Aviation Digital Data Service (ADDS)

Output produced by METARs form (2255 UTC 20 January 2019)
found at http://www.aviationweather.gov/metar/data/
 
Forecast for: RKSO (OSAN (US/KOR-AFB, KR)
Text: TAF RKSO 201900Z 2019/2201 VRB06KT 9999 SKC QNH3020INS
Forecast period: 1900 UTC 20 January 2019 to 0100 UTC 21 January 2019
Forecast type: FROM: standard forecast or significant change
Winds: variable direction winds at 7 MPH (6 knots; 3.1 m/s)
Visibility: 6 or more miles 10+ km)
Clouds: clear skies
Weather: no significant weather forecast for this period
Text: BECMG 2101/2102 33020G25KT 9999 SCT040 QNH3015INS
Forecast period: 0100 to 0800 UTC 21 January 2019
Forecast type: BECOMING: Conditions expected to become as follows by 0200 UTC 21 January 2019
Winds: from the NNW (330 degrees) at 23 MPH (20 knots; 10.3 m/s)
gusting to 29 MPH (25 knots; 12.9 m/s)
Visibility: 6 or more miles 10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: scattered clouds at 4000 feet AGL
Weather: no significant weather forecast for this period
Text: BECMG 2108/2109 32009KT 9999 SKC QNH3022INS TX02/2105Z TNM08/2021Z
Forecast period: 0800 UTC 21 January 2019 to 0100 UTC 22 January 2019
Forecast type: BECOMING: Conditions expected to become as follows by 0900 UTC 21 January 2019
Winds: from the NW (320 degrees) at 10 MPH (9 knots; 4.6 m/s)
Visibility: 6 or more miles 10+ km)
Clouds: clear skies
Weather: no significant weather forecast for this period