A AMS
A Index
AAAS
AAWU
Ablation
ABNDT
Absolutely Stable Air
Absolutely Unstable Air
Absorption
ABT
Abutment
Abutment Seeping
ABV
AC
ACCAS
Accessory Cloud
Accretion
ACCUMS
Accuracy
Acid Precipitation
Acid Rain
ACLD
ACPY
Acre-foot
ACRS
Action Stage
Active
Active Conservation Storage
Active Dark Filament (ADF)
Active Longitude
Active Prominence
Active Prominence Region (APR)
Active Region (AR)
Active Storage Capacity
Active Surge Region (ASR)
ACTV
ACYC
ADAPTATION (ADAPTABLE) PARAMETER
ADAS
Additive Data
ADDS
Adiabat
Adiabatic
Adiabatic Lapse Rate
Adiabatic Process
Adirondack Type Snow Sampling Set
ADJ
ADPC
ADVCTN
Advection
Advection Fog
ADVIS
Advisory
ADVN
ADVY
Aeration Zone
Aeroallergens
Aerosol
AFB
AFCT
AFD
AFOS
AFRED
AFSS
AFT
Afterbay
AFTN
AFTR
AFWA
AGC
AGDISP
AGFS
Agglomerate
AGL
AGL
AGN
AHD
AHOS
AHOS-S
AHOS-T
Air
Air Mass
Air Mass Thunderstorm
Air Pollutant
Air Pollution Potential
Air Quality Model
Air Stagnation
Air Stagnation Advisory
Air Toxin
Air Transportable Mobile Unit
Airborne Snow Survey Program
AIRMET
AIV
Alaska Current
Albedo
Alberta Clipper
ALERT
Alert Stage
Aleutian Current
Aleutian Low
ALF
ALG
Algorithm
ALIASING
Alluvium
Along-slope Wind System
ALQDS
ALTHO
Altimeter
Altimeter Setting
Altocumulus
Altostratus
Ambient
AMD
AMOS
Amplifier
Amplitude
AMS
AMT
AMVER
AMVER/SEAS
Anabranch
Analog
Analog Signal
ANBURS
Anchor Ice
Anchor Ice Dam
Anemometer
Aneroid Barometer
Angels
Angle of Reflection
Angstrom
Annual Flood
ANOMALOUS PROPAGATION (AP)
Anomaly
Antedecent Precipitation Index
ANTENNA GAIN
Anthelion
Anthropogenic Source
Anti-wind
Anticyclogenesis
Anticyclone
Anticyclonic Rotation
Antilles Current
Anvil
Anvil Crawler
Anvil Dome
Anvil Rollover
Anvil Zits
AO
AOA
AOB
AOPA
AP
AP Index
APD
Aphelion
API Method
Apogee
Apparent Temperature
Apparent Wind
APRCH
APRCHG
APRNT
APST
Aquiclude
Aquifer
Aquifuge
ARAM
Arch Dam
Arch Filament System (AFS)
Arctic
Arctic front
Arctic Oscillation
Arctic Sea Smoke
Arcus
Area Forecast Discussion
Area of Influence
Area Source
Area Wide Hydrologic Prediction System
Area-Capacity Curve
Arid
ARINC
ARND
ARR
Arroyo
ARSI
ART
ARTCC
Artesian Well
Artificial Control
AS
ASAP
ASAPTRAN
ASB
ASL
ASOS
ASOS
ASR-9
ASSOCIATED PRINCIPAL USER
Astronomical Dawn
Astronomical Dusk
Astronomical Unit
ATC
ATDTDCS
Atmosphere
Atmospheric Boundary Layer
Atmospheric Circulation Model
Atmospheric Pressure
Atmospheric Radiation
ATMP
Attenuation
ATTENUATION
ATTM
Augmented report
Aurora
Aurora Australis
Aurora Borealis
Auroral Oval
Automated Event Reporting Gage
Automated Report
Automated Surface Observing System
AUTOMATIC GAIN CONTROL
Autumn
Autumnal Equinox
Avalanche
Avalanche Advisory
AVBL
AVG
AVHRR
AVN
AVP
AWC
AWHPS
AWIPS
AWOS
Azimuth
Azimuth Angle
Azores Current
Azores High
Back Door Cold Front
Back-building Thunderstorm
Back-sheared Anvil
Backfire
Backflow
Backing
Backing Winds
Backscatter
Backsight
Backwater Curve
Backwater Effect
Backwater Flooding
BAM
BANDPASS FILTER
Bandwidth
Bank
Bank Storage
Bankfull
Bankfull Stage
Banner Cloud
BAPSU
Bar
Barber Pole
Baroclinic leaf shield
Baroclinic Zone
Baroclinity
Barogram
Barograph
Barometer
Barometric Pressure
Barotropic System
Barotropy
Barrage
Barrier Jet
Bartel's Rotation Number
BASE DATA
Base Flood
BASE PRODUCTS
Base Reflectivity
Base Station
Base Width
Baseflow
Basin
Basin Boundary
Basin Lag
Basin Recharge
Bathymetry
BCKG
BCM
BCMNG
BD
Beach Erosion
BEAM FILLING
BEAM WIDTH
Bear's Cage
Beaufort Scale
Beaver('s) Tail
Bed Load
Beginning of Freezup
Beginning of the Breakup
Benchmark
Bergeron Process
Bergy Bit
Bermuda High
Best Track
BFR
BGN
BHND
BIAS
Billow Cloud
BIN
BINOVC
BKN
BL
Black Ice
Blackbody
Blackbody Radiation
BLD
BLDUP
Blizzard
Blizzard Warning
BLO
Blocked Flow
Blowing
Blowing Dust or Sand
Blowing Snow
Blowing Snow Advisory
Blue Watch or Blue Box
Blustery
BLV
BLZD
BN
BNDRY
Bomb
Bora
Border Ice
Boundary Layer
Bounded Weak Echo Region (BWER)
BOVC
Bow Echo
Bowen Ratio
Box Model
BR
Brackish Ice
Braided Stream
Brash Ice
BRD
Breach
Breakers
Breakup
Breakup Date
Breakup Jam
Breakup Period
Breezy
BRF
Bright Band
Bright Band
Bright Surge on the Disk (BSD)
Bright Surge on the Limb (BSL)
Brightness
Brisk
Brisk Wind Advisory
BRK
BRN
Broadband
Brocken Specter
Broken Level
BS
BTR
BTWN
Bubble High
Bubbler Gage
BUFKIT
Bulk Richardson Number
Buoyancy
Burst
Bust
Buttress Dam
BWER
BYD
C
C AMS
CA
CAA
CAD
CADAS
Calibration
Calm
Canyon Wind
Cap
Cap Cloud
CAPE
Capillarity
Capillary Fringe
Capillary Waves
Capillary Zone
Capping
Capping Inversion
CAPS
Carbon Dioxide
Carrington Longitude
Catalina Eddy
Catchment Area
Categorical
CAVU
Cb
CBMAM
CC
CCITT
CCL
CD
CDB
CDC
CDD
CDFNT
CDT
Ceiling
Ceilometer
Cell
Celsius
CEM
Center
Centimeter Burst
Central Meridian Passage (CMP)
CENTROID
CFC
CFP
CFS
Cfs-Day
CG
Chance
Channel
Channel Inflow
Channel Lead
Channel Routing
Channeled High Winds
