
EAA	Experiment Aircraft Association
EB	Eastbound
EBND	East bound
EC	Environment Canada
ECMWF	European Center for Medium-Range Weather Forecasting model

EFCT	Effect
EFF	Experimental Forecast Facility
EHI	Energy Helicity Index
EIF	Enhanced IFLOWS Format
EL	Equilibrium Level
ELEV	Elevator
ELNGT	Elongate
ELNGTD	Elongated
ELSW	Elsewhere
EMBD	Embedded in a layer
EMBDD	Embedded
EMC	Environmental Modeling Center
EMERG	Emergency
EMWIN	Emergency Managers Weather Information Network
ENCTR	Encounter
endg	ending
ENE	east-northeast
ENELY	East-northeasterly
ENERN	East-northeastern
ENEWD	East-northeastward
ENHNC	Enhance
ENHNCD	Enhanced
ENHNCG	Enhancing
ENHNCMNT	Enhancement
ENHNCS	Enhances
ENRT	En Route
ENSO	El Niño and Southern Oscilation
ENTR	Entire
EPD	Extended Forecast Discussion
EPRI	Electric Power Research Institute (US)
EPSCoR	Experimental Program for the Stimulation of Competitive Research
EPV	Equivalent Potential Vorticity
ER	Here
ERD	Excessive Rainfall Discussion
ERL	Environmental Research Laboratories (absorbed By OAR Or NOAA Research)
ERN	Eastern
ERY	Early
ERYR	Earlier
ESA	Electronic Systems Analyst
ESE	East-southeast
ESELY	East-southeasterly
ESERN	East-Southeastern
ESEWD	East-Southeastward
ESF	Flood Potential Outlook
ESNTL	Essential
ESP	Extended Streamflow Prediction
ESPINIT	ESP Initialization Program
ESS	Water Supply Outlook Product
EST	Estimate
ESTAB	Establish

ESTS	Estimates
ET	Echo Tops
ET	Electronic Technician
ETA	estimating arrival
ETA	Eta model
Eta	Greek letter, describes a constant height coordinate model system
ETC	Echo Tops Contour
ETC	Et Cetera
ETD	Estimated Time of Departure
ETIM	ELAPSED TIME
EUMETSAT	European Organization for the Exploitation of Meteorological Satellites
EV	every
EVAD	Extended Velocity
EVE	Evening
EWD	Eastward
Exc	Except
EXCLV	Exclusive
EXCLVLY	Exclusively
EXCP	Except
EXER	Exercise
exp	Expect
EXPC	Expect
EXPCD	Expected
EXPCG	Expecting
EXTD	Extend
EXTDD	Extended
EXTDG	Extending
EXTDS	Extends
EXTN	Extension
EXTRAP	Extrapolate
EXTRAPD	Extrapolated
EXTRM	Extreme
EXTRMLY	Extremely
EXTSV	Extensive
f	Degrees Fahrenheit
F scale	See Fujita Scale
FA	Area Forecast
FAA	Federal Aviation Administration
FAA/ARW	Federal Aviation Administration/Aviation Requirements - Weather Group
FAA/AWR	Federal Aviation Administration/Aviation Weather Research Division
FAH	Fahrenheit
Fam	Familiar
FAR	False Alarm Ratio
FAR	Federal Aviation Regulation
FAWS	Flight Advisory Weather Service
FAX	Facsimile Transmission
FC	Funnel Cloud
FCEXEC	A component of the NWSRFS FCST Program
FCMSSR	Federal Committee for Meteorological Services and Supporting Research
FCST	Forecast

FCSTD	Forecasted
FCSTG	Forecasting
FCSTR	Forecaster
FCSTS	Forecasts
FD	Winds and Temperatures Aloft Forecasts
FDR	Fire Danger Rating
FEB	February
FEMA	Federal Emergency Management Agency
FEW	Few
FFA	Flood Frequency Analyses
FFA	Flood
FFG	Flash Flood Guidance
FFS	Flash Flood Statement
FFW	Flash Flood Warning
FG	Foggia
FG	Fog Gun
FIAS	Flight Information Advisory Service
FIC	Flight Information Center
FIG	Figure
FILG	Filling
FIP	Forecast Icing Potential
FIR	Flight Information Region
FIRAV	First Available
FIS	Flight Information Service
FL	Florida
FLD	Field
FLG	Falling
FLG	Flashing
FLN	National Flood Summary
FLRY	Flurry
FLRYS	Flurries
FLS	River Flood Statement
FLT	Flight
FLUC	fluctuation
FLW	Follow
FLWG	Following
FM	From
FMT	Format
FNCTN	Function
FNT	Front
FNTGNS	Frontogenesis
FNTL	Frontal
FNTLYS	Frontolysis
FNTS	Fronts
FORNN	Forenoon
FOS	FAMILY OF SERVICES
FOUS	Forecast Output United States
FPM	Feet Per Minute
FPO	Flood Potential Outlook
FQT	Frequent

FQTLY	Frequently
FREQ	Frequency
FRI	Friday
FRM	Form
FRMG	Forming
FRMN	Formation
FROPA	Frontal Passage
FROSFC	Frontal Surface
FRQ	Frequent
FRST	Frost
FRWF	Forecast Wind Factor
FRZ	Freeze
FRZG	Freezing
FRZN	Frozen
FSL	Forecast Systems Laboratory (a NOAA ERL)
FSS	Flight Service Station
FST	First
FT	Terminal Forecast
FT	Feet
FTE	Full-Time Employee
FTHR	Further
FTP	File Transfer Protocol
FU	Smoke
FVRBL	Favorable
FVT	Forecast Verification Tool
FWD	Forward
FY	Fiscal Year
FYI	For Your Information
FZ	Freezing
FZDZ	Freezing Drizzle
FZFG	Freezing Fog
FZRA	Freezing Rain (METAR Code)
g	Gust
G	Green
G	Green time
G-Airmet	Graphical Airmet
GA	Georgia
GAI	Global Atmospherics Inc
gama	General Aviation Manufacturers Association's
GDS	GeoMet Data Services, Inc.
GEMPAK	General Environmental Meteorological Package
Gen	General Motors
GENLY	Generally
GEO	Geographic
GEOREF	Geographical reference
GF	Ground Fog
GFA	Graphical Area Forecast
GFDL	Geophysical Fluid Dynamics Laboratory (NOAA US)
GFS	Global Forecast System
GICG	Glaze Icing

