| Term | Definition |
|
OVRNG |
Overrunning |
|
OK |
Oklahoma |
|
OMTNS |
Over mountains |
|
ONSHR |
On shore |
|
ORGPHC |
Orographic |
|
OSV |
Ocean station vessel |
|
OTLK |
Outlook |
|
OTR |
Other |
|
KFRST |
Killing frost |
|
OVRN |
Overrun |
|
OCLD |
Occlude |
|
OVTKG |
Overtaking |
|
PA |
Pennsylvania |
|
PATWAS |
Pilot’s automatic telephone weather answering service |
|
PBL |
Planetary boundary layer |
|
PCPN |
Precipitation |
|
PDMT |
Predominant |
|
PEN |
Peninsula |
|
OTRW |
Otherwise |
|
NVA |
Negative vorticity advection |
|
NNWLY |
North northwesterly |
|
NNWRN |
North northwestern |
|
NNWWD |
North northwestward |
|
NOAA |
National Oceanic and Atmospheric Administration |
|
NOPAC |
Northern Pacific |
|
NPRS |
Nonpersistent |
|
NRLY |
Nearly |
|
OFP |
Occluded frontal passage |
|
NV |
Nevada |
|
OCRD |
Occurred |
|
NWD |
Northward |
|
NWLY |
Northwesterly |
|
NWRN |
Northwestern |
|
NWS |
National Weather Service |
|
NXT |
Next |
|
OAT |
Outside air temperature |
|
PPSN |
Present position |
|
PIREP |
Pilot weather report |
|
NTFYD |
Notified |
|
RCKY |
Rocky |
|
PHYS |
Physical |
|
QN |
Question |
|
QSTNRY |
Quasistationary |
|
QTR |
Quarter |
|
R |
Rain |
|
RADAT |
Radiosonde additional data |
|
RCHD |
Reached |
|
PWB |
Pilot weather briefing |
|
RCHS |
Reaches |
|
PVLD |
Prevailed |
|
RCKYS |
Rockies |
|
RCMD |
Recommend |
|
RCMDD |
Recommended |
|
RCMDG |
Recommending |
|
RCMDS |
Recommends |
|
RCRD |
Record |
|
RCRDS |
Records |
|
RCV |
Receive |
|
RCHG |
Reaching |
|
PRIM |
Primary |
|
NNEWD |
North northeastward |
|
PL |
Ice pellets |
|
PLTO |
Plateau |
|
PPINA |
Radar weather report not available |
|
PRBL |
Probable |
|
PRECD |
Precede |
|
PRECDS |
Precedes |
|
PWR |
Power |
|
PRESRR |
Pressure rising rapidly |
|
PIBAL |
Pilot balloon observation |
|
PRIND |
Present indications are |
|
PRJMP |
Pressure jump |
|
PROB |
Probability |
|
PROG |
Forecast |
|
PRST |
Persist |
|
PRSTNT |
Persistent |
|
PSBL |
Possible |
|
PVA |
Positive vorticity advection |
|
PRESFR |
Pressure falling rapidly |
|
LTR |
Later |
|
MDT |
Moderate |
|
LST |
Local standard time |
|
LTD |
Limited |
|
LTGCC |
Lightning cloud to cloud |
|
LTGCG |
Lightning cloud to ground |
|
LTGCW |
Lightning cloud to water |
|
LTGIC |
Lightning in cloud |
|
LONG |
Longitude |
|
LTLCG |
Little change |
|
LO |
Low |
|
LTST |
Latest |
|
LYR |
Layer |
|
MA |
Massachusetts |
|
MCD |
Mesoscale discussion |
|
MD |
Maryland |
|
MDFY |
Modify |
|
MDFYD |