Channelization
CHC
Chemistry Model
CHG
CHGS
Chinook
Chinook Arch
Chlorofluorocarbons
Chromosphere
Chromospheric Events
CI
CIG
CIN
CIO
Circulation
Cirriform
Cirrocumulus
Cirrostratus
Cirrus
Civil Dawn
Civil Dusk
Civil Emergency Message
CL
Class I Areas
CLD
Clear Air Turbulence
Clear Ice
Clear Slot
Client Agency
Climate
Climate Change
Climate Diagnostics Bulletin
Climate Diagnostics Center
Climate Model
Climate Outlook
Climate Prediction Center
Climate System
Climatological Outlook
Climatology
CLIMO
Climometer
Closed Basin
Closed Basin Lake Flooding
Closed Low
Cloud
Cloud Ceiling
Cloud Condensation Nuclei
Cloud Layer
Cloud Movement
Cloud Streets
Cloud Tags
Cloudy
CLR
CLRG
Clutter
cm
CM
CMPLT
CMPLX
CNIF
CNTR
CNTRL
CNVG
CNVTV
Coalescence
Coastal Waters
Coastal Waters Forecast (CWF)
Coastal/Lakeshore Flood Advisory
Coastal/Lakeshore Flood Warning
Coastal/Lakeshore Flood Watch
Coastal/Lakeshore Flooding
COE
Coherent Radar
Cold Advection
Cold Air Avalanche
Cold Air Dam
Cold Air Damming (CAD)
Cold Air Funnel
Cold Front
Cold Occlusion
Cold Pool
Collar Cloud
Collection Efficiency
Colorado Low
Columnar Ice
Combined Seas
Comma Cloud
Comma Echo
Complex Gale/Storm
Complex Terrain
Composite
Composite Hydrograph
Comprehensive Flare Index (CFI)
Concentric Rings
COND
Condensation
Condensation Funnel
Conditionally Unstable Air
Conduction
Cone of Depression
Cone of Influence
Confined Ground Water
Confluence
Congestus
Congressional Organic Act of 1890
Coning
Conjugate Points
Conservation Storage
Consolidated Ice Cover
Constant Pressure Chart
CONT
Contents
Continental Air Mass
Continental Shelf
Continuum Storm (CTM)
Control Points
CONTS
CONUS
Convection
Convective Boundary Layer
Convective Clouds
Convective Condensation Level
Convective Inhibition
Convective Outlook
Convective Overdevelopment
Convective Temperature
Convergence
Conveyance Loss
Cooling Degree Days
Cooperative Observer
Coordinated Universal Time (UTC)
COR
Core Punch
Coriolis Force
Corn Snow Ice
Corner Effects
Corona
Coronal Hole
Coronal Rain
Coronal Transients
Correlated Shear
Correlation
Cosmic Ray
County Warning and Forecast Area
County Warning Area
Coupled Atmosphere-Ocean Model
Coupled Model
Couplet
CPC
Creek
Crepuscular Rays
Crest
Crest Gage
Crest Width
Critical Depth
Critical Flow
Critical Rainfall Probability
CRN
Crochet
Crop Moisture Index
Cross-Valley Wind System
Crown Fire
Crowning
CRP
CRS
Cryology
CSDRBL
CSI
CST
CSTL
CTY
CU
Cubic Feet per Second
CUFRA
Cumuliform
Cumuliform Anvil
Cumulus
Cumulus Buildups
Cumulus Congestus
Current
Current Meter
Curtain Drain
Cutoff
Cutoff Low
CVR
CWA
CWFA
CYC
CYCLGN
Cyclic Storm
Cyclogenesis
Cyclone
Cyclonic Circulation
D
D Region
Daily Climatological Report
Daily Flood Peak
DALR
Dam
Dam Failure
DAMBRK
DAPM
Dark Surge on Disk (DSD)
Dart Leader
Data Point
DATACOL
DATANET
Dawn
Day Length
dBZ
DCP
DDS
Dead Storage
Debris Cloud
Decadal
Declination
Deep Percolation Loss
Deep Seepage
Deep well
Deepening
Deformation Zone
Deformed Ice
Degradation
Degree Day
Delta
Delta T
Dendrites
Dendritic
Dense Fog Advisory
Density Current
Density of Snow
DEP
Depletion Curve
Depression
Depression Storage
Depth of Runoff
Derecho
Derived Products
Desertification
Design Criteria
Detention Basins
Detention Storage
Detritus
Developing Gale/Storm
Dew
Dew Point
Dew Point Depression
Dew Point Front
DEWP
DFUS
Diabatic
Diablo Wind
Diagnostic Model
Diamond Dust
Differential Motion
Differential Rotation
Diffuse Ice
Difluence
DIR
Direct Flood Damage
Direct Hit
Direct Runoff
Direct Solar Radiation
Directional Shear
Disappearing Solar Filament (DSF)
Discharge
Discharge Curve
Discharge Table
Disdrometer
Disk
Dispersion
Distribution (Hydro)Graph
Diurnal
Diurnal Cycles
Diurnal Temperature Range
Divergence
Diversion
Divide
Dividing Streamline
Dividing Streamline Height
DMNT
DMSH
DNR
DNS
DNSTRM
Dobson Unit
DOC
DOH
Doldrums
Domain
Domestic Consumption
Domestic Use of water
Doppler Radar
Down-Valley Wind
Downburst
Downdraft
Downslope Flow
Downstream
Downstream Slope
Downwash
Downwelling Radiation
DP
DPD
DPNG
DPTH
DPTR
DPVA
DR
Drainage Area
Drainage Basin
Drainage Density
Drainage Divide
Drainer
Drains (Relief Wells)
Drawdown
DRCTN
Dredging
DRFT
Drifting Ice
Drifting Snow
Drizzle
Drop-size Distribution
Drought
Drought Assessments
Drought Index
Dry Adiabat
Dry Adiabatic Lapse Rate
Dry Crack
Dry Floodproofing
Dry Line
Dry Line Bulge
Dry Line Storm
Dry Microburst
Dry Punch
Dry Slot
Dry Thunderstorm
Dry Weather Flow
Dry-adiabatic
DSA
DSIPT
Dst Index
DTRT
Duration Curve
Duration of Ice Cover
Duration of Sunshine
DURG
DURN
Dusk
Dust Devil
Dust Plume
Dust Storm
Dust Whirl
DVLP
DVV
DWNDFT
DWNSLP
DWPT
Dynamic Ice
Dynamic Lifting
Dynamic Wave Routing Model (DWOPER)
Dynamics
DZ
E
E REGION
E-19, Report on River Gage Station
E-19a, Abridged Report on River Gage Sta
E-3, Flood Stage Report
