METAR

From Academic Kids

METAR is a format for reporting weather information. METAR is a French abbreviation, which translates to "aviation routine meteorological report." (Meteorological Aviation Routine Weather Report)

METAR reports are primarily used by airline pilots, to learn about the weather where they're going to fly, and by meteorologists, who use the information to help forecast the weather. METAR reports usually come from airports. Typically, reports are generated once an hour, however, if conditions change significantly, they may updated in special reports called SPECI's.

A typical METAR report contains data for the temperature, dew point, wind, precipitation, cloud cover, cloud heights, visibility, and barometric pressure. A METAR report may also contain information on precipitation amounts, lightning, and other information that would be of interest to pilots or meteorologists.

The complement to METAR reports, showing forecast weather rather than current weather, are TAFs.

United States METAR Code

This METAR example is from Trenton-Mercer Airport near Trenton, New Jersey, and was taken on December 5, 2003 at 18:53 UTC.

METAR KTTN 051853Z 04011KT 1/2SM VCTS SN FZFG BKN003 OVC010 M02/M02 A3006 RMK AO2 TSB40 SLP176 P0002 T10171017=

International METAR Code

US metars deviate slightly from the WMO (who write the code on behalf of ICAO) FM 15-XII code. Details listed in FAA's AIM. The following is a METAR example is from Sarafovo Airport in Burgas, Bulgaria, and was taken on February 4, 2005 at 16:00 UTC.

METAR LBBG 041600Z 12003MPS 310V290 1400 R04/P1500N R22/P1500U +SN BKN022 OVC050 M04/M07 Q1020 NOSIG 9949//91=

External links

nl:METAR fi:Metar sv:METAR

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