Aviation Digital Data Service (ADDS)

Output produced by TAFs form (2001 UTC 20 September 2014)
found at http://www.aviationweather.gov/adds/tafs/
 
Forecast for: KSFO (SAN FRANCISCO , CA, US)
Text: KSFO 201728Z 2018/2124 29010KT P6SM FEW008
Forecast period: 1800 to 2100 UTC 20 September 2014
Forecast type: FROM: standard forecast or significant change
Winds: from the WNW (290 degrees) at 12 MPH (10 knots; 5.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 800 feet AGL
Weather: no significant weather forecast for this period
Text: FM202100 29016KT P6SM FEW008 SCT010
Forecast period: 2100 UTC 20 September 2014 to 0400 UTC 21 September 2014
Forecast type: FROM: standard forecast or significant change
Winds: from the WNW (290 degrees) at 18 MPH (16 knots; 8.3 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 800 feet AGL
scattered clouds at 1000 feet AGL
Weather: no significant weather forecast for this period
Text: FM210400 29008KT P6SM SCT010
Forecast period: 0400 to 0800 UTC 21 September 2014
Forecast type: FROM: standard forecast or significant change
Winds: from the WNW (290 degrees) at 9 MPH (8 knots; 4.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: scattered clouds at 1000 feet AGL
Weather: no significant weather forecast for this period
Text: FM210800 29006KT P6SM BKN008
Forecast period: 0800 UTC 21 September 2014 to 0000 UTC 22 September 2014
Forecast type: FROM: standard forecast or significant change
Winds: from the WNW (290 degrees) at 7 MPH (6 knots; 3.1 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: 800 feet AGL
Clouds: broken clouds at 800 feet AGL
Weather: no significant weather forecast for this period