E-5, Monthly Report of River and Flood c
E-7, Flood Damage Report
Easterlies
Ebb Current
EBND
EBS
Eccentricity
Echo
Echo Tops
ECMF
ECMWF
Eddy
EDT
EFCT
Effective Porosity
Effective Precipitation
Effective Terrestrial Radiation
Effective Topography
Effluent Seepage
Effluent Stream
El Nio
Element
ELEV
Elevated Convection
ELSW
ELY
Embankment
EMBDD
EMC
Emergency Action Plan
Emergency Services
Emerging Flux Region (EFR)
Emissivity
EML
ENDG
Energy Dissipator
Energy Helicity Index
Engineer's Level
Enhanced V
Enhanced Wording
ENHNCD
ENSEMBLE
Ensemble Forecast
Ensemble Hydrologic Forecasting
Ensembles
ENSO
ENSO Diagnostic Discussion
ENTR
Entrainment Zone
Entrance Region
Entropy
Environment Canada
Environmental Lapse Rate
Environmental Temperature Sounding
EPA
EPCTG
EPV
Equi-Potential Line
Equilibrium Drawdown
Equilibrium Level
Equilibrium Surface Discharge
Equilibrium Time
Equinox
Equivalent Potential Temperature
ERLY
ERN
Erosion
Eruptive
Eruptive Prominence on Limb (EPL)
ESP
EST
Estuary
Esturine waters
Esturine Zone
ETA
Eta Model
Evaporation
Evaporation Pan
Evaporation Rate
Evaporation-mixing Fog
Evaporimeter
Evapotranspiration
EVE
EWD
EWW
Excess Rain
Excessive Heat
Excessive Heat Outlook
Excessive Heat Warning
Excessive Heat Watch
EXCLD
Exclusive Flood Control Storage Capacity
Exit Region
Exosphere
Experimental Product
Explosive Deepening
EXTD
Extended Forecast Discussion
Extraterrestrial Radiation
Extratropical
Extratropical Cyclone
Extratropical Low
Extreme Ultraviolet (EUV)
Extreme Wind Warning
Extremely Low Frequency (ELF)
EXTRM
EXTSV
Eye
Eye Wall
F
F Corona
F Region
F Scale
FA
FAA
Face
Facula
Fahrenheit
Fair
Fall
Fall Line
Fall Wind
Fallstreak
FAN
Fanning
FASTST
Fathom
FAWS
FBO
FCST
Federal Snow Sampler
Feeder Bands
FEMA
Ferrel Cell
Fetch
Few
Few Clouds
FFG
FG
Fibril
Field (Moisture) Capacity
Field Moisture Deficiency
Filament
Filament Channel
Fill Dam
Filling
Fire Wind
Firebrand
Firn (Snow)
Firn Line
First Law of Thermodynamics
Flanking Line
Flare
Flash
Flash Flood
Flash Flood Guidance
Flash Flood Statement
Flash Flood Table
Flash Flood Warning
Flash Flood Watch
Flash Multiplicity
Flashboards
FLG
Float Recording Precipitation gage
Floc
Floe
Flood
Flood Categories
Flood Control Storage
Flood Crest
Flood Frequency Curve
Flood Loss Reduction Measures
Flood of Record
Flood Plain
Flood Potential Outlook
Flood Prevention
Flood Problems
Flood Profile
Flood Routing
Flood Stage
Flood Statement (FLS)
Flood Warning
Flood Watch
Flood Wave
Flooded Ice
Floodproofing
Floodwall
Floodway
Flow
Flow Duration Curve
Flow Separation
Flow Splitting
Flowing Well
FLRY
FLS
Fluence
Fluid
Flurries
Flux
FLW
FM
fMin
FNT
FNTGNS
FNTLYS
Foehn
Foehn Pause
foEs
foF2
Fog
Fogbow
Forced Channeling
Forebay
Forecast
Forecast Crest
Forecast Guidance
Forecast Issuance Stage
Forecast Periods
Forecast Point
Forecast valid for
Foresight
Forward Flank Downdraft
Fountainhead
FOUS
FPO
FPS
FQT
Fractocumulus
Fractostratus
Fracture
Fracture Zone
Fracturing
Fractus
Frazil Ice
Frazil Slush
Freak Wave
Free Atmosphere
Free Ground Water
Freeboard
Freeze
Freeze Warning
Freezeup date
Freezing Drizzle
Freezing Drizzle Advisory
Freezing Fog
Freezing Level
Freezing Rain
Freezing Rain Advisory
Freezing Spray
Freezing Spray Advisory
Freezup jam
French Drain
Freshet
Friction
Friction Head
Friction Layer
FRMG
Front
Frontal Inversion
Frontogenesis
FROPA
FROSFC
Frost
Frost Advisory
Frost Point
Frostbite
Frozen Dew
FRST
FRZ
FRZN
FSCBG
FT
FTHR
FTPMAIL
Fugitive Dust
Fujita Scale
Fujiwhara Effect
Full-Physics Numerical Model
Fumigation
Funnel Cloud
Funnelling
FVT
FWC
FWD
FZRA
G
G/KG
Gage
Gage Datum
Gaging Station
Gale
Gale Warning
Gallery
Gamma
Gamma Ray
Gap Winds
Gas Laws
Gate
Gauss
Gaussian Plume Model
Gaussian Puff Model
GDR
GEMPAK
GEN
General Circulation
General Circulation Models
General Wind
Geohydrology
Geomagnetic Elements
Geomagnetic Field
Geomagnetic Storm
Geophysical Events
Geophysics
Geopotential Height
Geostationary Satellite
Geostrophic Wind
Geosynchronous
GF
GFS
GIS
Glaciation
Glacier
Glacier Dammed Lake
Glacier Wind
Glaze
GLF
Global Forecast System
Global Temperature Change
Global Warming
Glory
GLS
GMDSS
GMN
GMT
GND
GNRL
GOES
GoMoos
GPS
GRAD
Gradient
Gradient High Winds
Gradual Commencement
Granulation
Graupel
Gravity Dam
Gravity Wave
Graybody
GRDL
Great Circle Track
Great Lakes Faxback
Great Lakes Freeze-Up/Break-Up Outlook
Great Lakes Marine Forecast (MAFOR)
Great Lakes Storm Summary
Great Lakes Weather Broadcast
Green Line
Greenhouse Effect
Greenhouse Gases
GRIB
Grids
Ground Blizzard Warning
Ground Clutter
Ground Fog
Ground Heat Flux
Ground receive sites
Ground Stroke
Ground Water
Ground Water Divide
Ground Water Flow
Ground Water Hydrology
Ground Water Outflow
Ground Water Overdraft
Ground Water Runoff
Grounded ice
Group Velocity
Grout Curtain
Growing Degree Day
Growing Season
Growler