Modified |
|
NNW |
North northwest |
|
LTL |
Little |
|
LFTG |
Lifting |
|
SYNOP |
Synoptic |
|
KT |
Knots |
|
KY |
Kentucky |
|
LA |
Louisiana |
|
LAT |
Latitude |
|
LAWRS |
Limited aviation weather reporting station |
|
LCL |
Local |
|
LRG |
Large |
|
LCTMP |
Little change in temperature |
|
MED |
Medium |
|
LGT |
Light |
|
LGTR |
Lighter |
|
LI |
Lifted Index |
|
LK |
Lake |
|
LKS |
Lakes |
|
LLWAS |
Low level wind shear alert system |
|
LMTD |
Limited |
|
LMTG |
Limiting |
|
LCLY |
Locally |
|
NEW ENG |
New England |
|
MDLS |
Models |
|
NAV |
Navigation |
|
NBND |
Northbound |
|
NC |
North Carolina |
|
NCEP |
National Center of Environmental |
|
NCO |
NCEP Central Operations |
|
NCWX |
No change in weather |
|
NAB |
Not above |
|
NEB |
Nebraska |
|
N |
North |
|
NFLD |
Newfoundland |
|
NGT |
Night |
|
NH |
New Hampshire |
|
NJ |
New Jersey |
|
NLT |
Not later than |
|
NMRS |
Numerous |
|
NNERN |
North northeastern |
|
RCVS |
Receives |
|
ND |
North Dakota |
|
MOV |
Move |
|
MEGG |
Merging |
|
MESO |
Mesoscale |
|
METAR |
Aviation routine weather report |
|
MEX |
Mexico |
|
MHKVLY |
Mohawk Valley |
|
MI |
Michigan |
|
MIDN |
Midnight |
|
NAT |
North Atlantic |
|
MOGR |
Moderate or greater |
|
NNNN |
End of message |
|
MOVD |
Moved |
|
MOVS |
Moves |
|
MPH |
Miles per hour |
|
MRGL |
Marginal |
|
MRNG |
Morning |
|
MSL |
Mean sea level |
|
MSTLY |
Mostly |
|
MWO |
Meteorological Watch Office |
|
MN |
Minnesota |
|
SMRY |
Summary |
|
SRN |
Southern |
|
SIMUL |
Simultaneous |
|
SKC |
Sky clear |
|
SLGT |
Slight |
|
SLOLY |
Slowly |
|
SLPG |
Sloping |
|
SLY |
Southerly |
|
SIG |
Signature |
|
SMLR |
Smaller |
|
SHUD |
Should |
|
SNBNK |
Snowbank |
|
SNOINCR |
Snow increase |
|
SOP |
Standard operating procedure |
|
SPKL |
Sprinkle |
|
SPLNS |
Southern Plains |
|
SPRDG |
Spreading |
|
SQ |
Squall |
|
SASK |
Saskatchewan |
|
SM |
Statute mile |
|
SD |
South Dakota |
|
RCVD |
Received |
|
SBND |
Southbound |
|
SBSD |
Subside |
|
SBSDD |
Subsided |
|
SBSDS |
Subsides |
|
SC |
South Carolina or stratocumulus |
|
SCNDRY |
Secondary |
|
SIGMET |
Significant meteorological information |
|
SCTD |
Scattered |
|
SRND |
Surround |
|
SELY |
Southeasterly |
|
SEPN |
Separation |
|
SEV |
Severe |
|
SEWD |
Southeastward |
|
SFC |
Surface |
|
SGFNTLY |
Significantly |
|
SHFT |
Shift |
|
SHFTD |
Shifted |
|
SCSL |
Stratocumulus standing lenticular |
|
SVG |
Serving |
|
SQLN |
Squall line |
|
SUGG |
Suggesting |
|
SUGS |
Suggests |
|
SUP |