GLFALSK	Gulf of Alaska
GLFCAL	Gulf of California
GLFMEX	Gulf of Mexico
GLFSTLAWR	Gulf of St. Lawrence
GMDSS	Global Maritime Distress and Safety System (IMO)
GND	Ground
GNDFG	Ground Fog
GOES	Geostationary Operational Environmental Satellite
GOES	Geostationary Orbiting Environmental Satellite
GOM	Global Ocean Model
GPS	Global Positioning System (ex-NAVSTAR)
GR	Hail
GRAD	Gradient
GRDL	Gradual
GRDLY	Gradually
GRID	Processed meteorological data in the form of grid point values
GRT	Great
GRTLKS	Great Lakes
GRTLY	Greatly
GRTR	Greater
GRTST	Greatest
GS	Small hail and snow pellets
GSA	U.S. General Services Administration
GSTS	Gusts
GSTY	Gusty
GTG	Graphical Turbulence Guidance
GUI	Graphical User Interface (goo-ey)
GV	Ground Visibility
HADS	Hydrometeorological Automated Data System
Haz	Hazard
HCVIS	High Clouds Visible
HDFRZ	Hard Freeze
HDG	Heading
HDRAIN	An Hourly Digital Rainfall Product of the WSR-88D
HDSVLY	Hudson Valley
HDWND	Head Wind
HEL	Helicopter
HGT	Height
HI	High
HIC	Hydrologist In Charge
HIC	Hydrometeorological Information Center
HIER	Higher
HIFOR	High Level Forecast
HIGH	High Core Threshold
HIGH	HIGHLAND
HJ	Sunrise to sunset
Hlf	Half
HLS	Hurricane Local Statement
HLSTO	Hailstones
HLTP	Hilltop

HLYR	Haze Layer Aloft
HMD	Hemispheric Map Discussion
HMT	Hydrometeorological Technicians
HN	Sunset to sunrise
HND	Hundred
HOL	Holiday
HP	High Precipitation
HPA	Hectapascal
HPC	Hydrometeorological Prediction Center
HPC	Weather Prediction Center
HPD	Hourly Precipitation Data
HR	Hour
HRL	The Hydrological Research Laboratory
HRS	Hours
HRZN	Horizon
HSA	Hydrologic Service Area
HSB	Hydrologic Systems Branch in the Office of Hydrology
HSD	Heavy Snow Discussion
HSF	High Seas Forecasts
HTC	The Hydrometeorological Training Council
HTG	Heating
HUD	Housing and Urban Development, U.S. Department of
HURCN	Hurricane
HUREP	Hurricane Report
HV	Have
Hvy	Heavy
HVYR	Heavier
HVYST	Heaviest
HWO	Severe Weather Potential Statement
HWVR	However
HWY	Highway
HYR	Higher
HZ	Haze (METAR Code)
Hz	cycles per second (hertz)
I	See inphase
IA	Iowa
IAO	In And Out
IATA	International Air Transport Association
IC	Ice Crystals
IC	In-Cloud Lightning
ICAO	International Civil Aviation Organization
ice	icing
Icg	Icing
ICGIC	Icing in Clouds
ICGIP	Icing in Precipitation
ID	Idaho
Id	IDentifier
IDS	International Data Service
IFFDP	International Flight Folder Documentation Program
IFLOWS	The Integrated Flood Observing and Warning System

IFR	Instrument Flight Rules
IIDA	Integrated Icing Diagnostic Algorithm
IL	Illinois
IMC	Instrument Meteorological Conditions
IMDT	Immediate
Imdtly	Immediately
IMPL	Impulse
IMPLS	Impulses
Impr	Improve
IMPT	Important
imt	immediate
INBD	Inbound
Inc	in cloud
INCL	Include
INCLD	Included
INCLG	Including
INCLS	Includes
INCR	Increase
INCRD	Increased
INCRG	Increasing
INCRGLY	Increasingly
INCRS	Increases
indc	indicate
INDCD	Indicated
INDCG	Indicating
INDCS	Indicates
INDEF	Indefinite
INFO	Information
INLD	Inland
INOP	Inoperative
INP	If Not Possible
INPR	in progress
INS	Inertial Navigation System
INSTBY	Instability
INSTF	Intensify
INSTL	Install
INTCNTL	Intercontinental
INTL	International
INTMD	Intermediate
INTMT	Intermittent
INTMTLY	Intermittently
INTR	Interior
INTRMTRGN	Intermountain Region
INTRP	Interrupt
INTs	intense
INTSFCN	Intensification
INTSFY	Intensify
INTSFYD	Intensified
INTSFYG	Intensifying
INTSFYS	Intensifies

INTST	Intensity
INTSTY	Intensity
INTVL	Interval
INU	Inertial Navigation Unit
INVOF	In vicinity of
INVRN	Inversion
IOS	Integrated Operational Services
IOVC	In Overcast
IP	Ice Pellets
IPV	Improve
Ipvg	Improving
IR	Infrared
ISA	International Standard Atmosphere
ISCS	International Satellite Communications System
ISOL	Isolate
Isold	Isolated
ITCZ	Intertropical Convergence Zone (of Seawater)
ITT	Information Technology Team
ITWS	Integrated Terminal Weather System
IWEDA	Integrated Weather Effects Decision Aid
IWRS	Improved Weather Reconnaissance System
J/KG	Joules per Kilogram
JAN	January
Jan	January
JCTN	Junction
JMA	Japanese Meteorological Agency
JTSTR	Jet Stream
JUL	July
JUN	June
JWIS	Joint Weather Impacts System
KBDI	Keetch-Byram Drought Index
KCFB	Kansas City Federal Building
KFRST	Killing Frost
kg	Kilogram
KLYR	Smoke Layer Aloft
km	Kilometers to Miles
KMARD	Kansas Modernization and Restructuring Demonstration
KMH	Kilometers per hour
KOCTY	Smoke Over City
kPa	kiloPascal (pressure above ambient (100 kPa = 1 atmosphere excess))
KS	Kansas
KT	Knots
KU	University of Kansas
Kw	Kilowatt (one thousand watts) (measurement)
KY	Kentucky
LA	Louisiana
LABRDR	Labrador
LAM	Logical acknowledgment
LAN	Local Area Network
LAN	Inland