GRT
GRTST
GSP
GST
GSTY
GTR
Gulf Stream
Gunge
Gust
Gust Front
Gustnado
Gyres
H-Alpha
H-component of the Geomagnetic Field
H0
H5
H7
H8
Hague Line
Hail
Hail Contamination
Hail Index
Hail Size
Hail Spike
Haines Index
Halo
Hanging (ice) dam
Hazardous Weather Outlook
Hazards Assessment
Haze
HDD
HDRAIN
Head
Head Loss
Head Race
Headward Erosion
Headwater Basin
Headwaters
Heat Advisory
Heat Exhaustion
Heat Index
Heat Lightning
Heat Stroke
Heat Wave
Heating Degree Days
Heavy Freezing Spray
Heavy Freezing Spray Warning
Heavy Snow
Heavy Snow Warning
Heavy Surf Advisory
Hectopascal
Height
Helicity
Hertz
HI
HIC
High
High Clouds
High Energy Event
High Frequency (HF)
High Latitudes
High Risk (of severe thunderstorms)
High Seas Forecast
High Surf
High Surf Advisory
High Surf Warning
High Wind
High Wind Advisory
High Wind Warning
High Wind Watch
High-Speed Stream
Hinge Crack
HLS
HMD
HND
Hoar Frost
Hodograph
Homologous Flares
Hook Echo
Horizon
Hourly Precipitation Data (HPD)
HP Storm
hPa
HPC
HR
HRS
HSA (Hydrologic Service Area)
Humidity
Humidity Recovery
Hummock
Hummocked Ice
Hurricane
Hurricane Force Wind Warning
Hurricane Local Statement
Hurricane Season
Hurricane Warning
Hurricane Watch
HV
HVY
HWVR
Hyder Flare
Hydraulic Fill Dam
Hydraulic Flow
Hydraulic Grade Line
Hydraulic Head
Hydraulic Jump
Hydraulic Permeability
Hydrograph
Hydrograph Separation
Hydrographic Survey
Hydrologic Budget
Hydrologic Cycle
Hydrologic Equation
Hydrologic Model
Hydrologic Service Area
Hydrology
Hydrometeor
Hydrometeorologists
Hydrometeorology
Hydrostatic Head
Hydrometeorology
Hyetograph
Hygrometer
Hygroscopic
Hypothermia
HZ
Ice Age
Ice Boom
Ice Bridge
Ice Crystals
Ice Fog
Ice Gorge
Ice Jam
Ice Nucleus
Ice Pellets
Ice Push
Ice Run
Ice Shove
Ice Storm
Ice Storm Warning
Ice Twitch
Iceberg
Icelandic Low
Icing
Ideal Gas Laws
IFR
Impermeable
Impervious
IMPL
Import
IMPT
Impulse
in Hg
In-Cloud Lightning
Inactive Storage Capacity
Inch-Degrees
Inches of Mercury
Inches of Runoff
INCR
INDC
Index of Wetness
Indian Summer
Indirect Hit
Industrial Consumption
Infiltration
Infiltration Capacity
Infiltration Index
Infiltration Rate
Inflow Bands
Inflow Jets
Inflow Notch
Inflow Stinger
Influent Seepage
Influent Stream
Infrared Satellite Imagery
Initial Detention
Inland freshwater wetlands
Inland Hurricane Warning
Inland Hurricane Watch
Inland Tropical Storm Warning
Inland Tropical Storm Watch
INLD
Insolation
Instability
INSTBY
Instrument Flight Rules
Instrument Shelter
Intangible Flood Damage
Interbasin Transfer
Interception
Interception Storage Requirements
Interflow
Intermediate Synoptic Times
Intermittent Stream
International Date Line
Interplanetary Magnetic Field
Interpolate
Intertropical Convergence Zone
Intraseasonal Oscillation
INTS
INTSFY
INTST
Inversion
INVOF
INVRN
Ionosphere
Ionospheric Storm
IPV
IR
Iridescence
Iridescent Clouds
Irrigation
Irrigation Requirement
Isallobar
Isentropic Analysis
Isentropic Lift
Isentropic Surface
Isobar
Isobaric Chart
Isobaric Process
Isobath
Isochrone
Isodop
Isodrosotherm
Isoheight
Isohel
Isohyet
ISOL
Isolated
ISOLD
Isopleth
Isotach
Isotherm
Isotropic
Issuance Time
ITCZ
ITWAS
J/kg
January Thaw
Jet
Jet Max
Jet Streak
Jet Stream
Jet Stream Cirrus
Jet Wind Speed Profile
Jetty
JMA
Jokulhlaup
JSTR
Juvenile Water
K
K AMS
K Corona
K-Index
Katabatic Wind
Katafront
Keetch-Byrum Drought Index
Kelvin Temperature Scale
Kelvin Waves
Kelvin-Helmholtz Waves
Kilopascal
Kinetic Energy
Klystron
Knot
Knuckles
Kp Index
KT
KTS
La Nia
Lag
Lake Breeze
Lake Effect Snow
Lake Effect Snow Advisory
Lake Effect Snow Squall
Lake Effect Snow Warning
Lake Effect Storm
Lakeshore Flood Advisory
Lakeshore Flood Watch
Lakeshore Flooding
LALs
Laminar
Laminar Flow
Land Breeze
Landfall
Landspout
Lapse Rate
Large Scale
Last Update
LAT
Latent Heat
Latent Heat Flux
Latitude
LAWEB
Layer Composite Reflectivity Average
Layer Composite Reflectivity Maximum
Layered Haze
LCD (Local Climatological Data)
LCL
LDS
LDT
Leader
Leader Spot
Lee
Lee Wave
Leeside Low
Leeward
Left Exit Region
Left Front Quadrant
Left Mover
Length
Lentic System
Lenticular Cloud
Levee
Level of Free Convection
LEWP
LFC
LFT
LGT
LGWV
LI
Lid
Lid
LIFR
Lifted Index
Lifting Condensation Level
Light Bridge
Lightning
Lightning Channel
Lightning Discharge
Lightning Stroke
Likely
Limb
Limb Flare
Limnology
Line Echo Wave Pattern
Line Source
Liquid Water Equivalent
Lithometeor
Lithosphere
Littoral Zone
Live Capacity
LIVV
LKLY
LLJ
LLWS
LMTD
LN
Loaded Gun (Sounding)
Local Convective Wind
Lofting
Long Term Retention
Longitude
Longwave Radiation
Longwave Trough
Loop Prominence System
Looping
LOPRES
Loran
Lotic System
Low
Low Frequency
Low Level Jet
Low Pressure System
Lowland Flooding
LP Storm
LPS
LRG
LSR
LST
LTD
LTL
LTLCG
LTNG
LTR
LTST
LVL
LVLS
LWR
Lysimeter
M 3000
M2/S2
Mackeral Sky
Macroburst
Macroscale
Madden-Julian Oscillation
