Aviation Digital Data Service (ADDS)

Output produced by TAFs form (1634 UTC 23 November 2017)
found at http://www.aviationweather.gov/adds/tafs/
 
METAR text: EGLL 231620Z AUTO 23013KT 9999 NCD 11/02 Q1003 NOSIG
Conditions at: EGLL (LONDON/HEATHROW , GB) observed 1620 UTC 23 November 2017
Temperature: 11.0°C (52°F)
Dewpoint: 2.0°C (36°F) [RH = 54%]
Pressure (altimeter): 29.62 inches Hg (1003.0 mb)
Winds: from the SW (230 degrees) at 15 MPH (13 knots; 6.8 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

Forecast for: EGLL (LONDON/HEATHROW , GB)
Text: TAF EGLL 231059Z 2312/2418 23015G28KT 9999 SCT030
Forecast period: 1200 to 1500 UTC 23 November 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the SW (230 degrees) at 17 MPH (15 knots; 7.8 m/s)
gusting to 32 MPH (28 knots; 14.6 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: BECMG 2315/2318 23010KT
Forecast period: 1500 UTC 23 November 2017 to 1200 UTC 24 November 2017
Forecast type: BECOMING: Conditions expected to become as follows by 1800 UTC 23 November 2017
Winds: from the SW (230 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: PROB30
Forecast period: 0000 to 0400 UTC 24 November 2017
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Visibility: 4 miles (7 km)
Ceiling: 1000 feet AGL
Clouds: broken clouds at 1000 feet AGL
Weather: RA  (rain)
Text: TEMPO 2400/2404 7000 RA BKN010
Forecast period: 1200 to 1800 UTC 24 November 2017
Forecast type: BECOMING: Conditions expected to become as follows by 1500 UTC 24 November 2017
Winds: from the NW (310 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