Aviation Digital Data Service (ADDS)

Output produced by METARs form (1351 UTC 21 August 2019)
found at http://www.aviationweather.gov/metar/data/
 
Forecast for: EGKK (LONDON/GATWICK A, GB)
Text: TAF EGKK 211036Z 2112/2218 21008KT 9999 FEW040
Forecast period: 1200 UTC 21 August 2019 to 1800 UTC 22 August 2019
Forecast type: FROM: standard forecast or significant change
Winds: from the SSW (210 degrees) at 9 MPH (8 knots; 4.1 m/s)
Visibility: 6 or more miles 10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 4000 feet AGL
Weather: no significant weather forecast for this period
Text: TEMPO 2200/2207 8000
Forecast period: 0000 to 0700 UTC 22 August 2019
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Visibility: 5 miles (8 km)
Ceiling: unknown
Clouds: missing
Weather: no significant weather forecast for this period
Text: PROB30 2202/2206 4000 BR
Forecast period: 0200 to 0600 UTC 22 August 2019
Forecast type: PROBABLE: 30 percent likelihood of the following during this time
Visibility: 2.49 miles (4.01 km)
Ceiling: unknown
Clouds: missing
Weather: BR  (mist)