MAFOR
Magflare
Magnetic Bay
Magnetogram
Magnetopause
Magnetosphere
Main Stem
Main Synoptic Times
MAINT
Major Flare
Major Flooding
Major Hurricane
MALR
Mammatus Clouds
MAP
Mare's Trail
MAREP
Marginal Visual Flight Rules
Marine Inversion
Marine Push
Marine Small Craft Thunderstorm Advisory
Marine Small Craft Wind Warning
Marine Weather Statement
Marine Zone
Maritime Air Mass
Maritime Polar Air Mass
Maritime Tropical Air Mass
MAROB
MARS
Massif
MAV
MAX
Max Parcel Level (MPL)
Maximum Spillway Discharge
Maximum Sustained Surface Wind
Maximum Temperature
Maximum Unambiguous Range
Maximum Unambiguous Velocity
MAXT
MB
MCC
MCS
MD
MDFY
MDLS
MDNGT
MDT
Mean
Mean Annual Temperature
Mean Areal Precipitation
Mean Daily Temperature
Mean Depth
Mean Doppler Velocity
Mean Low Water
Mean Lower Low Water
Mean Sea Level
Meander
Meander Belt
Measured Ceiling
Medium Frequency
Medium Range
MEGG
Melting Level
Melting Point
Meniscus
Mercury Barometer
Meridian
Meridional Flow
MESO
Mesoclimate
Mesocyclone
Mesohigh
Mesolow
Mesonet
Mesopause
Mesoscale
Mesoscale Convective Complex
Mesoscale Convective System
Mesoscale Discussion
Mesoscale High Winds
Mesosphere
MET
METAR
Meteogram
Meteoric Water
Meteorologist
Meteorology
METRO
MeV
MEX
MI
MIC
Microbarograph
Microburst
Microclimate
Micron
Microscale
Microwave
Microwave Burst
MID
Mid-Flame Wind
Mid-Latitude Areas
Mid-level Cooling
Middle Clouds
Middle Latitudes
Mie Scattering
Millibar
MIN
Minimum Discernible Signal
Minimum Temperature
Minor Flooding
Minor Tidal Overflow
MINT
MISC
MISG
Misoscale
Mist
Mixed Layer
Mixed Precipitation
Mixing Depth
Mixing Heights
Mixing Ratio
MJO
MLCAPE
MLLI
MLLW
MLW
MNLY
MOBY
Model Output Statistics
Moderate Flooding
Moderate Risk (of severe thunderstorms)
Moist Adiabat
Moist Adiabatic Lapse Rate
Moist-adiabatic
Moisture
Moisture Advection
Moisture Convergence
Moisture Equivalent
Moisture Ridge
Molecule
Monitor Stage
Monostatic Radar
Monsoon
Monthly Climatological Report
Morning Glory
MOS
Mostly Clear
Mostly Cloudy
Mostly Sunny
Mount Wilson Magnetic Classifications
Mountain Wave
Mountain Wind System
Mountain-Plain Wind System
Mountainado
MOV
Movable Bed
MOVG
MR
MRF
MRGL
MRNG
MSG
MSL
MSL
MSLP
MST
MSTLY
MSTR
MT
MTN
MTNS
MTS
Mud Slide
Muggy
MULI
Multicell Thunderstorm
Multiple Doppler Analysis
Multiple Vortex Tornado
Multipurpose Reservoir
Municipal Use of Water
Mushroom
MVFR
MVS
MWD
MWS
N
Nacreous Clouds
Nadir
NAM
Nanotesla (nT)
NAO
NAO Index
National Ambient Air Quality Standards
National Climatic Data Center
National Digital Forecast Database
National Fire Danger Rating System
National Flood Summary
National Hurricane Center
National Hurricane Operations Plan
National Severe Storms Laboratory
National Weather and Crop Summary
Natural Control
Nautical Dawn
Nautical Dusk
Nautical Mile
Nautical Twilight
Navigation Methods
NAVTEX
NAVTEX Forecast
NBND
NC
NCAR
NCCF
NCDC
NCEP
NDBC
NDFD
NE
Neap Tide
Nearshore Forecast
NEC
NEG
Negative Vorticity Advection
Negative-tilt Trough
NELY
NERN
NESDIS
Net All-Wave Radiation
Net Rainfall
Neutral Line
Neutral Stability
NEWD
NEXRAD
NGM
NGT
NHC
NHOP
Nieve Penitente
Night
NIL
Nimbostratus
NLY
NM
NMBR
NMC
NML
NMRS
NOAA
NOAA Weather Radio
NOAA Weather Wire
Noctilucent Clouds
Nocturnal
Nocturnal Inversion
Nocturnal Jet
Nocturnal Thunderstorms
NOGAPS
NOHRSC
Non-Uniform Sky Condition
Non-Uniform Visibility
Nonattainment Area
Normal
Normal Water Surface Elevation
Normal Year
North Atlantic Oscillation
North Pacific High
North Wall
Northern Lights
Nor\'easter
Nowcast
NR
NRN
NRW
NS
NSSFC
NSSL
Numerical Forecasting
Numerical Weather Prediction
Numerous
NVA
NW
NWD
NWLY
NWP
NWR
NWRD
NWRN
NWS
NWSH
NWSO
NXT
OBS
OBSC
Obscuration
Obscuring Phenomena
Observation Well
Occluded Front
Occluded Mesocyclone
Oceanography
OCFNT
OCNL
OEODM
Office of Global Programs
Offshore Breeze
Offshore Flow
Offshore Waters
Offshore Waters Forecast
OFSHR
OH
OHD
Okta
OLR
Omega
Omega High
Onshore Breeze
Onshore Flow
Opaque
OPC
Open Lakes Forecast
Operational Products
Orifice
ORIG
Orographic
Orographic Lifting
Orographic Precipitation
Orographic Uplift
Orographic Waves
Orphan Anvil
Oscillation
OTLK
OTR
OTRW
Outer Convective Band
Outflow
Outflow Boundary
Outflow Channel
Outgoing Longwave Radiation
Outlet
Outlet Discharge Structure
Outlook
Outlook
OVC
Overcast
Overhang
Overland Flow
Overrunning
Overshooting Top
OVNGT
OVR
OVRN
OVRNGT
Ozone
Ozone Action Day
Ozone Advisory
Ozone Hole
Ozone Layer
PAC
Pacific Decadal Oscillation
Palmer Drought Severity Index
Pan Pan
Pancake Ice
Panhandle Hook
Parameter
Parapet Wall
Parcel
Parhelion
Partial Beam Filling
Partial-Duration Flood Series
Particle Trajectory Model
Partly Cloudy
Partly Sunny
Pascal
PAT
PBL
PC-GRIDDS
PCPN
PCT
PD
PDI
PDMT
PDO
PDS
PDS Watch
PDSI
PDT
Peak Discharge
Peak Gust
Peak Pulse
Peak Wind Speed
Pendant Echo
Penetrating Top
Penumbra
