Western Regional Climate Center
Surface airways data (Undecoded)
Example
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WHERE : Station Code (KPIT)
WHEN : 201955 20th day of the month at 1955 GMT
WIND : 220015G25KT - 220 degrees at 15 knots gusting to 25 knots
Knot * 1.15 = m/p/h
COR = Corrected Data
VISIBILITY: Statute Miles - good visibility is 10SM.
SIGNIFICANT WEATHER: TS = thunderstorm
-RA = light rain
RA = moderate rain
+RA = heavy rain
SHRA = rain shower
FG = fog
HZ = haze
BR = mist
SN = snow
SKY CONDITION : OVC010 = overcast at 1000 feet above ground level
BKN250 = broken at 25000 feet
SCT = scattered
FEW = few
CLR = clear
SKC = clear
TEMPERATURE/DEW POINT : 18/16 - temp is 18 degrees Celsius/dew point is
16 degrees Celsius
M= Minus
ALTIMETER: A2992 inches of mercury (29.92) and preceded by an "A"
RMK: Sea Level Pressure (SLP) is reported by the last three digits in
milibars. (ex - 1013 is reported as SLP013).
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SAMPLE:
us.sao.000101:KONT 010003Z 32009KT 8SM -RA BKN014 BKN027 OVC034 09/M02 A3002
us.sao.000101 = us surface airways, year (00), month (01), day (01)
KONT = station identifier
010003Z = date (01), time (0003Z = 0003 Greenwich Mean Time).
32009KT = winds from 320 degrees at 9 knots
8SM = 8 statute miles visibility
-RA = light rain
BKN014 = broken clouds at 1400 feet above ground level
BKN027 = " " " 2700 " " " "
OVC034 = overcast at 3400 feet above ground level.
09/M02 = temperature (9 degrees C)/dew point temp (-2 deg C).
A3002 = altimeter setting (sea level pressure), 30.02 inches of mercury.
______________________________________________________________________________
ASTORIA AIRPORT, OR (KAST)
12 DECEMBER 2001 (GMT).
HOURLY SURFACE AIRWAYS OBSERVATIONS.
ALL DATES AND TIMES IN GREENWICH MEAN TIME (GMT).
SUBTRACT 8 HOURS TO GET PACIFIC STANDARD TIME.
DATE &
DATE STN TIME(GMT)
us.sao.011212:KAST 112355Z AUTO 00000KT 10SM CLR 07/07 A2988 RMK AO2 SLP119
us.sao.011212:KAST 120055Z AUTO 10005KT 4SM BR FEW002 BKN015 06/06 A2992 RMK AO2
us.sao.011212:KAST 120155Z AUTO 09004KT 10SM OVC019 07/06 A2995 RMK AO2 SLP143
us.sao.011212:KAST 120226Z AUTO 16004KT 1 1/4SM BR BKN023 06/06 A2998 RMK
us.sao.011212:KAST 120234Z AUTO 18003KT 3/4SM BR BKN023 05/05 A2998 RMK AO2=
us.sao.011212:KAST 120255Z AUTO 14004KT 1/4SM FG BKN023 04/04 A2999 RMK AO2
us.sao.011212:KAST 120303Z AUTO 14004KT 3/4SM BR FEW001 BKN023 05/05 A2999 RMK
us.sao.011212:KAST 120320Z AUTO 14004KT 1 1/2SM BR FEW001 BKN023 04/04 A2999 RMK
us.sao.011212:KAST 120323Z AUTO 14004KT 2SM BR FEW001 SCT023 04/04 A2999 RMK AO2
us.sao.011212:KAST 120331Z AUTO 13003KT 7SM FEW001 04/04 A2999 RMK AO2 VIS 3/4
us.sao.011212:KAST 120338Z AUTO 13004KT 1 3/4SM BR FEW023 03/03 A2999 RMK AO2
us.sao.011212:KAST 120340Z AUTO 12004KT 1 1/4SM BR FEW001 04/04 A2999 RMK
us.sao.011212:KAST 120343Z AUTO 12004KT 3/4SM BR VV001 03/03 A2999 RMK AO2=
us.sao.011212:KAST 120355Z AUTO 14004KT 3/4SM BR VV001 03/03 A3000 RMK AO2
us.sao.011212:KAST 120403Z AUTO 14004KT 1 1/4SM BR SCT001 04/04 A3000 RMK
us.sao.011212:KAST 120409Z AUTO 14003KT 3/4SM BR VV001 03/03 A3000 RMK AO2=
us.sao.011212:KAST 120424Z AUTO 13004KT 1 1/4SM BR FEW001 03/03 A3001 RMK AO2
us.sao.011212:KAST 120428Z AUTO 13004KT 2SM BR FEW001 03/03 A3001 RMK AO2 VIS
us.sao.011212:KAST 120436Z AUTO 10005KT 6SM BR FEW001 03/03 A3001 RMK AO2 VIS
us.sao.011212:KAST 120455Z AUTO 00000KT 7SM CLR 04/04 A3003 RMK AO2 VIS 1/2 RWY
