Aviation Digital Data Service (ADDS)

Output produced by TAFs form (0707 UTC 27 April 2015)
found at http://www.aviationweather.gov/adds/tafs/
 
Forecast for: EGLL (LONDON/HEATHROW , GB)
Text: TAF EGLL 270456Z 2706/2812 02004KT CAVOK
Forecast period: 0600 to 1100 UTC 27 April 2015
Forecast type: FROM: standard forecast or significant change
Winds: from the NNE (20 degrees) at 5 MPH (4 knots; 2.1 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: not forecast
Weather: NSW  (no significant weather)
Text: BECMG 2711/2714 26010KT
Forecast period: 1100 UTC 27 April 2015 to 1200 UTC 28 April 2015
Forecast type: BECOMING: Conditions expected to become as follows by 1400 UTC 27 April 2015
Winds: from the W (260 degrees) at 12 MPH (10 knots; 5.2 m/s)
Visibility: 6 or more miles (10+ km)
Weather: NSW  (no significant weather)
Text: PROB30
Forecast period: 1400 to 1900 UTC 27 April 2015
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Ceiling: 3000 feet AGL
Clouds: broken clouds at 3000 feet AGL
Weather: -SHRA  (light rain showers)
Text: TEMPO 2714/2719 -SHRA BKN030
Forecast period: 1000 to 1200 UTC 28 April 2015
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Ceiling: 3500 feet AGL
Clouds: broken clouds at 3500 feet AGL
Weather: -SHRA  (light rain showers)