LAT	Latitude
LCL	Local
LCLY	Locally
LCTD	Located
LCTMP	Little change in temperature
LCTN	Location
Ldads	Local Data Acquisition and Dissemination System
LDG	Landing (aviation)
LDM	Local Data Manager
LEN	Length
LEVEL	Level
LEWP	Line Echo Wave Pattern
LFM	Limited Fine Mesh
LFTG	Lifting
LGRNG	Long Range
LGT	Light
LGTD	Lighted
LGTR	Lighter
LGWV	Long Wave
LI	Lifted Index
LIFR	Low Instrument Flight Rules
LINUX	UNIX-like computer operating system
LIS	Lifted indices
LIVV	Lifted Index Vertical Velocity
LK	Lake
LKLY	Likely
LKS	Lakes
LLJ	Low Level Jet stream
LLP	Lightning Location and Protection, Inc
LLWAS	Low Level Wind Shear Alert System
LLWS	Low Level Wind Shear
LMT	Local Mean Time
Lmtd	Limited
Lmtg	Limiting
LMTS	Limits
ln	Line Network
LN	Line
LO	Low
LO	Lower Order
LOC	Local
LONG	Longitude
LONGL	Longitudinal
LOT	Local Office Team
LP	Low Precipitation
LPATS	Lightning Position And Tracking System
LRG	Large
LRGLY	Largely
LRGR	Larger
LRGST	Largest
LSQ	Line Squall

LSR	Local Storm Report
LST	Local Standard Time
LTD	Limited
LTG	Lightning
LTGCC	Lightning Cloud-to-Cloud
LTGCCCG	Lightning cloud-to-cloud cloud-to-ground
LTGCG	Lightning Cloud-to-Ground
LTGCW	Lightning Cloud-to-Water
Ltgic	Lightning in Cloud
LTL	Little
LTLCG	Little Change
LTR	Later
LTST	Latest
LV	Leaving
LVL	Level
LVLS	Levels
LWR	Lower
LWRD	Lowered
LWRG	Lowering
LYR	Layer
Lyrd	Layered
Lyrs	Layers
m	Mach number
M	Mesocyclone
m2/s2	Meters squared per second squared
MA	Massachusetts
MAN	Manitoba
MAP	Mean Areal Precipitation
MAR	March
MARD	Modernization and Restructuring Demonstration
MAREP	Marine Reporting Program
MAX	Maximum
MAY	Maysville
MAY	May Department Stores Company
MAY	Mayaro
MB	Millibar(s)
MBRFC	Missouri Basin River Forecast Center
MC	Meteorological Codes
MCC	Mesoscale Convective Complex
MCD	Mesoscale Discussion
MCDW	Monthly Climatic Data of the World
MCIDAS	Man Computer Interactive Data Acquisition System
McIDAS	Man-computer Interactive Data Access System
MCS	Mesoscale Convective System
MCW	Modulated Continuous Wave
MD	Maryland
MDCRS	Meteorological Data Communications and Reporting System
MDFY	Modify
MDFYD	Modified
MDFYG	Modifying

MDL	Model
Mdls	Models
MDS	Minimum Discernible Signal
MDS	Meteorological Distribution System
MDT	Moderate
MDTLY	Moderately
ME	Maine
MED	Medium
MEGG	Merging
Meso	Mesoscale
Meso	Mesoscale Convective Unit
MET	Meteorology
MET	Meteorological Teams
METAR	Meteorological Terminal Aviation Routine Weather Report
METAR	Meteorological Aviation Report
METMF	Meteorological Mobile Facility
METMFR	Meteorological Mobile Facility Replacement
METOC	Meteorological and Oceanographic
METRO	Metropolitan
MEX	Mexico
MHKVLY	Mohawk Valley
MI	Michigan
MIC	Meteorologist-In-Charge
Micro-ART	Microcomputer Automatic Radiotheodolite Master Control Unit
MID	Middle
Midn	Midnight
MIFG	Shallow Fog (METAR Code)
MIL	Military
MIN	Minimum
MISG	Missing
MLCAPE	Mean Layer CAPE
MLLI	Mean Layer Lifted Index
MLLW	Mean Lower Low Water (nautical Charts)
MLOS	Microwave Line-Of-Site
MLTLVL	Melting Level
MLW	Mean Low Water (nautical Charts)
MMS	METEOROLOGICAL MEASURING SYSTEM
MMS-P	Meteorological Measuring System-Profiler
MN	Minnesota
MNLND	Mainland
MNLY	Mainly
MNM	Minimum
MNT	Monitor
MO	Missouri
MOA	Memorandum Of Agreement
MOD	moderate dysplasia
MOGR	Moderate, or Greater
MON	Monday
MOREnet	Missouri Research & Education Network
MOS	Model Output Statistics applications

MOS	Model Output Statistics
MOV	Move
MOVD	Moved
MOVG	Moving
MOVMT	Movement
MOVS	Moves
MPC	Marine Prediction Center
MPH	Miles Per Hour
mPL	Max Parcel Level
Mrf	Medium-Range Forecast Model
MRGL	Marginal
MRGLLY	Marginally
MRNG	Morning
MRTM	Maritime
MS	Minus
MS	Mississippi
MSG	Message
MSL	Mean Sea Level
MST	Mosta
MST	Meteorological Support Teams
MSTLY	Mostly
Mstr	Moisture
MT	Montana
MT	Mountain
MTN	Mountain
MTNS	Mountains
MTU	Metric units
MTW	Mountain Waves
MUCAPE	Most Unstable CAPE
MULI	Most Unstable Lifted Index
MULT	Multiple
MULTILVL	Multi-level
MVFR	Marginal Visual Flight Rules
MWAVE	Mountain Wave Algorithm
MWO	Meteorological Watch Office
Mx	Mixed Type of Ice Formation
MXD	Mixed
N	North
N-AWIPS	National Centers-AWIPS
N-TFS	New Tactical Forecast System
NAB	Not Above
NACA	National Advisory Committee on Aeronautics
NADIN	National Airspace Data Interchange Network
NAMIS	NATO Automated Meteorological Information System
NAOS	North American Atmospheric Observing System
NAP	NCEP Advisory Panel
NAS	National Airspace System
NASA	National Aeronautics and Space Administration (US)
NAT	North Atlantic
NATA	National Air Transportation Assoc.

