Aviation Digital Data Service (ADDS)

Output produced by TAFs form (0956 UTC 23 April 2017)
found at http://www.aviationweather.gov/adds/tafs/
 
METAR text: EGKK 230950Z 15006KT 090V210 9999 SCT025 12/05 Q1027
Conditions at: EGKK (LONDON/GATWICK A, GB) observed 0950 UTC 23 April 2017
Temperature: 12.0°C (54°F)
Dewpoint: 5.0°C (41°F) [RH = 62%]
Pressure (altimeter): 30.32 inches Hg (1027.0 mb)
Winds: from the SSE (150 degrees) at 7 MPH (6 knots; 3.1 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: scattered clouds at 2500 feet AGL
Weather: no significant weather observed at this time

Forecast for: EGKK (LONDON/GATWICK A, GB)
Text: TAF EGKK 230451Z 2306/2412 13005KT 9999 SCT030
Forecast period: 0600 UTC 23 April 2017 to 0900 UTC 24 April 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the SE (130 degrees) at 6 MPH (5 knots; 2.6 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: scattered clouds at 3000 feet AGL
Weather: no significant weather forecast for this period
Text: PROB30 2306/2308 8000
Forecast period: 0600 to 0800 UTC 23 April 2017
Forecast type: PROBABLE: 30 percent likelihood of the following during this time
Visibility: 5 miles (8 km)
Weather: no significant weather forecast for this period
Text: PROB30 2402/2406 4000 BR
Forecast period: 0200 to 0600 UTC 24 April 2017
Forecast type: PROBABLE: 30 percent likelihood of the following during this time
Visibility: 2.49 miles (4.01 km)
Weather: BR  (mist)
Text: BECMG 2409/2412 27010KT
Forecast period: 0900 to 1200 UTC 24 April 2017
Forecast type: BECOMING: Conditions expected to become as follows by 1200 UTC 24 April 2017
Winds: from the W (270 degrees) at 12 MPH (10 knots; 5.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: scattered clouds at 3000 feet AGL
Weather: no significant weather forecast for this period