|
$ |
ASOS maintenance check indicator |
|
- |
light intensity |
|
+ |
heavy intensity |
|
/ |
indicator that runway visual range data follows; separator
between temperature and dew point data
|
|
ACFT MSHP |
aircraft mishap |
|
AFSS |
Automated Flight Service Station |
|
ALDARS |
Automated Lightning Detection and Reporting System |
|
AO1 |
automated station without precipitation discriminator |
|
AO2 |
automated station with precipitation discriminator |
|
AOMC |
ASOS Operations and Monitoring Center |
|
ASI |
altimeter setting indicator |
|
ASOS |
Automated Surface Observing System |
|
AT AP |
at airport |
|
ATCS |
Air Traffic Control Specialist |
|
ATCT |
Airport Traffic Control Tower |
|
AUTO |
automated report |
|
AWOS |
Automated Weather Observing System |
|
B |
began |
|
BC |
patches |
|
BKN |
broken |
|
BL |
blowing |
|
BR |
mist |
|
C |
Celsius, center (with reference to runway designation) |
|
CA |
cloud-air lightning |
|
CB |
cumulonimbus cloud |
|
CC |
cloud-cloud lightning |
|
CG |
cloud-ground lightning |
|
CHI |
cloud-height indicator |
|
CHINO |
sky condition at secondary location not available |
|
CIG |
ceiling |
|
CLR |
no clouds detected at, or below, design limit of ceilometer
(automated system) |
|
CONS |
continuous |
|
COR |
correction to a previously disseminated report |
|
DA |
density altitude |
|
DASI |
Digital Altimeter Setting Indicator |
|
DIR |
direction |
|
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 |
|
F |
Fahrenheit |
|
FAA |
Federal Aviation Administration |
|
FBO |
fixed base operator |
|
FC |
funnel cloud |
|
FCM-H1 |
Federal Meteorological Handbook No.1, Surface Weather
Observations and Reports |
|
FEW |
few clouds |
|
FG |
fog |
|
FIBI |
filed but impracticable to transmit |
|
FROPA |
frontal passage |
|
FRQ |
frequent |
|
FSS |
Flight Service Station |
|
FT |
feet |
|
FU |
smoke |
|
FZ |
freezing |
|
FZRA |
freezing rain |
|
FZRANO |
freezing rain sensor not available |
|
G |
gust |
|
GR |
hail |
|
GS |
small hail and/or snow pellets |
|
H |
hour |
|
Ha |
field elevation |
|
Hp |
station elevation |
|
hPa |
Hectopascal |
|
HZ |
haze |
|
IC |
ice crystals, in-cloud lightning |
|
ICAO |
International Civil Aviation Organization |
|
KT |
knot |
|
L |
left (with reference to runway designation) |
|
LAST |
last observation before a break in coverage at a manual station |
|
LAWRS |
Limited Aviation Weather Reporting Station |
|
LLWAS |
Low Level Wind Shear Alert System |
|
LOC |
location |
|
LST |
Local Standard Time |
|
LTG |
lightning |
|
LWR |
lower |
|
M |
minus, less than, missing |
|
METAR |
aviation routine weather report |
|
MF1M-10C |
Meteorological Form 1M-10C |
|
MI |
shallow |
|
MID |
midnight |
|
MOV |
moved/moving/movement |
|
MSL |
mean sea level |
|
MT |
mountains |
|
N |
north |
|
NA |
not applicable |
|
NCDC |
National Climatic Data Center |
|
NE |
northeast |
|
NFCT |
Non-Federal control tower |
|
NF-OBS |
Non-Federal Observer/Observation |
|
NGRVR |
New Generation Runway Visual Range |
|
NOAA |
National Oceanic and Atmospheric Administration |
|
NOSPECI |
no SPECI reports are taken at the station |
|
NOTAM |
Notice to Airmen |
|
NW |
northwest |
|
NWS |
National Weather Service |
|
OBS |
observer, observation |
|
OCNL |
occasional |
|
OFCM |
Office of the Federal Coordinator for Meteorology |
|
OHD |
overhead |
|
OID |
operator interface device |
|
OT |
operator terminal |
|
OVC |
overcast |
|
P |
greater than |
|
PK WND |
peak wind |
|
PL |
ice pellets |
|
PNO |
precipitation amount not available |
|
PO |
dust/sand whirls (dust devils) |
|
PR |
partial |
|
PRESFR |
pressure falling rapidly |
|
PRESRR |
pressure rising rapidly |
|
PREWX |
present weather |
|
PWINO |
present weather information not available (automated system) |
|
PY |
spray |
|
R |
right (with reference to runway designation) |
|
RA |
rain |
|
RMK |
remark |
|
RVR |
Runway Visual Range |
|
RWY |
runway |
|
S |
south |
|
SA |
sand |
|
SAWRS |
Supplementary Aviation Weather Reporting Station |
|
SCT |
scattered |
|
SE |
southeast |
|
SFC |
surface |
|
SG |
snow grains |
|
SH |
shower(s) |
|
SKC |
sky clear (manual observation) |
|
SLP |
sea-level pressure |
|
SLPNO |
sea-level pressure not available |
|
SM |
statute miles |
|
SN |
snow |
|
SNINCR |
snow increasing rapidly |
|
SPECI |
aviation selected special weather report |
|
SQ |
squalls |
|
SS |
sandstorm |
|
SW |
southwest |
|
TAF |
aerodrome forecast (terminal) |
|
TCU |
towering cumulus |
|
TRACON |
Terminal Radar Approach Control |
|
TS |
thunderstorm |
|
TSNO |
thunderstorm information not available |
|
TWR |
tower |
|
UP |
unknown precipitation |
|
USCG |
United States Coast Guard |
|
UTC |
Coordinated Universal Time |
|
V |
variable |
|
VA |
volcanic ash |
|
VC |
in the vicinity |
|
VDU |
Video Display Unit |
|
VFR |
visual flight rules |
|
VIS |
visibility |
|
VISNO |
visibility at secondary location not available |
|
VRB |
variable |
|
VV |
vertical visibility |
|
W |
west |
|
WMO |
World Meteorological Organization |
|
WND |
wind |
|
WSHFT |
wind shift |
|
WSOH |
NWS Observing Handbook |
|
Z |
zulu, i.e., Coordinated Universal Time |