Aviation Digital Data Service (ADDS)

Output produced by TAFs form (0953 UTC 22 September 2017)
found at http://www.aviationweather.gov/adds/tafs/
 
METAR text: EGKK 220920Z 25004KT 210V310 CAVOK 13/10 Q1022
Conditions at: EGKK (LONDON/GATWICK A, GB) observed 0920 UTC 22 September 2017
Temperature: 13.0°C (55°F)
Dewpoint: 10.0°C (50°F) [RH = 82%]
Pressure (altimeter): 30.18 inches Hg (1022.0 mb)
Winds: from the WSW (250 degrees) at 5 MPH (4 knots; 2.1 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: ceiling and visibility are OK
Clouds: unknown
Weather: no significant weather observed at this time

Forecast for: EGKK (LONDON/GATWICK A, GB)
Text: TAF AMD EGKK 220622Z 2206/2312 VRB05KT 9999 FEW040
Forecast period: 0600 to 0700 UTC 22 September 2017
Forecast type: FROM: standard forecast or significant change
Winds: variable direction winds at 6 MPH (5 knots; 2.6 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 4000 feet AGL
Weather: no significant weather forecast for this period
Text: BECMG 2207/2210 22010KT
Forecast period: 0700 to 2100 UTC 22 September 2017
Forecast type: BECOMING: Conditions expected to become as follows by 1000 UTC 22 September 2017
Winds: from the SW (220 degrees) at 12 MPH (10 knots; 5.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 4000 feet AGL
Weather: no significant weather forecast for this period
Text: BECMG 2221/2224 VRB05KT
Forecast period: 2100 UTC 22 September 2017 to 0600 UTC 23 September 2017
Forecast type: BECOMING: Conditions expected to become as follows by 0000 UTC 23 September 2017
Winds: variable direction winds at 6 MPH (5 knots; 2.6 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 4000 feet AGL
Weather: no significant weather forecast for this period
Text: PROB30 2223/2303 7000
Forecast period: 2300 UTC 22 September 2017 to 0300 UTC 23 September 2017
Forecast type: PROBABLE: 30 percent likelihood of the following during this time
Visibility: 4 miles (7 km)
Weather: no significant weather forecast for this period
Text: PROB30
Forecast period: 0300 to 1000 UTC 23 September 2017
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Visibility: 5 miles (8 km)
Weather: -RA  (light rain)
Text: TEMPO 2303/2310 8000 -RA
Forecast period: 0600 to 1200 UTC 23 September 2017
Forecast type: BECOMING: Conditions expected to become as follows by 0900 UTC 23 September 2017
Winds: from the SSE (160 degrees) at 12 MPH (10 knots; 5.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 4000 feet AGL
Weather: no significant weather forecast for this period