Supply |
|
SUPG |
Supplying |
|
SUPR |
Superior |
|
SUPSD |
Supersede |
|
SUFLY |
Sufficiently |
|
SUPSDS |
Supersedes |
|
SUF |
Sufficient |
|
SVRL |
Several |
|
SW |
Southwest |
|
SWD |
Southward |
|
SWLY |
Southwesterly |
|
SWRN |
Southwestern |
|
SWWD |
Southwestward |
|
SX |
Stability index |
|
AAWU |
Alaskan Aviation Weather Unit |
|
SUPSDG |
Superseding |
|
STGLY |
Strongly |
|
SSE |
South southeast |
|
SSWRN |
South southwestern |
|
SSWWD |
South southwestward |
|
ST |
Stratus |
|
STAGN |
Stagnation |
|
STBLTY |
Stability |
|
STDY |
Steady |
|
SUG |
Suggest |
|
STG |
Strong |
|
SAB |
Satellite Analysis Branch |
|
STGR |
Stronger |
|
STGST |
Strongest |
|
STM |
Storm |
|
STMS |
Storms |
|
STN |
Station |
|
STNRY |
Stationary |
|
SUB |
Substitute |
|
SUBTRPCL |
Subtropical |
|
STFR |
Stratus fractus |
|
RMK |
Remark |
|
ROTG |
Rotating |
|
RGLR |
Regular |
|
RGN |
Region |
|
RGNS |
Regions |
|
RGT |
Right |
|
RH |
Relative humidity |
|
RI |
Rhode Island |
|
RGD |
Ragged |
|
RLTV |
Relative |
|
RESTR |
Restrict |
|
RMN |
Remain |
|
RMND |
Remained |
|
RMNDR |
Remainder |
|
RMNG |
Remaining |
|
RMNS |
Remains |
|
RNFL |
Rainfall |
|
ROT |
Rotate |
|
SATFY |
Satisfactory |
|
RLBL |
Reliable |
|
REPL |
Replace |
|
JCTN |
Junction |
|
RDC |
Reduce |
|
RDGG |
Ridging |
|
RDVLP |
Redevelop |
|
RDVLPG |
Redeveloping |
|
RDVLPMT |
Redevelopment |
|
RE |
Regard |
|
RGL |
Regional model |
|
REF |
Reference |
|
ROTS |
Rotates |
|
REPLD |
Replaced |
|
REPLG |
Replacing |
|
REPLS |
Replaces |
|
REQ |
Request |
|
REQS |
Requests |
|
REQSTD |
Requested |
|
RES |
Reserve |
|
RESP |
Response |
|
RECON |
Reconnaissance |
|
RUF |
Rough |
|
ROTD |
Rotated |
|
RSTR |
Restrict |
|
RSTRD |
Restricted |
|
RSTRG |
Restricting |
|
RSTRS |
Restricts |
|
RTRN |
Return |
|
RTRND |
Returned |
|
RSNG |
Reasoning |
|
RTRNS |
Returns |
|
RSN |
Reason |
|
RUFLY |
Roughly |
|
RVS |
Revise |
|
RVSD |
Revised |
|
RVSG |
Revising |
|
RVSS |
Revises |
|
RWY |
Runway |
|
S |
South |
|
S RLTVLY |
Relatively |
|
RTRNG |
Returning |
|
RPRTS |
Reports |
|
RPD |
Rapid |
|
RPDLY |
Rapidly |
|
RPLC |
Replace |
|
RPLCD |
Replaced |
|
RPLCG |
Replacing |
|
RPLCS |
Replaces |
|
RPRT |
Report |
|
RSNS |
Reasons |
|
RPRTG |
Reporting |
|
RCVG |
Receiving |
|
RPT |
Repeat |
|
RPTG |
Repeating |
|
RPTS |
Repeats |
|
RQR |
Require |
|
RQRD |
Required |
|
RQRG |
Requiring |
|
RQRS |
Requires |
|
RSG |
Rising |
|
RPRTD |
Reported |
|
CLDS |
Clouds |
|
CHGD |
Changed |
|
CHGG |