NATL	National
NAV	Navigator
NAVMETOCCOM	Naval Meteorology and Oceanography Command
NAVPACMETOCCEN	Naval Pacific Meteorology and Oceanography Center, Pearl Harbor, Hawaii
Navtex	Navigational Telex
NAWAU	National Aviation Weather Advisory Unit
NAWPC	National Aviation Weather Program Council
NB	New Brunswick
NB	NorthBound
NBAA	National Business Aviation Association, Inc.
Nbfr	Not Before
NBND	Northbound
NBRHD	Neighborhood
NC	National Center
NC	North Carolina
NC	No Change
NCAR	National Center for Atmospheric Research (US)
NCAR/RAP	National Center for Atmospheric Research/Research Applications Program
NCCF	NOAA Central Computer Facility
NCDB	NCEP Computer Development Branch
NCDC	National Climatic Data Center
NCEP	National Centers For Environmental Prediction (form. NMC; NWS Center)
NCO	NCEP Central Operations
Ncwd	National Convective Weather Diagnostic
NCWF	National Convective Weather Forecast
NCWX	No Change in Weather
ND	North Dakota
NE	Nebraska
NE	North-East
NEB	Nebraska
NEC	Necessary
Neg	NEGative
NEGLY	Negatively
NELY	Northeasterly
NERN	Northeastern
NESDIS	National Environmental Satellite, Data, and Information Service
NESDIS/SAB	National Environmental Satellite, Data and Information Service/Satellite Analysis Branch
NEW ENG	New England
NEWD	Northeastward
NEXRAD	Next Generation Weather Radar
NEXRAD	NEXt generation of weather RADar
NEXRAD	Next-Generation Weather Radar (NWS)
NFDRS	National Fire Danger Rating System
NFLD	Newfoundland
NGM	Nested Grid Model
NGT	Night
NH	New Hampshire
NHC	United States National Hurricane Center
NIDS	NEXRAD Information Distribution Service
NIDS	NEXRAD Information Dissemination Service

Nil	None
NJ	New Jersey
NL	No layers
NLDN	National Lightning Detection Network
NLT	Not Later Than
NLY	Northerly
NM	New Mexico
NM	Nautical Mile
NMBR	Number
NMBRS	Numbers
NMC	National Meteorological Center (US)
Nml	Normal
NMOC	National Meteorological Operations Centre
Nmrs	Numerous
NNE	North-North-East
NNELY	North-northeasterly
NNERN	North-Northeastern
NNEWD	North-Northeastward
NNICE	Neural Network for Icing
NNNN	End of Message
NNW	North-Northwest
NNWLY	North-northwesterly
NNWRN	North-Northwestern
NNWWD	North-Northwestward
NOAA	National Oceanic and Atmospheric Administration (US)
NOHRSC	The National Operational Hydrologic Remote Sensing Center
NOPAC	Northern Pacific
NOSIG	No Significant Change
NOTAM	Notice to Airmen
NOV	November
NOW	Short Term Forecast
Nowcast	Short Term Forecast
NOWS	NVG Operations Weather Software
NPRA	National Performance Results Act
NPRS	Nonpersistent
NPSU	National Public Service Unit
NR	Number
NRCS	Natural Resources Conservation Service
NRLY	Nearly
NRN	Northern
Nrw	Narrow
NS	Nova Scotia
NS	Nimbostratus
NSC	Nil Significant Cloud
NSF	National Sanitation Foundation
NSH	Nearshore Lake Forecast
NSSFC	National Severe Storms Forecast Center
NSSL	National Severe Storms Laboratory
NSW	Nil Significant Weather
NTFY	Notify

NTFYD	Notified
NTSB	US National Transportation Safety Board
NV	Nevada
NVA	Negative Vorticity Advection
NW	North West
NWB	North-westbound
Nwd	Northward
NWFO	National Weather Service Forecast Office
NWLY	Northwesterly
NWP	Numerical Weather Predication
NWP	Numerical Weather Prediction
NWR	NOAA Weather Radio
NWRN	Northwestern
NWS	National Weather Service (formerly U.S. Weather Bureau)
NWSEO	National Weather Service Employees Organization
NWSH	National Weather Service Headquarters
NWSO	National Weather Service Office
NWSRFS V5.0	National Weather Service River Forecast Model Version 5
NWSTC	National Weather Service Training Center
NWSTG	National Weather Service Telecommunications Gateway
NWWS	NOAA Weather Wire System
NXT	Next
NY	New York
OAC	Oceanic Area Control Center
OAT	Outside Air Temperature
OBS	Observe
OBSC	Obscure
OBSCD	Obscured
OBSCG	Obscuring
Obst	Obstacle
OCFNT	Occluded Front
Ocld	Occlude
Ocldd	Occluded
Ocldg	Occluding
Oclds	Occludes
OCLN	Occlusion
OCNL	Occasional
OCNLY	Occasionally
OCR	Occurrence
OCRD	Occurred
OCRG	Occurring
OCRS	Occurs
OCS	Oklahoma Climatological Survey
OCT	October
OCWWS	Office of Climate, Water and Weather Services
OFC	Office
Ofcm	Office of the Federal Coordinator for Meteorological Services and Supporting Research
OFF	Offshore Forecast
OFP	Occluded Frontal Passage
OFSHR	Offshore

OH	Ohio
OHD	Overhead
OHP	One-Hour Rainfall Rate
OK	Oklahoma
OM	Office of Meteorology
OML	Operations Manual Letter
Omtns	Over Mountains
ONSHR	Onshore
OPA	Opaque, white type of ice formation
OPMET	Operational Meteorological
OPN	Open
OPR	Operator
Ops	Operations
OPS-II	Operational Weather Squadron Production System II
OR	Oregon
ORGPHC	Orographic
OSD	Office of Systems Development
OSO	Office of Systems Operations
OSV	Ocean Station Vessel
OTLK	Outlook
Otp	On Top
OTR	Other
OTRW	Otherwise
OTW	Owning The Weather
OU	University of Oklahoma
Oubd	Outbound
OUTFLO	Outflow
OVC	Overcast (METAR Code)
OVNGT	Overnight
OVR	Over
OVRN	Overrun
Ovrng	Overrunning
OVTK	Overtake
Ovtkg	Overtaking
Ovtks	Overtakes
OWS	Operational Weather Squadron
PA	Pennsylvania
PAC	Pacific Region
PARL	Parallel
PBL	Planetary Boundary Layer
PC	Personal computer (host)
Pc-gridds	Pc-Gridded Interactive Display and Diagnostic System
PCD	Proceed
PCPN	Precipitation
PD	Period
Pdmt	Predominant
PDS	Periods
PDT	Product Development Team
PE	Ice pellets
Pen	Peninsula

