American Airlines Flight 331/METAR

This is the METAR (aviation routine weather report) in force at the time of the American Airlines Flight 331 incident on 22 December 2009 at Norman Manley International Airport in Kingston, Jamaica, and the SPECI (aviation special weather report) issued following the incident.

METAR[edit]

The METAR in force at the time of the accident was METAR MKJP 230300Z 32008KT 33000 +SHRA BKN014 FEW016CB SCT030 BKN100 21/20 Q1014 RETSRA.^[1]

It translates as follows:-^[2]

METAR = METAR
MKJP = for Norman Manley International Airport (its International Civil Aviation Organization airport code is MKJP)
230300Z = issued on the 23rd of the month, at 03:00 UTC
32008KT = Wind from 320° (appromixmately north west) at 8 knots (9.2 mph; 15 km/h)
33000 = Runway visual range 3,000 metres (9,800 ft)^{[NB 1]}
+SHRA = Heavy showers of rain
BKN014 =Broken clouds (⅝ to ⅞ of sky obscured) at 1,400 feet (430 m)
FEW016CB =Few coulds (⅛ to ¼ of sky obscured) at 1,600 feet (490 m), Cumulonimbus reported.
BKN100 = Broken clouds at 10,000 feet (3,000 m)
21/20 =Temperature 21°C, dew point 20°C
Q1014 =QNH 1014 hPa
RETSRA = Recent Thunderstorms and rain

After the accident, a special weather report was issued, SPECI MKJP 230325Z 32011KT 22000 +SHRA BKN014 FEW016CB SCT030 BKN100 21/19 Q1014 RETSRA.^[1]

It translates as follows:-^[2]

SPECI = SPECIal weather report
MKJP = for Norman Manley International Airport
230325Z =issued on the 23rd of the month at 03:25 UTC
32011KT =Wind from 320° (approximately north west) at 11 knots (13 mph; 20 km/h)
22000 =Runway visual range 2,200 metres (7,200 ft)^{[NB 2]}
+SHRA =Heavy showers of rain
BKN014 =Broken clouds at 1,400 feet (430 m)
FEW016CB =Few clouds at 1,600 feet (490 m)
SCT030 = Scattered clouds (⅜ to ½ sky obscured) at 3,000 feet (910 m)
BKN100 = Broken clouds at 10,000 feet (3,000 m)
21/19 = Temperature 21°C, dewpoint 19°C
Q1014 = QNH 1014 hPa
RETSRA = Recent thunderstorms and rain

↑ Note that there is a misprint of 33000 for 3000, RVR would never be reported as high as 33,000m
↑ Note that there is a misprint of 22000 for 2000, RVR would never be reported as high as 22,000m.

↑ ^1.0 ^1.1 "History for Kingston, Jamaica, Tuesday, December 22, 2009". Weather Underground. Retrieved 23 December 2009.
↑ ^2.0 ^2.1 "KEY TO DECODING THE U.S. METAR OBSERVATION REPORT". Texas A&M University. Archived from the original on 5 January 2010. Retrieved 23 December 2009.

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