Changing |
|
CHGS |
Changes |
|
CHSPK |
Chesapeake |
|
CI |
Cirrus |
|
CIG |
Ceiling |
|
CIGS |
Ceilings |
|
KLYR |
Smoke layer aloft |
|
CLDNS |
Cloudiness |
|
CHC |
Chance |
|
CLKWS |
Clockwise |
|
CLR |
Clear |
|
CLRG |
Clearing |
|
CLRS |
Clears |
|
CMPLX |
Complex |
|
CNCL |
Cancel |
|
CNCLD |
Canceled |
|
CLD |
Cloud |
|
CASCDS |
Cascades |
|
BRKS |
Breaks |
|
BRKSHR |
Berkshire |
|
BRM |
Barometer |
|
BS |
Blowing snow |
|
BYD |
Beyond |
|
C |
Celsius |
|
CA |
California |
|
CHG |
Change |
|
CARIB |
Caribbean |
|
CHCS |
Chances |
|
CB |
Cumulonimbus |
|
CC |
Cirrocumulus |
|
CCLDS |
Clear of clouds |
|
CCLKWS |
Counterclockwise |
|
CCSL |
Cirrocumulus standing lenticular |
|
CDFNT |
Cold front |
|
CFP |
Cold front passage |
|
CNDN |
Canadian |
|
CAA |
Cold air advection |
|
DEGS |
Degrees |
|
CNCLG |
Canceling |
|
CVRD |
Covered |
|
CWSU |
Center Weather Service Units |
|
CYC |
Cyclonic |
|
DABRK |
Daybreak |
|
DC |
District of Columbia |
|
DCR |
Decrease |
|
CUFRA |
Cumulus fractus |
|
DEG |
Degree |
|
CSTL |
Coastal |
|
DELMARVA |
Delaware Maryland Virginia |
|
DFCLTY |
Difficulty |
|
DFUS |
Diffuse |
|
DGNL |
Diagonal |
|
DISC |
Discontinue |
|
DLAD |
Delayed |
|
DLTD |
Deleted |
|
DMG |
Damage |
|
DCRS |
Decreases |
|
CONFDC |
Confidence |
|
BRK |
Break |
|
CNTR |
Center |
|
CNTRD |
Centered |
|
CNTRL |
Central |
|
CNVGNC |
Convergence |
|
CNVTN |
Convection |
|
CO |
Colorado |
|
CVR |
Cover |
|
COMPRS |
Compares |
|
CNCLS |
Cancels |
|
CONTDVD |
Continental Divide |
|
CONTG |
Continuing |
|
CONTS |
Continues |
|
CONUS |
Continental U.S. |
|
COORD |
Coordinate |
|
CRLC |
Circulate |
|
CS |
Cirrostratus |
|
CST |
Coast |
|
COMPRD |
Compared |
|
ASSOCD |
Associated |
|
AWT |
Awaiting |
|
AL |
Alabama |
|
ALG |
Along |
|
AMDT |
Amendment |
|
AMP |
Amplify |
|
AMS |
Air mass |
|
AP |
Anomalous Propagation |
|
AGRD |
Agreed |
|
ASAP |
As soon as possible |
|
AGL |
Above ground level |
|
ASSOCN |
Association |
|
ATLC |
Atlantic |
|
ATTM |
At this time |
|
ATTN |
Attention |
|
AVBL |
Available |
|
AVG |
Average |
|
AVN |
Aviation model |
|
BRKHIC |
Breaks in higher clouds |
|
APPRS |
Appears |
|
ADQTLY |
Adequately |
|
ABNDT |
Abundant |
|
ABV |
Above |
|
AC |
Convective outlook or altocumulus |
|
ACCUM |
Accumulate |
|
ACLT |
Accelerate |
|
ACSL |
Altocumulus standing lenticular |
|
ACTVTY |
Activity |
|
AHD |
Ahead |
|
ADQT |
Adequate |
|
AZM |
Azimuth |
|
ADVCTD |
Advected |
|
ADVN |
Advance |
|
ADVNG |
Advancing |
|