| $ |
maintenance check indicator |
| - |
light intensity |
| + |
heavy intensity |
| / |
indicator that visual range data follows; separator between temperature and dew point data. |
| ACC |
altocumulus castellanus |
| ACFT MSHP |
aircraft mishap |
| ACSL |
altocumulus standing lenticular cloud |
| ALP |
airport location point |
| AO1 |
automated station without precipitation discriminator |
| AO2 |
automated station with precipitation discriminator |
| APRNT |
apparent |
| APRX |
approximately |
| ATCT |
airport traffic control tower |
| AUTO |
automated report |
| B |
began |
| BC |
patches |
| BKN |
broken |
| BL |
blowing |
| BR |
mist |
| C |
center (with reference to runway designation) |
| CA |
cloud-air lightning |
| CB |
cumulonimbus cloud |
| CBMAM |
cumulonimbus mammatus cloud |
| CC |
cloud-cloud lightning |
| CCSL |
cirrocumulus standing lenticular cloud |
| CG |
cloud-ground lightning |
| CHI |
cloud-height indicator |
| CHINO |
sky condition at secondary location not available |
| CIG |
ceiling |
| CLR |
clear |
| CONS |
continuous |
| COR |
correction to a previously disseminated report |
| DOC |
Department of Commerce |
| DOD |
Department of Defense |
| DOT |
Department of Transportation |
| DR |
low drifting |
| DS |
duststorm |
| DSNT |
distant |
| DU |
widespread dust |
| DZ |
drizzle |
| E |
east, ended |
| FAA |
Federal Aviation Administration |
| FC |
funnel cloud |
| FEW |
few clouds |
| FG |
fog |
| FIBI |
filed but impracticable to transmit |
| FIRST |
first observation after a break in coverage at manual station |
| FROPA |
frontal passage |
| FRQ |
frequent |
| FT |
feet |
| FU |
smoke |
| FZ |
freezing |
| FZRANO |
freezing rain sensor not available |
| G |
gust |
| GR |
hail |
| GS |
small hail and/or snow pellets |
| HZ |
haze |
| IC |
ice crystals, in-cloud lightning |
| ICAO |
International Civil Aviation Organization |
| KT |
knots |
| L |
left (with reference to runway designation) |
| LAST |
last observation before a break in coverage at a manual station |
| LST |
Local Standard Time |
| LTG |
lightning |
| LWR |
lower |
| M |
minus, less than |
| METAR |
aviation routine weather report |
| MI |
shallow |
| MOV |
moved/moving/movement |
| MT |
mountains |
| N |
north |
| N/A |
not applicable |
| NCDC |
National Climatic Data Center |
| NE |
northeast |
| NOS |
National Ocean Service |
| NOSPECI |
no SPECI reports are taken at the station |
| NW |
northwest |
| NWS |
National Weather Service |
| OCNL |
occasional |
| OFCM |
Office of the Federal Coordinator for Meteorology |
| OVC |
overcast |
| OHD |
overhead |
| P |
greater than |
| PE |
ice pellets |
| PK WND |
peak wind |
| PNO |
precipitation amount not available |
| PO |
dust/sand whirls (dust devils) |
| PR |
partial |
| PRESFR |
pressure falling rapidly |
| PRESRR |
pressure rising rapidly |
| PWINO |
precipitation identifier sensor not available |
| PY |
spray |
| R |
right (with reference to runway designation) |
| RA |
rain |
| RVR |
Runway Visual Range |
| RVRNO |
RVR system not available |
| RWY |
runway |
| S |
south |
| SA |
sand |
| SCSL |
stratocumulus standing lenticular cloud |
| SCT |
scattered |
| SE |
southeast |
| SFC |
surface |
| SG |
snow grains |
| SH |
shower(s) |
| SKC |
sky clear |
| SLP |
sea-level pressure |
| SLPNO |
sea-level pressure not available |
| SM |
statute miles |
| SN |
snow |
| SNINCR |
snow increasing rapidly |
| SPECI |
an unscheduled report taken when certain criteria have been met |
| SQ |
squalls |
| SS |
sandstorm |
| SW |
southwest |
| TCU |
towering cumulus |
| TS |
thunderstorm |
| TSNO |
thunderstorm information not available |
| TWR |
tower |
| UP |
unknown precipitation |
| UTC |
Coordinated Universal Time |
| V |
variable |
| VA |
volcanic ash |
| VC |
in the vicinity |
| VIS |
visibility |
| VISNO |
visibility at secondary location not available |
| VRB |
variable |
| VV |
vertical visibility |
| W |
west |
| WG/SO |
Working Group for Surface Observations |
| WMO |
World Meteorological Organization |
| WND |
wind |
| WSHFT |
wind shift |
| Z |
zulu, i.e., Coordinated Universal Time |