us.sao.011212:KAST 120528Z AUTO 12003KT 1 3/4SM BR CLR 03/03 A3005 RMK AO2 VIS
us.sao.011212:KAST 120533Z AUTO 12003KT 3/4SM BR CLR 03/03 A3005 RMK AO2=
us.sao.011212:KAST 120545Z AUTO 14004KT 3/4SM BR VV001 02/02 A3005 RMK AO2=
us.sao.011212:KAST 120555Z AUTO 14004KT 1/4SM FG VV001 02/02 A3005 RMK AO2
us.sao.011212:KAST 120610Z AUTO 14004KT 3/4SM BR VV001 03/03 A3004 RMK AO2=
us.sao.011212:KAST 120618Z AUTO 14004KT 1 1/4SM BR BKN001 02/02 A3005 RMK
us.sao.011212:KAST 120625Z AUTO 14004KT 2SM BR SCT001 02/02 A3005 RMK AO2=
us.sao.011212:KAST 120633Z AUTO 14003KT 8SM FEW001 02/02 A3005 RMK AO2=
us.sao.011212:KAST 120655Z AUTO 11003KT 3SM BR CLR 02/02 A3006 RMK AO2 VIS 1 3/4
us.sao.011212:KAST 120722Z AUTO 11005KT 1 3/4SM BR SCT036 02/02 A3006 RMK
us.sao.011212:KAST 120730Z AUTO 12005KT 1SM BR SCT036 02/02 A3006 RMK AO2=
us.sao.011212:KAST 120739Z AUTO 12004KT 2SM BR BKN038 02/02 A3006 RMK AO2=
us.sao.011212:KAST 120748Z AUTO 12004KT 8SM BKN035 02/02 A3007 RMK AO2=
us.sao.011212:KAST 120755Z AUTO 12004KT 10SM SCT037 02/02 A3007 RMK AO2 SLP181
us.sao.011212:KAST 120855Z AUTO 13003KT 10SM OVC035 03/03 A3008 RMK AO2 SLP185
us.sao.011212:KAST 120955Z AUTO 14003KT 10SM FEW026 OVC035 03/03 A3009 RMK AO2
us.sao.011212:KAST 121055Z AUTO 14003KT 10SM FEW025 OVC033 04/04 A3009 RMK AO2
us.sao.011212:KAST 121117Z AUTO 16004KT 8SM BKN019 BKN028 OVC033 05/05 A3009 RMK
us.sao.011212:KAST 121155Z AUTO 13005KT 10SM FEW018 OVC028 05/05 A3009 RMK AO2
us.sao.011212:KAST 121255Z AUTO 14006KT 10SM SCT018 OVC027 06/06 A3008 RMK AO2
us.sao.011212:KAST 121336Z AUTO 12005KT 10SM FEW012 OVC030 07/07 A3007 RMK AO2
us.sao.011212:KAST 121355Z AUTO 10006KT 10SM BKN034 OVC046 07/07 A3007 RMK AO2
us.sao.011212:KAST 121455Z AUTO 12004KT 10SM SCT026 OVC032 07/07 A3006 RMK AO2
us.sao.011212:KAST 121514Z AUTO 13004KT 10SM BKN024 OVC032 07/06 A3007 RMK
us.sao.011212:KAST 121523Z AUTO 14003KT 10SM SCT024 OVC032 07/07 A3006 RMK
us.sao.011212:KAST 121555Z AUTO 13004KT 10SM -RA FEW027 OVC034 07/06 A3006 RMK
us.sao.011212:KAST 121645Z AUTO 11003KT 6SM -RA BR BKN024 BKN029 OVC035 07/07
us.sao.011212:KAST 121655Z AUTO 12003KT 7SM -RA BKN024 OVC031 07/07 A3005 RMK
us.sao.011212:KAST 121724Z AUTO 10004KT 6SM -RA BR SCT022 BKN032 OVC039 07/07
us.sao.011212:KAST 121732Z AUTO 10003KT 7SM -RA BKN022 OVC032 07/07 A3004 RMK
us.sao.011212:KAST 121755Z AUTO 13003KT 7SM -RA OVC020 07/07 A3004 RMK AO2
us.sao.011212:KAST 121855Z AUTO 07003KT 6SM -RA BR BKN020 OVC030 08/08 A3003 RMK
us.sao.011212:KAST 121955Z AUTO 18010G17KT 10SM OVC020 09/08 A2999 RMK AO2 RAE47
us.sao.011212:KAST 122055Z AUTO 19016G25KT 10SM SCT018 BKN024 OVC040 10/08 A2996
us.sao.011212:KAST 122124Z AUTO 19018G25KT 10SM FEW013 SCT024 OVC044 10/09 A2994
us.sao.011212:KAST 122144Z AUTO 20013G28KT 7SM -RA FEW013 BKN024 OVC042 10/09
us.sao.011212:KAST 122155Z AUTO 19016G24KT 3SM -RA BR SCT013 OVC021 10/09 A2993
us.sao.011212:KAST 122217Z AUTO 20015G26KT 1 3/4SM -RA BR SCT011 BKN017 OVC022
us.sao.011212:KAST 122220Z AUTO 20015G26KT 1 3/4SM -RA BR SCT009 BKN017 OVC022
us.sao.011212:KAST 122239Z AUTO 21013G22KT 2SM RA BR SCT009 BKN015 OVC020 10/10
us.sao.011212:KAST 122246Z AUTO 21016G24KT 1 3/4SM -RA BR BKN009 BKN015 OVC020
us.sao.011212:KAST 122255Z AUTO 20016G23KT 2 1/2SM RA BR BKN009 OVC018 11/10
us.sao.011212:KAST 122304Z AUTO 21015G22KT 3SM RA BR SCT006 OVC009 11/10 A2993
us.sao.011213:KAST 122355Z AUTO 20015G22KT 5SM -RA BR BKN006 BKN012 OVC021 11/10