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263 Cards in this Set
- Front
- Back
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00000KT
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calm wind [wind speed less than one knot]
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$
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indicates maintenance needed on ASOS system
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light intensity
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A2985
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"altimeter two niner eight five"
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ACC
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altocumulus castellanus
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ACFT MSHP
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aircraft mishap
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ACSL
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altocumulus standing lenticular cloud
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AO1
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automated station without precipitation discriminator
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AO2
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automated station with precipitation discriminator
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ALP
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airport location point
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AMD
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TAF AMD
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APRNT
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apparent
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APRX
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approximately
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ASOS
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automated surface observing system
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AUTO
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fully automated report
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B
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began
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BC
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patches [spoken as "patchy"
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BCFG
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patchy fog [patches of fog]
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BECMG
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"a gradual change"
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BKN
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broken [5/8 to 7/8 sky cover]
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BKN000
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between 5/8 to 7/8 of the sky is obscured [spoken as "broken clouds less than five zero"]
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BKN030
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"ceiling three thousand broken"
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BKN040CB
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"ceiling four thousand broken
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BKN050TCU
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"ceiling five thousand broken
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BKN030 V OVC
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"broken layer at three thousand variable to overcast"
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BL
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blowing [a descriptor]
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BLDU
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blowing dust
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BLPY
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blowing spray
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BLSA
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blowing sand
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BLSN
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blowing snow
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BR
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mist [visibility 5/8SM to 6SM]
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BR HZ
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mist haze [visibility is 5/8 SM or more]
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C
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center [referring to runway designation]
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CA
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cloud to air lightning
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CAVOK
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ceiling and visibility OK [not used in U.S.]
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CB
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cumulonimbus cloud
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CBMAM
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cumulonimbus mammatus cloud
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CB S MOV E
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"cumulonimbus South moving East"
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CC
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cloud to cloud lightning
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CCSL
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cirrocumulus standing lenticular cloud
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CCSL OVR MT E
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"standing lenticular cirrocumulus over the mountain[s] East"
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CG
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cloud to ground lightning
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CHI
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cloud height indicator
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CHINO
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sky condition at secondary location not available
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CIG
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ceiling
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CIG 004V008
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"ceiling variable between four hundred and eight hundred"
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CIG 010 RY20
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"ceiling one thousand at runway two zero"
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CLR
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clear [0 or 0 below 12
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CONS
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continuous [lightning
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COR
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correction to a previously disseminated observation/forecast48
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DR
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low drifting [a descriptor]
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DRDU
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low drifting dust less than 6 ft high
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DRSA
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low drifting sand less than 6 ft high
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DRSN
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low drifting snow less than 6 ft high
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DS
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duststorm
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DSIPTG
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dissipating
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DSNT
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distant
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DU
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widespread dust
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DVR
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dispatch visual range
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DZ
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drizzle
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DZB
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drizzle began
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DZE
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drizzle ended
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E
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East or ended
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FC
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funnel cloud
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+FC
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tornado or waterspout
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FEW
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few clouds [> 0 but £ 2/8 sky cover]
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FEW000
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from 0 to 2/8 of the sky is obscured [spoken as "few clouds less than five zero"]
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FEW040
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"few clouds at four thousand"
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FEW050CB
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"few clouds at five thousand
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FEW060TCU
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"few clouds at six thousand. towering cumulus"
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FG
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fog [visibility less than 5/8 statute mile]
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FG BKN000
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"fog obscuring five to seven
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FG FEW000
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"fog obscuring zero to two
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FG SCT000
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"fog obscuring three to four
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FIBI
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filed but impractical to transmit
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FM
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"after"
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FRQ
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frequent [lightning
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FROPA
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frontal passage
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FT
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feet
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FU
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smoke
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FU SCT010
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"scattered layer of smoke aloft at one thousand"
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FZ
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freezing [a descriptor]
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FZDZ
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freezing drizzle
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FZDZB
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freezing drizzle began
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FZDZE
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freezing drizzle ended
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FZFG
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freezing fog [ice fog]
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FZRA
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freezing rain
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FZRAB
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freezing rain began
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FZRAE
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freezing rain ended
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FZRANO
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freezing rain sensor not available
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G
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gust
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GR
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hail
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GRB
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hail began
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GRE
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hail ended
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GR 1 1/2
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"hailstones one and one
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GS
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small hail and/or snow pellets
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GSB
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small hail or snow pellets began
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GSE
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small hail or snow pellets ended
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HLSTO
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hailstone
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HZ
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haze
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IC
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ice crystals or in
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INCRG
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increasing
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INTMT
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intermittent
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KT
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knot[s]
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L
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left [referring to runway designation]
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LTG
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lightning
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LWR
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lower
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M
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minus
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M1/4SM
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"visibility less than one quarter"
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M10/M12
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"temperature minus one zero
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M15/ "temperature minus one five
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dew point missing"
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M1000FT
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"R
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max
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maximum
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METAR
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routine weather report provided at fixed intervals
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MI
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shallow [a descriptor]
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MIFG
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shallow fog
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min
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minimum
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MOV
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moved/moving/movement
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MT
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mountains
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N
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North
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N/A
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not applicable
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NCDC
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National Climatic Data Center
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NE
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Northeast
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NIL
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part
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NIL AMD SKED AFT [closing time]Z
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appears at end of part
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NOSPECI
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no SPECI reports are taken at this station
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NSW
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no significant weather
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NW
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Northwest
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00000KT
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"wind calm"
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OCNL
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occasional [lightning
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OHD
