Aviation Digital Data Service (ADDS)

Output produced by TAFs form (1350 UTC 22 October 2014)
found at http://www.aviationweather.gov/adds/tafs/
 
Forecast for: EGLL (LONDON/HEATHROW , GB)
Text: TAF EGLL 221101Z 2212/2318 28010KT 9999 SCT030
Forecast period: 1200 UTC 22 October 2014 to 0300 UTC 23 October 2014
Forecast type: FROM: standard forecast or significant change
Winds: from the W (280 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
Text: BECMG 2303/2306 22007KT
Forecast period: 0300 to 1800 UTC 23 October 2014
Forecast type: BECOMING: Conditions expected to become as follows by 0600 UTC 23 October 2014
Winds: from the SW (220 degrees) at 8 MPH (7 knots; 3.6 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
Forecast period: 0700 to 1800 UTC 23 October 2014
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Ceiling: 1400 feet AGL
Clouds: broken clouds at 1400 feet AGL
Weather: no significant weather forecast for this period