Aviation Digital Data Service (ADDS)

Output produced by TAFs form (1456 UTC 26 March 2017)
found at http://www.aviationweather.gov/adds/tafs/
 
Forecast for: EGLL (LONDON/HEATHROW , GB)
Text: TAF EGLL 261102Z 2612/2718 08014KT CAVOK
Forecast period: 1200 UTC 26 March 2017 to 0000 UTC 27 March 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the E (80 degrees) at 16 MPH (14 knots; 7.3 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: not forecast
Weather: NSW  (no significant weather)
Text: BECMG 2700/2703 7000
Forecast period: 0000 to 0800 UTC 27 March 2017
Forecast type: BECOMING: Conditions expected to become as follows by 0300 UTC 27 March 2017
Winds: from the E (80 degrees) at 16 MPH (14 knots; 7.3 m/s)
Visibility: 4 miles (7 km)
Weather: NSW  (no significant weather)
Text: TEMPO 2700/2710 BKN006
Forecast period: 0000 to 1000 UTC 27 March 2017
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Ceiling: 600 feet AGL
Clouds: broken clouds at 600 feet AGL
Weather: no significant weather forecast for this period
Text: PROB30
Forecast period: 0300 to 0900 UTC 27 March 2017
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Visibility: 2.49 miles (4.01 km)
Ceiling: 400 feet AGL
Clouds: broken clouds at 400 feet AGL
Weather: BR  (mist)
Text: TEMPO 2703/2709 4000 BR BKN004
Forecast period: 0800 to 1800 UTC 27 March 2017
Forecast type: BECOMING: Conditions expected to become as follows by 1100 UTC 27 March 2017
Winds: from the E (80 degrees) at 16 MPH (14 knots; 7.3 m/s)
Visibility: 6 or more miles (10+ km)
Weather: NSW  (no significant weather)