PERM	Permanent
PFD	QPF Discussion
PGTSND	Puget Sound
PHYS	Physical
PIBAL	pilot-balloon observation
PIBALS	Pilot Balloon Reports
PIREP	Pilot (weather) Report
PIREP	Pilot Report
PIXEL	Picture Element
PL	Ice Pellets or Sleet
PLNS	Plains
PLS	Please
Plto	Plateau
PLVL	Present Level
PM	post meridian
PMD	Prognostic Discussion
PNHDL	Panhandle
PNS	Public Information Statement
PO	Dust devils
POD	Probability Of Detection
PoP	Precipitation Probability
POS	Positive
POSLY	Positively
POSS	Possible
PPI	Plane Position Indicator
PPINE	Plan Position Indicates No Echoes
PPSN	Present Position
PQPF	probabilistic quantitative precipitation forecast
Prbl	Probable
Prblty	Probability
Prbly	Probably
PRC	Planning and Research Corporation
PRECD	Precede
PRECDD	Preceded
PRECDG	Preceding
PRECDS	Precedes
PRES	Pressure
PRESFR	Pressure Falling Rapidly
PRESRR	Pressure Rising Rapidly
PRF	Pulse Repetition Frequency
PRI	Primary
PRIM	Primary
Prin	Principal
PRIND	Present indications are
Prjmp	Pressure Jump
prob	probability
PROC	Procedure
Prod	Produce
Prodg	Producing
Prog	Forecast

PROGD	Forecasted
Progs	Forecasts
PRSNT	Present
PRSNTLY	Presently
PRST	Persist
PRSTNC	Persistence
PRSTNT	Persistent
PRSTS	Persists
PRT	Pulse Repetition Time
Prvd	Provide
Prvdd	Provided
Prvdg	Providing
Prvds	Provides
PS	Plus
PSBL	Possible
PSBLTY	Possibility
PSBLY	Possibly
PSCZ	Puget Sound Convergence Zone
Psg	Passing
Psg	Passage
PSH	Preliminary Tropical Storm Report
PSN	Position
PSND	Positioned
Ptchy	Patchy
PTLY	Partly
Ptnl	Potential
Ptnly	Potentially
Ptns	Portions
PUGET	Puget Sound
PUP	Principal User Processor (NEXRAD)
PUP	Principle User Processor
PVA	Positive Vorticity Advection
PVL	Prevail
Pvld	Prevailed
Pvlg	Prevailing
Pvls	Prevails
Pvlt	Prevalent
PW	Precipitable Water
PWO	Public Severe Weather Outlook
PWR	Power
PWS	Precipitable Waters
PY	Spray
Q	Quadrature
QBI	Compulsory IFR flight
QFE	Atmospheric Pressure At Aerodrome Elevation
QG	An abbreviation for quasigeostrophic
QN	Question
QPF	Quantitative Precipitation Forecast
Qpferd	Nmc Excessive Rainfall Discussion
Qpfhsd	Ncep Heavy Snow Discussion

Qpfpfd	Ncep Precipitation Forecast Discussion
Qpfspd	Nmc Special Precipitation Discussion
QSTNRY	Quasistationary
QTP	Quality Through Partnership
Quad	Quadrant
QUE	Quebec
R	Right
R	Red
R	Reduction
R	Required
RA	Rain
RADAT	RADiosonde Observation Data
RAFC	Regional Area Forecast Center
RAFS	Regional Analysis and Forecasting System
RAG	Ragged
RAM	Regional Area Meteorologist
RAMSDIS	RAMM Advanced Meteorological Satellite Demonstration and Interpretation System
RAOB	Radiosonde Observation
RAOBS	Radiosonde Observations
RAWS	Remote Automatic Weather Station
RCH	Reach
Rchd	Reached
Rchg	Reaching
Rchs	Reaches
RCKYS	Rockies
RCM	Radar Coded Message
RCMD	Recommend
RCMDD	Recommended
RCMDG	Recommending
RCMDS	Recommends
RCRD	Record
RCRDS	Records
Rcs	Reflectivity Cross Section
RCV	Receive
RCVD	Received
RCVG	Receiving
RCVS	Receives
RDA	Radar Data Acquisition
Rdc	Reduce
RDGG	Ridging
RDR	Radar
Rdvlp	Redevelop
Rdvlpg	Redeveloping
Rdvlpmt	Redevelopment
RE	Recent
RE	Regard
Rec	Recreation Report
RECON	Reconnaissance
REP	Report
REPL	Replace

Repld	Replaced
Replg	Replacing
Repls	Replaces
REQ	Request
REQS	Requests
REQSTD	Requested
RES	Reserve
RESP	Response
RESTR	Restrict
RF	Radio Frequency
RFC	River Forecast Center
RFD	Rear Flank Downdraft
RFI	Radio Frequency Interference
RFP	Request For Proposal
RGD	Ragged
RGL	Regional Model
RGLR	Regular
RGN	Region
Rgns	Regions
RGT	Right
RH	Relative Humidity
RHI	Range-Height Indicator
RHINO	RHI not operative
RI	Rhode Island
RIOGD	Rio Grande
RL	Report Leaving
Rlbl	Reliable
RLTV	Relative
RLTVLY	Relatively
RMK	Remark
Rmn	Remain
Rmnd	Remained
Rmndr	Remainder
RMNG	Remaining
Rmns	Remains
RMTN	Regional Meteorological Telecommunications Network
Rnfl	Rainfall
ROB	Radar Coded Observation
ROBEX	Regional OPMET bulletin exchange
ROC	Rate of Climb
ROD	Rate Of Descent
Rofor	Route Forecast
ROML	Regional Operations Manual Letter
ROSA	Remote Observing System Automation
ROT	Rotate
ROTD	Rotated
Rotg	Rotating
Rots	Rotates
RPD	Rapid
RPDLY	Rapidly

RPG	Radar Product Generator
RPLC	Replace
Rplcd	Replaced
Rplcg	Replacing
Rplcs	Replaces
RPRT	Report
Rprtd	Reported
Rprtg	Reporting
Rprts	Reports
RPT	Repeat
RPTG	Repeating
RPTS	Repeats
Rqr	Require
Rqrd	Required
Rqrg	Requiring
Rqrs	Requires
Rr	Report Reaching
RS	Receiver station
RSG	Rising
Rsis	Rs Information Services, Inc.
RSMC	Regional/Specialized Meteorological Centers
RSN	Reason
RSNG	Reasoning
RSNS	Reasons
RSTR	Restrict
Rstrd	Restricted
Rstrg	Restricting
Rstrs	Restricts
RTA	Remote to AFOS
RTD	Delayed
RTE	Route
RTN	Return
RTRN	Return
RTRND	Returned
RTRNG	Returning
RTRNS	Returns
RTVS	Real Time Verification System
RUC	Rapid Update Cycle
Ruf	Rough
Rufly	Roughly
RVA	River Summary
RVF	River Forecast
RVI	River Ice Statement
RVR	River Recreation Statement
RVR	Runway Visual Range
RVS	River Statement
RVS	Revise
RVSD	Revised
RVSG	Revising
RVSS	Revises