Perched Groundwater
Percolation
Percolation Path
Perennial Stream
Perigee
Perihelion
Permafrost
Permeability
Permeability Coefficient
Permeameter
Persistence
Persistence Forecast
Perturbation Model
Pervious Zone
PFD
Phenomenological Model
Phiezometer
Photochemical Smog
Photosphere
Phreatic water
PIBAL
Pilot Balloon
Pilot Report
Pingo
PIREP
Pitot Tube
PIX
PK
PL
PL
Plage
Plage Corridor
Plagenil
Plan Position Indicator
Planetary Boundary Layer
Plasma
Platform
Plow Wind
Plume Blight
Plume Impingement
Plume-dominated Fire
Pluvial
PMD
PMO
PNA
PNHDL
PNS
POH
Point Precipitation
Point Source
Polar Cap Absorption (PCA)
Polar Front
Polar Jet
Polar Jet Stream
Polar Orbiting Satellite
Polarization Radar
Pollutant
Pondage
Ponding
Pool
Pool Height
POP
Popcorn Convection
POPS
Porosity
POS
Positive Area
Positive Cloud to Ground Lightning
Positive Vorticity Advection
Positive-tilt Trough
Post-Flare Loops
Post-storm Report
Potential Temperature
Potential Vorticity
Powder Snow
Power
PPI
PPINE
PQPF
PRBLTY
PRBLY
PRCP
Pre-Frontal Squall Line
Pre-Frontal Trough
Pre-Hurricane Squall Line
PRECD
Precipitable Water
Precipitation
Precipitation Attenuation
Precipitation Mode
Precipitation Processing System
Precision
Predominant Wind
Preliminary Report
PRES
Prescribed Fire
Present Movement
Present Weather
Pressure
Pressure Altimeter
Pressure Altitude
Pressure Change
Pressure Characteristic
Pressure Couplet
Pressure Falling Rapidly
Pressure Gage
Pressure Gradient
Pressure Gradient Force
Pressure Head
Pressure Ice
Pressure Induced Wave
Pressure Jump
Pressure Rising Rapidly
Pressure Tendency
Pressure Unsteady
Pressure-driven Channeling
Prevailing Visibility
Prevailing Westerlies
Prevailing Winds
Prevention of Significant Deterioration
PRIM
Primary Ambient Air Quality Standards
Primary Control Tide Station
Primary Pollutant
Primary Swell Direction
PRIN
Probability
Probability Forecast
Probability of Hail
Probability of Precipitation
Probability of Thunderstorms
Probability of Tropical Cyclone Conditio
Product Resolution
Profiler
PROG
PROGGED
Prognostic Discussion
Progressive Derecho
Prominence
PROPA
Propagation
Property Protection
Proton
Proton Event
Proton Flare
PRST
PRVD
PSBL
PSBLY
Pseudo-Cold Front
Pseudo-Warm Front
PSG
PST
Psychrometer
PTCHY
PTCLDY
PTDY
PTLY
PTN
PTTN
PTWC
PTYPE
Public Information Statement
Public Severe Weather Outlook
Puddle
Puget Sound Convergence Zone
Pulse
Pulse Duration
Pulse Length
Pulse Radar
Pulse Repetition Frequency (PRF)
Pulse Repetition Time (PRT)
Pulse Resolution Volume
Pulse Severe Thunderstorms
Pulse Storm
Pulse Width
Pulse-Pair Processing
PVA
PVL
PW
PWAT
PWO
QG
QN
QPF
QPF Discussion
QPFERD
QPFHSD
QPFPFD
QSTNRY
QTR
QUAD
Quadrature
Quality of Snow
Quantitative Precipitation Forecast
Quasi-stationary
Quasi-stationary Front
Quiescent Prominence (Filament)
Quiet
R
RA
RADAP II
RADAR
Radar Beam
Radar Coded Message
Radar Cross Section
Radar Data Acquisition
Radar Meteorology
Radar Mosaic
Radar Product Generator (RPG)
Radar Range
Radar Reflectivity
Radar Reflectivity Factor (z)
Radial Velocity
Radiance
Radiation
Radiation Fog
Radiation Laws
Radiational Cooling
Radiational Inversion
Radio Emission
Radio Event
Radiofacsimile
Radiofax
Radioisotope Snow Gage
Radiosonde
Radius of Maximum Winds
RAFC
RAFS
Rain
Rain Foot
Rain Forest
Rain Gauge
Rain Induced Fog
Rain Shadow
Rain Shield
Rain-free Base
Rainbow
Rainfall
Rainfall Estimates
Range
Range Folding
Range Gate
Range Height Indicator
Range Normalization
Range Resolution
Range Unfolding
Rankine Vortex
RAOB
Rapid Deepening
Rapidly Intensifying
Rawinsonde
Rawinsonde Observation
RAWS
Rayleigh Scattering
RCKY
RCMD
RCV
RDG
RDS
Reach
Reach
Real-Time
Rear Flank Downdraft
Receiver
Reconnaissance Code
Record Event Report
Recreation Report
Recurrence
Red Flag
Red Flag Warning
Red Watch or Red Box
REF
Reference Mark
Reflection
Reflectivity
Reflectivity Cross Section
Reflectivity Factor
Refraction
Refractive Index
Refractivity
Regional Haze
Relative Humidity
Relative Vorticity
Relative Wind
RELBL
Relocated
Remote Observing System Automation
REP
Report
Reservoir
Residual Layer
Residual Moisture
Resonance
Response Time
Retrogression
Return Flow
Return Stroke
Rex Block
RFC
RGD
RGN
RH
RHI
Ribbon Lightning
Ridge
Ridge Ice
Right Ascension
Right Entrance Region
Right Mover
Right Rear Quadrant
Rime Ice
RIOGD
Riometer
Rip Current
Rip Tide
Riparian Zone
River Basin
River Flood Statement
River Flood Warning
River Flooding
River Forecast
River Forecast Center
River Gage
River Gage Datum
River Ice Statement
River Observing Station
River Recreation Statement
River Statement
River System
RLS
RLTV
RMN
RMTN
RMV
RNFL
Rocketsonde
Rockfill Dam
Rogue Wave
Roll Cloud
Rolled Filled Dam
Rope
Rope Cloud
Rope Stage
ROSA
Rossby Waves
Rotation
ROTG
Rotor Cloud
Rotten Ice
Rough Seas
Routing
RPD
RPLC
RPRT
RQR
RRQ
RSG
RSN
RTE
