Weather symbol legends
- Red (upper-left): temperature (°C)
- Green (lower-left): dewpoint (°C)
- Blue (upper-right): abbreviated mean sea-level pressure in hPa (=mb). To get the pressure value, just put a 10 or a 9 in front of the displayed value and divide by 10: only one of these choices will give a realistic value.
- Magenta (center-left): weather symbol
- Blue (center): cloud cover in octa
- Blue (barb): wind speed in knots and wind direction
- Orange: pressure tendency in the last 3 hours in tenth of hPa
- Purple (left-upper-left): Wind gust in knots
- Upper-center and lower-center (few stations): cloud type symbols
- Black lines: pressure (hPa=mb) lines each 4 hPa analyzed with Barnes algorithm from surface observations and first guess model data (digital filter)
- Red dashed-lines: geopotential height at 500 hPa each 6 dam analyzed with Barnes algorithm from upper-air observations and first guess model data
Decoding time stamp example:
sfc/241125/0400 upa/241125/00
sfc = Surface
241125/0400: year=2024; month=11 (November); day=25; 0400=04:00 UTC
upa = Upper-air
241125/00: year=2024; month=11 (November); day=25; 00=00 UTC