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overhead
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OVC
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overcast [8/8 sky cover]
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OVC008
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"ceiling eight hundred overcast"
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OVC020CB
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"ceiling two thousand overcast
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OVC010TCU
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"ceiling one thousand overcast
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P
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"more than" indicated greater than the highest reportable value
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P6SM
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"visibility more than six" [statute miles]
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P6000FT
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"more than six thousand" [RVR]
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PCPN
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precipitation
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PK WND
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peak wind
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PK WND 27050/25
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"peak wind two seven zero at five zero occurred at two five past the hour"
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PK WND 32045/1735
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peak wind three two zero at four five occurred at one seven three five"
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PL
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ice pellets
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PLB
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ice pellets began
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PLE
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ice pellets ended
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PNO
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precipitation amount not available
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PO
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dust/sand whirls [dust devils] PR
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PRFG
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partial fog
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PRES
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pressure
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PRESFR
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pressure falling rapidly
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PRESRR
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pressure rising rapidly
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PROB30
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"slight chance" [10% to 29% probability]
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PROB40
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"chance" [30% to 50% probability]
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PWINO
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precipitation identifier sensor not available
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PY
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spray
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R
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right [referring to runway designation]
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RA
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rain
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+RA
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heavy rain
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RA
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RAB
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rain began
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RAE
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rain ended
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RA FG
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rain
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RAPL
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rain
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RASNDZ
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rain
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RTD
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Routine Delayed [late] forecast
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RV
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reportable value
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RVR
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Runway Visual Range
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;RVRNO
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RVR system values not available
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RY
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runway
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S
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South
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SA
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sand
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SCSL
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stratocumulus standing lenticular cloud
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SCT
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scattered [3/8 to 4/8 sky cover]
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SCT000
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between 3/8 & 4/8 of the sky is obscured [spoken as "scattered clouds less than five zero"]
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SCT V BKN
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"scattered layer variable to broken"
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SCT010 V BKN
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"scattered layer at one thousand variable to broken"
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SCT035
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"three thousand five hundred scattered"
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SE
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Southeast
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SFC
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surface
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SFC VIS 1
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"surface visibility one"
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SG
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snow grains
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SGB
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snow grains began
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SGE
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snow grains ended
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SH
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shower[s][a descriptor]
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SHGR
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hail showers
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SHGS
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small hail shower or snow pellet showers
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SHPL
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ice pellet showers
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SHRA
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rain showers
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SHSN
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snow showers
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SKC
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sky clear [reported by manual stations]
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SLP
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sea
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SLP142
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"sea
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SLPNO
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sea
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SM
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statute miles
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SN
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snow
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+SN
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heavy snow
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SN
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SNB
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snow began
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SNE
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snow ended
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SNGS
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snow
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SNINCR
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snow increasing rapidly
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SPECI
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an unscheduled weather report when certain criteria have been met
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SQ
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squall[s]
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SS
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sandstorm
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STN
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station
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SW
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Southwest
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TAF
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Routine Aviation Terminal Forecast
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TCU
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towering cumulus
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TCU OHD
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"towering cumulus overhead"
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TEMPO
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an "occasional" condition in a forecast [see page 55 for a complete explanation]
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TS
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thunderstorm [implies showery precipitation
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a descriptor]12
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25
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TSB
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thunderstorm began
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TSE
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thunderstorm ended
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TSGR
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thunderstorm
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TSGS
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thunderstorm
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TSNO
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thunderstorm information not available
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TSPL
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thunderstorm
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TSRA
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thunderstorm
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TSSN
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thunderstorm
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TWR
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tower
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TWR VIS 2
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"tower visibility two"
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UNKN
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unknown
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UP
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unknown precipitation
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UPB
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unknown precipitation began
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UPE
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unknown precipitation ended
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UTC
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Coordinated Universal Time
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V
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variable
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VA
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volcanic ash
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VC
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in the vicinity
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VCBLDU
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blowing dust in the vicinity
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VCBLSA
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blowing sand in the vicinity
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VCBLSN
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blowing snow in the vicinity
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VCDS
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duststorm in the vicinity
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VCFC
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funnel cloud in the vicinity
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VCFG
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fog in the vicinity
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VCPO
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dust devils in the vicinity
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VCSH
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showers in the vicinity
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VCSS
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sandstorm in the vicinity
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VCTS
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thunderstorms in the vicinity
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VIRGA
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precipitation that is observed but not reaching the ground
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VIS
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visibility
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VIS2V3
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"visibility variable between two and three"
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VIS E 2
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"visibility East two"
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VIS N 1
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"visibility North one"
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VIS S 3
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"visibility South three"
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VIS W 4
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"visilility West four"
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VISNO
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visibility at secondary location not available
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VIS 1 RY22
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"visibility one
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VR
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visual range
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VRB
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variable
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VRB03KT
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"wind variable at three"
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VV
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indefinite ceiling [vertical visibility]
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VV003
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"indefinite ceiling 300" [vertical visibility 300 feet]
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VV///
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indefinite ceiling height not available
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W
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West
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WS
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windshear
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WS020/17040KT
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"Low level wind shear at two thousand
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WND
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wind
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WSHFT
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windshift
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WSHFT 35
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"windshift at three five"
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WSHFT 20 FROPA
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"windshift at two zero due to frontal passage"
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Z
|
zulu [Coordinated Universal Time]
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