RTRD
RTRN
RTVS
RUC
Runoff
Runway Visual Range
RVA
RVF
RVI
RVR
RVS
RW
S
S-Band Radar
S/W
S/WV
SafetyNET
Saffir-Simpson Scale
Salinity (SAL)
SAME
SAMEX
Sampling Frequency
Sandstorm
Santa Ana Wind
Sastrugi
SAT
Satellite Hydrology Program
SATL
Saturation Vapor Pressure
SAWRS
SBCAPE
SBND
SBSD
SC
SCA
Scattered
Scattering
SCT
Scud
SE
Sea Breeze
Sea Breeze Convergence Zone
Sea Breeze Front
Sea Fog
Sea Ice
Sea Level Pressure
Sea Surface Temperatures
Seas
Second-Day Feet
Secondary Ambient Air Quality Standards
Secondary Pollutant
Sector Boundary
Sector Visibility
Sectorized Hybrid Scan
Securite
Sediment Storage Capacity
Seepage
Seiche
SEL
SELS
SELY
Sensible Heat Flux
Separation Eddy
Serial Derecho
SERN
Service Hydrologist
Servo Loop
Set
Set-up
Severe Icing
Severe Local Storm
Severe Local Storm Watch
Severe Thunderstorm
Severe Thunderstorm Warning
Severe Thunderstorm Watch
Severe Weather Analysis
Severe Weather Potential Statement
Severe Weather Probability
Severe Weather Statement
SEWD
SFC
Sferic
SG
SGFNT
Shallow Fog
SHARS
Shear
Sheet Flow
Sheet ice
Shelf Cloud
SHFT
SHLW
Shore ice
Short Term Forecast
Short Wave Fade (SWF)
Short-Fuse Warning
Shortwave
Shortwave Radiation
Shortwave Trough
Showalter Index
Shower
SHRA
SHRAS
SHRT
SHRTWV
SHSN
SHWR
Sidelobe
SIGMET
Signal-to-Noise Ratio
Significant Wave Height
Significant Weather Outlook
SIGWX
Single Cell Thunderstorm
SITOR
Sky Condition
SKYWARN
SL
SLD
Sleet
Sleet Warning
SLGT
Slight Chance
Slight Risk
Sling Psychrometer
SLO
SLOSH
SLP
SLT
SLY
SM
SMA
Small Craft
Small Craft Advisory
Small Craft Advisory for Hazardous Seas
Small Craft Advisory for Rough Bar
Small Craft Advisory for Winds
Small Craft Should Exercise Caution
Small Hail
Small Stream Flooding
Smog
Smoke
Smoke Dispersal
Smoke Management
Smoothed Sunspot Number
SMW
SN
Snotel
Snow
Snow Accumulation and Ablation Model
Snow Advisory
Snow Core
Snow Cornice
Snow Density
Snow Depth
Snow Flurries
Snow Grains
Snow Pack
Snow Pellets
Snow Pillow
Snow Shower
Snow Squall
Snow Stake
Snow Stick
Snow Water Equivalent
Snowboard
Snowcover
Snowflake
Snowmelt Flooding
Snowpack
SNR
SNW
SNW
SNWFL
SOI
Soil Moisture
Solar Coordinates
Solar Cycle
Solar Maximum
Solar Minimum
Solar Noon
Solar Sector Boundary (SSB)
Solar Wind
SOLN
SOLNS
Solstice
SOO
Sounding
Southern Oscillation
Southern Oscillation Index
Space Environment Center
SPC
SPCLY
SPD
Spearhead Echo
Special Avalanche Warning
Special Fire Weather
Special Marine Warning
Special Tropical Disturbance Statement
Specific Gravity
Specific Humidity
Specific Yield
Spectral Density
Spectral Wave Density
Spectral Wave Direction
Spectrum Width
Spectrum Width Cross Section
Speed Shear
SPENES
Sphere Calibration
Spillway
Spillway Crest
Spin-Up
SPKL
Split Flow
Splitting Storm
SPLNS
Sporadic E
SPOTNIL
Spotting
Spray
SPRD
Spring
Spring Tide
SPS
SQLN
Squall
Squall Line
SRF
SRH
SRN
SS
SSHS
SST
ST
St Lawrence Freeze-Up Outlook
St. Elmo's Fire
Stability
Stability Index
Stable
Stable Boundary Layer
Stable Core
Staccato Lightning
Stage
Stair Stepping
Standard Atmosphere
Standard Synoptic Times
State Forecast Product
State Weather Roundup
Station ID
Station Model
Station Pressure
Stationary Front
STBL
Steam Fog
Steepness
Steering Currents
Steering Winds
Stepped Leader
STFR
STG
Stilling basin
STJ
STLT
STM
STNRY
Stoplogs
Storm
Storm Data
Storm Motion
Storm Relative
Storm Relative Mean Radial Velocity Map
Storm Relative Mean Radial Velocity Regi
Storm Scale
Storm Surge
Storm Tide
Storm Total Precipitation
Storm Tracking Information
Storm Warning
Stormwater Discharge
Straight-Line Hodograph
Straight-line Winds
Stratiform
Stratiform Rings and Bands
Stratocumulus
Stratopause
Stratosphere
Stratospheric Ozone
Stratus
Stream line
Streamflow
STRFM
Striations
Strike
Sub-synoptic Low
Sublimation
Sublimation of ice
Subrefraction
Subsidence
Subsidence Inversion
Substation
Subsurface Storm Flow
Subtle Heavy Rainfall Signature
Subtropical Cyclone
Subtropical Depression
Subtropical Jet
Subtropical Storm
Suction Vortex
Sudden Commencement (SC)
Sudden Impulse (SI+ or SI-)
Sudden Ionospheric Disturbance (SID)
SUF
Summation Principle
Summer
Summer Solstice
Sun Dog
Sun Pillar
Sun Pointing
Sunny
Sunrise
Sunset
Sunspot
Sunspot Group Classification
Sunspot Number
Super Typhoon
Supercell
Supercell Thunderstorm
Supercool
Supercooled Liquid Water
Superrefraction
Surcharge Capacity
Surf Zone
Surf Zone Forecast
Surface Energy Budget
Surface impoundment
Surface Runoff
Surface Water
Surface Weather Chart
Surface-based Convection
Surge
Sustained Overdraft
Sustained Wind
SVR
SVRL
SW
SWD
SWE
SWEAT
Swell
Swell Direction
SWH
SWLY
SWODY1
SWODY2
SWP
SWRN
SWS
SWWD
SX
SXN
Symmetric Double Eye
Synchronous Detection
SYNOP
Synopsis
Synoptic Code
Synoptic Scale
Synoptic Track
Synoptic Weather
SYNS
SYS
Syzygy
T
T Rolls
TAF
TAFB
Tail Cloud
Tail-End Charlie
Tailwater Height
