Aviation Digital Data Service (ADDS)

Output produced by TAFs form (0612 UTC 20 February 2017)
found at http://www.aviationweather.gov/adds/tafs/
 
Forecast for: EGLL (LONDON/HEATHROW , GB)
Text: TAF EGLL 200452Z 2006/2112 25008KT 9999 BKN010
Forecast period: 0600 UTC 20 February 2017 to 1200 UTC 21 February 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the WSW (250 degrees) at 9 MPH (8 knots; 4.2 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: 1000 feet AGL
Clouds: broken clouds at 1000 feet AGL
Weather: no significant weather forecast for this period
Text: TEMPO 2006/2012 6000 BKN006
Forecast period: 0600 to 1200 UTC 20 February 2017
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Visibility: 4 miles (6 km)
Ceiling: 600 feet AGL
Clouds: broken clouds at 600 feet AGL
Weather: no significant weather forecast for this period
Text: PROB30
Forecast period: 0600 to 0900 UTC 20 February 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: -DZ BR  (light drizzle, mist)
Text: TEMPO 2006/2009 4000 -DZ BR BKN004
Forecast period: 1100 to 1800 UTC 20 February 2017
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Clouds: scattered clouds at 1800 feet AGL
Weather: no significant weather forecast for this period
Text: PROB30
Forecast period: 2100 UTC 20 February 2017 to 1200 UTC 21 February 2017
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Visibility: 3 miles (5 km)
Ceiling: 600 feet AGL
Clouds: broken clouds at 600 feet AGL
Weather: -RA -DZ  (light rain, light drizzle)
Text: TEMPO 2011/2018 SCT018
Forecast period: 0000 to 0800 UTC 21 February 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: RA RA DZ  (rain, rain, drizzle)