RW	Rain Shower
RWY	Runway
S	South
sa	Sand
sa	Surface observation
SACSMA	Sacramento Soil Moisture Accounting Model
SAMEX	Storm and Mesoscale Ensemble Experiment
sao	Surface observation
Saos	Surface Observations
SAP	As soon as possible
SARPS	Standards and Recommended Practices
SASK	Saskatchewan
SAT	Saturday
SATFY	Satisfactory
SAW	Preliminary Notification of Forthcoming Watch
SAWRS	Supplementary Aviation Weather Reporting Station
SB	Southbound
SBCAPE	CAPE calculated using a Surface based parcel
SBLI	Lifted Index calculated using surfaced based parcel
SBND	South bound
Sbsd	Subside
Sbsdd	Subsided
Sbsdnc	Subsidence
Sbsds	Subsides
SC	Stratocumulus (cloud formation)
SC	South Carolina
SCA	Small Craft Advisory
SCC	Tropical Storm Summary
SCND	Second
SCNDRY	SECONDARY
SCS	Spectrum Width Cross Section
scsl	Standing lenticular stratocumulus
SCT	Scattered
sctd	Scattered
SCTR	Sector
SD	South Dakota
SD	Storm Data
SDF	Second-Day Feet
SDM	Senior Duty Meteorologist
SDM	Station Duty Manual
SE	Southeast
seb	South-eastbound
SEC	Second
SEL	Severe Thunderstorm Watch, Tornado Watch
SELS	SEvere Local Storms Unit
SELY	Southeasterly
SEP	September
SEPN	Separation
SEQ	Sequence
SERN	Southeastern

Sev	Severe
SEWD	Southeastward
SFC	Surface
SFD	STATE FORECAST DISCUSSION
SFERICS	Atmospherics
SFP	State Forecast Product
SG	Snow Grains (weather reports)
SGFNT	Significant
SGFNTLY	Significantly
SH	Showers
sharp	Skew-T Hodograph Analysis and Research Program
SHARS	Subtle Heavy Rainfall Signature
SHEF	Standard Hydrologic Exchange Format
SHEFPARS	A software decoder for SHEF Data
SHFT	Shift
SHFTD	Shifted
SHFTG	Shifting
SHFTS	Shifts
SHLD	SHieLD
SHLW	Shallow
SHRT	Short
SHRTLY	Shortly
SHRTWV	Shortwave
SHRTWVS	Shortwaves
SHSN	Snow Showers (METAR Code)
shud	should
SHWR	Shower
Shwrs	Showers
SIERNEV	Sierra Nevada
SIG	Signature
SIGMET	Significant Meteorological Advisory
Sigmet	Significant Meteorlogical Information
SIGWX	Significant Weather
SIMUL	Simultaneous
SKC	Sky Clear
SKED	Schedule
SLD	Solid
SLD	Supercooled Large Drops
SLGT	Slight
Slgtly	Slightly
SLO	Slow
SLOLY	Slowly
slor	Slower
SLP	Slope
slpg	Sloping
SLS	Watch Redefining Statement
slt	Sleet
SLW	Slow
Sly	Southerly
SM	Statute Mile

sma	Soil Moisture Accounting Model
smg	Space Flight Meteorology Group
SMK	Smoke
SML	Small
Smlr	Smaller
SMOOS	Shipboard Meteorological and Oceanographic Observing Sensor
SMPDBK	The Simplified Dam Break Model
SMRY	Summary
SMS	Synchronous Meteorological Satellite
SMTH	Smooth
Smthr	Smoother
Smthst	Smoothest
Smtm	Sometime
SMW	Special Marine Warning
SMWHT	Somewhat
SN	Snow
SNBNK	Snow bank
SND	Sanderson
SNFLK	Snow flake
SNGL	Single
SNOINCR	Snow increase
SNOINCRG	Snow increasing
SNOTEL	Snow Telemetry
SNR	Signal-to-Noise Ratio
SNST	Sunset
SNW	Snow
SNWFL	Snowfall
SO	Southern Oscillation
SOO	Scientific Operations Officer
SOO	Scientific and Operations Officer
SP	Snow Pellets
SPA	Subtropical Cyclone Public Advisory
SPC	Storm Prediction Center
SPCLY	Especially
SPD	Speed
SPD	speed of pupillary dilation
spds	Speeds
SPECI	Aviation selected special weather report
Special	Special Meteorological Report
SPENES	Satellite precipitation estimate statement
SPF	Probability of Tropical Cyclone Conditions
SPKL	Sprinkle
SPKLS	Sprinkles
SPLNS	Southern Plains
Spot	Spot Wind
SPRD	Spread
SPRDG	Spreading
SPRDS	Spreads
Sprl	Spiral
SPS	Special (Weather) Statement

SQ	Squall
SQAL	Squall
SQLN	Squall Line
Sqsn	Snow Squalls
SR	Sunrise
SRH	Storm-relative Helicity
SRM	Storm Relative Mean Radial Velocity Map
srn	Southern
SRND	Surround
SRNDD	Surrounded
SRNDG	Surrounding
SRNDS	Surrounds
SRR	Storm Relative Mean Radial Velocity Region
SRRS	Systems Record Retention System
SRY	Secondary
SS	Sandstorm
SS	Sunset
SSE	South-Southeast
Ssely	South-Southeasterly
SSERN	South-Southeastern
SSEWD	South-Southeastward
Sshp	Site Specific Hydrologic Prediction System
SST	Sea surface temperature
Ssw	South Southwest
Sswly	South-Southwesterly
SSWRN	South-Southwestern
SSWWD	South-Southwestward
ST	Stratus
STAGN	Stagnation
STBL	Stable
STBLTY	Stability
STD	Standard
STDY	Steady
STF	Stratiform
STFR	Stratus Fractus
STFRM	Stratiform
stg	Strong
STGLY	Strongly
STGR	Stronger
STGST	Strongest
STI	Storm Tracking Information
stlt	Satellite
stm	Storm
stms	Storms
STN	Station
STNR	Stationary
STNRY	Stationary
STNS	Stations
STP	Storm Total Precipitation
STWDSR	Surface Transportation Weather Decision Support Requirements