Target
TCU
TD
TDA
TDWR
Teleconnection
TEMP
Temperature
Temperature Inversion
Temperature Recovery
TEMPS
Terminal Aerodrome Forecast
Terrain Forced Flow
Texas Hooker
Thalweg
Theodolite
Thermal
Thermal Belt
Thermal High
Thermal Low
Thermal Wind
Thermally Driven Circulation
Thermistor
Thermocline
Thermodynamic Chart
Thermodynamic Diagram
Thermodynamics
Thermograph
Thermometer
Thermosphere
Theta-e
Theta-e Ridge
THETAE
Thin Line Echo
THK
THN
Three-Hour Rainfall Rate
Threshold Runoff
THRFTR
THRU
THRUT
THSD
Thunder
Thunderstorm
Tidal Cycle
Tidal Piling
Tidal Wave
TIDE
Tide Anomaly
Tide Prediction
Tides
TIL
Tilt
Tilt Sequence
Tilted Storm
Tilted Updraft
Tipping-Bucket Rain Gage
TKE
TMW
TNDCY
TNGT
Toe of Dam
TOP
Topography
TOR
Tornado
Tornado Family
Tornado Vortex Signature
Tornado Warning
Tornado Watch
Total-Totals Index
Towering Cumulus
TPC
Trace
Track
Trade Winds
Training
Transmitter
Transpiration
Transport Wind
Transverse Bands
Transverse Rolls
Trapper
Travel Time
Triple Doppler
Triple Point
TROF
TROP
Tropical Advisory
Tropical Analysis and Forecast Branch
Tropical Cyclone
Tropical Cyclone Associated High Winds
Tropical Cyclone Plan of the Day
Tropical Cyclone Position Estimate
Tropical Cyclone Update
Tropical Depression
Tropical Disturbance
Tropical Storm
Tropical Storm Summary
Tropical Storm Warning
Tropical Storm Watch
Tropical Wave
Tropical Weather Discussion
Tropical Weather Outlook
Tropical Weather Summary
Tropics
Tropopause
Tropopause Jet
Troposphere
Trough
TROWAL
TRPCL
TRRN
True Wind
TS
TSRA
TSTM
Tsunami
Tsunami Advisory
Tsunami Information Statement
Tsunami Warning
Tsunami Watch
Tule Fog
Turbidity
Turbulence
Turkey Tower
Turning Point
TVL
TVS
TWD
TWEB
Twilight
Twister
Two-Ribbon Flare
Type I, II, III, IV
Typhoon
Typhoon Season
U Burst
U.S. Geological Survey
UCP
UGC
UKMET
ULJ
Ultra High Frequency (UHF)
Ultraviolet Index
Ultraviolet Radiation
Umbra
Undercurrent
Underflow
Undersun
Undertow
Unimodal
Unit Control Position
Unit Hydrograph
Universal Geographic Code
Universal Time (UT)
UNSBL
Unsettled
Unstable Air
UNSTBL
Up-valley Wind
Updraft
Upper Level
Upper Level Disturbance
Upper Level System
Upper-air Weather Chart
UPR
Upslope Flow
Upslope Fog
UPSLP
Upstream
Upstream Slope
UPSTRM
Upwelling
Urban and Small Stream Flood Advisory
Urban and Small Stream Flooding
Urban Flash Flood Guidance
Urban Flooding
Urban Heat Island
UTC
UV Index
UVM
UVV
UWNDS
V Notch
VAAC
VAD
VAD Wind Profile
Vadose Zone
VALDRIFT
Valid Time
Valid Time Event Code
Valley Exit Jet
Valley Volume Effect
Valve
Vapor Pressure
Variable Wind
Variable Wind Direction
Variance
VCNTY
VCP
Veering
Veering Winds
Velocity Azimuth Display
Velocity Cross Section
Velocity Zones
Ventilation Index
Venturi Effect
Ver High Frequency (VHF)
Vertical Velocity
Vertical Wind Shear
Vertically Stacked System
Very Low Frequency (VLF)
Very Windy
VFR
VIL
VIP
Virga
Virtual Potential Temperature
Virtual Temperature
VIS
Visibility
Visibility Protection Program
Visible Satellite Imagery
Visual Spectrum
VLCTY
VLY
VMD
Volcanic Ash
Volume Scan
Volume Velocity Processing
Voluntary Observing Ship Program
Vort Max
Vortex
Vorticity
VOS
VOT
VR
VRT MOTN
VSB
VSBY
VTEC
VVP
VVSTORM
VWP
W
WAA
Wake
Wall Cloud
Warm Advection
Warm Core Low
Warm Front
Warm Occlusion
Warm Sector
Warning
Wasatch Wind
Watch
Watch Box
Watch Cancellation
Watch Redefining Statement
Watch Status Reports
Water Equivalent
Water Pollution
Water Supply Outlook
Water Table
Water Vapor Plume
Water Year
Watercourse
Watershed
Waterspout
Watt
Wave Crest
Wave Height
Wave Period
Wave Spectrum
Wave Steepness
Wave Trough
Wavelength
WAVEWATCH III
WBND
WBZ
WC/ATWC
WCM
WDIR
WDLY
WDSPRD
Weak Echo Region
Weather
Weather Forecast Office
Weatherfax
Wedge Tornado
WEFAX
Weighing-Type Precipitation Gage
Weir
WER
West African Disturbance Line
West Wall
Westerlies
Wet Bulb Zero
Wet Floodproofing
Wet Microburst
Wet-Bulb Temperature
Wetland
WFO
WFP
Whirlwind
White Light (WL)
White Light Flare
Whitecap
Widespread
Wildfire
Wildlands
Willy-Willy
Wind
Wind Advisory
Wind Chill
Wind Chill Advisory
Wind Chill Factor
Wind Chill Warning
Wind Couplet
Wind Direction
Wind Field
Wind Gust
Wind Radii
Wind Rose
Wind Shear
Wind Shear Profile
Wind Shift
Wind Shift Line
Wind Sock
Wind Speed
Wind Waves
Windward
Windy
WINT
Winter
Winter Pool
Winter Solstice
Winter Storm Warning
Winter Storm Watch
Winter Weather Advisory
Wire Weight Gage
WK
WKN
WL
WLY
WMC
WMO
WND
Wolf Number
Wrapping Gust Front
WRCC
WRM
WRMFNT
WRN
WRNG
WSFO
WSHFT
WSPD
WSR-57
WSR-74
WSR-88D
WSR-88D System
WSW
WTMP
WTR
WV
WVHT
WW
WWH
WWP
WWV
WWVH
WX
X-Band
X-Ray Background
X-Ray Burst
X-Ray Flare Class
X-Rays
XBT
XCITED
XCPT
XPC
XSEC
YDA
Year
Yellow Snow
Z
Zero Datum
ZFP
ZL
ZNS
Zonal Flow
Zone of Aeration
Zone of Saturation
Zoned Embankment Dam
ZR
Zulu (Z) Time
Zurich Sunspot Classification
Z/R Relationship
