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A typical METAR contains data for the airport identifier, time of observation, wind direction and speed, visibility, current weather phenomena such as precipitation, cloud cover and heights, temperature, dew point, and barometric pressure. This information forms the body of the report, consisting a maximum of 11 groups of information.
This is a code number from 0 to 4, with 0, 1 and 2 meaning data is included, and 3 and 4 indicating no precipitation data. i X is a code number indicating the manner of station operation, and the format used in group 7wwWW; codes 1, 2 and 3 indicate a staffed station, while codes 4 to 7 indicate an automatic station.
If visibility or cloud height measurements fall on a boundary (e.g. 5000 m visibility or 1500 ft cloud height) the colour state assumes the higher value in this case WHT. [ citation needed ] If an airfield runway is unusable for reasons other than clouds or low visibility (e.g. ice or other obstructions) then the word BLACK is written in full ...
3SM -SHRA BKN020 indicates that visibility will be 3 statute miles (5 km) in light (-) showers (SH) of rain (RA), with a broken ceiling (between 5 ⁄ 8 and 7 ⁄ 8 of the sky covered) at 2,000 feet (600 m) above ground level (AGL). Each line beginning with FM indicates a rapid change in the weather over a period of less than an hour.
It is reported within surface weather observations and METAR code either in meters or statute miles, depending upon the country. Visibility affects all forms of traffic: roads, railways, sailing and aviation. The geometric range of vision is limited by the curvature of the Earth and depends on the eye level and the height of the object being ...
metar lbbg 041600z 12003mps 090v150 1400 r04/p1500n r22/p1500u +sn bkn022 ovc050 m04/m07 q1020 nosig 9949//91= [26] Personal weather stations, maintained by citizens rather than government officials, do not use METAR code.
The parenthesized letters are the shortened METAR codes for each phenomenon. [1] Mechanisms ... When the visibility is over 1 kilometre (0.62 mi), snow is determined ...
Flight visibility and weather (/WX) includes both flight visibility and the current flight weather weather phenomenon. Flight visibility is prepended with FV followed by two-digit visibility, rounded down. If visibility is reported as unrestricted, FV99SM may be used. Flight weather is reported in a similar format as in METAR. [2]: 29