SUB	Substitute
SUBTRPCL	Subtropical
Suf	Sufficient
SUFLY	Sufficiently
SUG	Suggest
SUGG	Suggesting
sugs	Suggests
Sun	Sunday
Sunya	State University of New York, Albany
SUP	Supply
SUPG	Supplying
SUPR	Superior
Sups	Supplies
SUPSD	Supersede
Supsdg	Superseding
Supsds	Supersedes
svg	Serving
svr	Severe
SVRL	Several
SW	South West
SWA	Severe Weather Analysis
SWAFS	Space Weather Analysis and Forecasting System
Swb	South-Westbound
SWD	Southward
SWE	Snow Water Equivalent
SWEAT Index	Severe WEAther Threat Index
SWI	Showalter Index
SWLG	Swelling
SWLY	Southwesterly
SWO	Staff Weather Officers
SWODY1	Day 1 Convective Outlook
SWODY2	Day 2 Convective Outlook
SWOMCD	SELS Mesoscale Discussion
SWP	Severe Weather Probability
SWPC	Space Weather Prediction Center
SWR	State Weather Roundup
SWRN	Southwestern
SWS	Severe Weather Statement
swwd	Southwestward
Sx	Stability Index
SXN	Section
Sxns	Sections
Synop	Synoptic
Syns	Synopsis
SYS	System
T	Temperature
t	Thunder
T	Thunderstorm (weather reports)
T. D.	Tropical Depression
T.S.	Tropical Storm

TACMET-MOD	Tactical Meteorological Observing System Modification
TACWX	Tactical weather
TAF	Terminal Aerodrome Forecast
TAFB	Tropical Analysis and Forecast Branch
TAMU	Tropical Aviation Meteorological Unit
TAP	Transition Aviation Project
TAS	True Airspeed
TAWS	Tactical Acquisition Weather Software
TC	Tropical Cyclone
tce	Tropical Cyclone Position Estimate
TCM	Tropical Cyclone Forecasts/Advisory
TCNTL	Transcontinental
tcp	Public Tropical Cyclone Advisory
TCU	tropical cyclone update
TCU	Towering Cumulus
tda	Today
TDL	Techniques Development Laboratory
tdo	Tornado
TDU	Techniques Development Unit
TDWR	Terminal Doppler Weather Radar
TELCON	Telephone Conversation
TEMP	Temperature
tempo	Temporary
TEN	Theta-e Index
TEND	Trend forecast
TF	Terminal Forecast
TFS	Tactical Forecast System
tfu	Theater Forecast Unit
thd	Thunderhead
THDR	Thunder
THK	Thick
THKNG	Thickening
THKNS	Thickness
THKR	Thicker
THKST	Thickest
THN	Thin
Thng	Thinning
Thnr	Thinner
Thnst	Thinnest
THP	Three-Hour Rainfall Rate
THR	Threshold
THRFTR	Thereafter
THRU	Through
THRUT	Throughout
THSD	Thousand
THTN	Threaten
Thtnd	Threatened
Thtng	Threatening
Thtns	Threatens
THU	Thursday

Til	Until
TIP	Until past
TKE	Turbulent Kinetic Energy
TL	Till
TMPRY	Temporary
TMPRYLY	Temporarily
TMW	Tomorrow
TN	Tennessee
TNDCY	Tendency
Tndcys	Tendencies
TNGT	Tonight
TNTV	Tentative
TNTVLY	Tentatively
TOFS	Tactical Observing & Forecasting System
TOP	Cloud Top
TOPS	Tops
TOR	Tornado Warning
TOVC	Top of Overcast
TPC	Tropical Prediction Center
tpg	Topping
tr	Track
TRBL	Trouble
TRIB	Tributary
TRKG	Tracking Corporation (OTC Bulletin Board [OTCBB])
TRML	Terminal
TRMM	Tropical Rainfall Measuring Mission (US-Japan)
Trmt	Terminate
Trmtd	Terminated
Trmtg	Terminating
Trmts	Terminates
TRNSP	Transport
Trnspg	Transporting
TROF	Trough
TROFS	Troughs
trop	Tropopause
Trpcd	Tropical Continental
TRPCL	Tropical
TRRN	Terrain
trsn	Transition
trw	Thunderstorm
TS	Thunderstorm without precipitation
TSB	Technical Support Branch
TSFR	Transfer
TSFRD	Transferred
TSFRG	Transferring
TSFRS	Transfers
TSHWR	Thundershower
Tshwrs	Thundershowers
TSIP	Thundersleet
TSNT	Transient

TSQLS	Thundersqualls
tsra	Thunderstorm with rain
Tssn	Thundersnow
TSTM	Thunderstorm
TSTMS	Thunderstorms
TT	Total Totals
TT	Teletype
TUE	Tuesday
TURB	Turbulence
TURBC	Turbulence
TURBT	Turbulent
TVS	Tornado Vortex Signature
Twds	Towards
TWEB	Transcribed Weather Broadcast
TWEB	Transcribed Weather En route Broadcast
TWI	Twilight
TWIP	Terminal Weather Information for Pilots
TWO	Tropical Weather Outlook
TWR	Tactical Weather Radar
TWRG	Towering
TWS	Tropical Weather Summary
TX	TEXAS
typ	Type of Aircraft
TYPH	Typhoon
U/S	Unserviceable
UAB	Until Advised By
UCAR	University Corporation for Atmospheric Research
UCP	Unit Control Position
UDDF	Up and Down Drafts
UFN	Until Further Notice
UIR	Upper Flight Information Region
Ukmet	United Kingdom Meteorological Agency
UKMETO	United Kingdom Meteorological Office
ULJ	Upper-Level Jet
UN	Unable
una	Unable
UNAVBL	Unavailable
UNEC	UnNECessary
UNKN	Unknown
UNL	Unlimited
UNREL	Unreliable
UNRELBL	Unreliable
UNRSTD	Unrestricted
UNSATFY	Unsatisfactory
UNSBL	Unseasonable
UNSTBL	Unstable
UNSTDY	Unsteady
UNSTL	Unsettle
UNSTLD	Unsettled
UNUSBL	Unusable

UPDFTS	Updrafts
UPR	Upper
UPS	Uninterruptible Power Supply
UPS	United Parcel Service, Inc.
UPSLP	Upslope
UPSTRM	Upstream
URG	Urgent
USACE	Unites States Army Corps of Engineers
USAF	United States Air Force
Usbl	Usable
USBR	US Bureau of Reclamation
usfs	U.S. Forest Service
USGS	United States Geological Survey (DOI)
USMC	United States Marine Corporation
USWB	United States Weather Bureau
USWRP	United States Weather Research Program
UT	Utah
UTC	Coordinated Universal Time
UV	Ultraviolet (Light)
UVM	Upward Vertical Motion
UVV	Upward Vertical Velocity
Uvvs	Upward Vertical Velocities
UWNDS	Upper Winds
V	Velocity
VA	Volcanic Ash
VA	Virginia Ash
VAAC	Volcanic Ash Advisory Centers
VAD	Velocity-Azimuth Display
VAL	Valley
varn	Variation
VAS	VISSR Atmospheric Sounder
VC	Vicinity
VCNTY	Vicinity
VCOT	VFR Conditions on Top
VCS	Velocity Cross Section
VCTR	Vector
vcy	Vicinity
VDUC	VAS Data Utilization Center
Ver	Vertical
VFR	Visual Flight Rule
VFY	Verify
Vfyd	Verified
Vfyg	Verifying
Vfys	Verifies
VGF	Virtual Graphics File
VHF	Very High Frequency
VIL	Vertically-Integrated Liquid water
VIL	Vertically Integrated Liquid
VIP	Very Important Person
VIP	Video Integrator and Processor

Vis	Visible
VISSR	visible and infrared spin scan radiometer (GOES)
VLCTY	Velocity
VLCTYS	Velocities
VLNT	Violent
Vlntly	Violently
VLY	Valley
VLYS	Valleys
VMC	visual meteorological conditions
VOL	Volume
VOLMET	Meteorological information for aircraft in flight
VOMIT	VIL Of the Moment In Time
VOR	VHF Omnidirectional Range
VOR	VHF Omnidirectional Radio Range
Vort	Vorticity
VR	Veer
vrb	Variable
VRBL	Variable
Vrg	Veering
VRISL	Vancouver Island, BC
vrs	Veers
VRT MOTN	Vertical Motion
Vry	Very
Vsa	By Visual Reference to the Ground
VSB	Visible
VSBY	Visibility
VSBYDR	Visibility Decreasing Rapidly
VSBYIR	Visibility Increasing Rapidly
VT	Vermont
VV	Vertical Velocity
VVP	Volume Velocity Processing
VVSTORM	model-based convection algorithm
VWP	Velocity Azimuth Display Wind Profile
W	White
W	West
WA	Western Approaches
WAA	Warm Air Advection
WAC	World Aeronautical Chart
WADL	West African Disturbance Line
WAFC	World Area Forecast Center
WAFS	World Area Forecast System
WAMPS	Weather Automated Mission Planning Software
WARP	Weather and Radar Processor
WB	Westbound
WB	Weather Bureau
Wbnd	West Bound
WBZ	Wet-Bulb Zero
WCM	Warning Coordination Meteorologist
WDI	Wind Direction Indicator
WDLY	Widely

WDSPR	Widespread
WDSPRD	Widespread
WEA	Weather
WED	Wednesday
WEF	With Effect From
WEFAX	Weather Facsimile
WER	WEAK ECHO REGION
WETM	Weather Team
WFO	Weather Forecast Office
Wfos	Weather Forecast Offices
WFP	Warm Front Passage
WI	Within
WI	Wisconsin
WIBIS	Will Be Issued
WID	Width
WIDA	Weather Impact Decision Aids
WIE	With Immediate Effect
WILCO	Will Comply
WIMS	Weather Information Management System
WINDS	Weather Information and Display System
WINT	Winter
WINTEM	Forecast upper wind and temperature for aviation
WIP	Work In Progress (process)
WIST	Weather Information for Surface Transportation
WK	Weak
WKDAY	Weekday
WKEND	Weekend
Wkn	Weaken
Wkng	Weakening
Wkns	Weakens
Wkr	Weaker
Wkst	Weakest
wl	will
WLY	Westerly
WMC	World Meteorological Center
WMO	World Meteorological Organization (ICSU)
WMSCR	Weather Message Switching Center Replacement
WND	Wind
WND	Windsor
Wnds	Winds
WNW	West-northwest
WNWLY	West-northwesterly
WNWRN	West-Northwestern
WNWWD	West-Northwestward
WO	Without
WPLTO	Western Plateau
Wrm	Warm
WRMFNT	Warm Front
Wrmfntl	Warm Frontal
Wrmg	Warming

Wrmr	Warmer
Wrmst	Warmest
Wrn	Western
WRNG	Warning
WRNGS	Warnings
wrs	Worse
WRS	Weather Reconnaissance Squadron
WS	Wind Shear
WSDDM	Weather Support to Deicing Decision Making
WSFO	Weather Service Forecast Office
WSFOS	Weather Service Forecast Offices
WSHFT	Wind Shift
WSHFTS	Wind Shifts
WSOM	National Weather Service Operations Manual
WSP	Weather Systems Processor
WSR-57	A NWS Weather Surveillance Radar designed in 1957
WSR-74	A NWS Weather Surveillance Radar designed in 1974
WSR-88D	Weather Surveillance Radar - 1988 Doppler
WST	Weather Support Team
WSTCH	Wasatch Range
WSW	West-southwest
Wswly	West-Southwesterly
WSWRN	West-Southwestern
WSWWD	West-Southwestward
WTR	Water
Wtrs	Waters
WTSPT	Waterspout
Wtspts	Waterspouts
wtu	Weather Technology Unit
WUD	Would
WV	West Virginia
WV	Water Vapor
Wvs	Waves
WWD	Westward (weather reports)
Wws	Severe Weather Watches
WWW	World Weather Watch
WX	Weather
WY	Wyoming
X	Cross
XBT	expendable bathythermograph (oceanography)
xcp	Except
Xng	Crossing
xpc	Expect
XPCD	Expected
XPCG	Expecting
xpcs	Expects
XPLOS	Explosive
XS	Atmospherics
XTND	Extend
Xtndd	Extended

Xtndg	Extending
XTRM	Extreme
Xtrmly	Extremely
Y	Yellow
Y2K	Year 2000
YDA	Yesterday
YKN	Yukon
YLSTN	Yellowstone
YR	Your
Z	Zulu (Greenwich mean time)
Z dr	Differential Reflectivity
Ze	Equivalent Radar Reflectivity
ZFP	Zone Forecast Product
ZL	Freezing Drizzle
ZN	Zone
zns	Zones
ZR	Freezing Rain