Aviation Digital Data Service (ADDS)

Output produced by TAFs form (1121 UTC 21 December 2014)
found at http://www.aviationweather.gov/adds/tafs/
 
Forecast for: KSFO (SAN FRANCISCO , CA, US)
Text: KSFO 210909Z 2109/2212 23005KT 5SM BR OVC010
Forecast period: 0900 to 1200 UTC 21 December 2014
Forecast type: FROM: standard forecast or significant change
Winds: from the SW (230 degrees) at 6 MPH (5 knots; 2.6 m/s)
Visibility: 5 miles (8 km)
Ceiling: 1000 feet AGL
Clouds: overcast cloud deck at 1000 feet AGL
Weather: BR  (mist)
Text: FM211200 25005KT P6SM OVC012
Forecast period: 1200 to 1800 UTC 21 December 2014
Forecast type: FROM: standard forecast or significant change
Winds: from the WSW (250 degrees) at 6 MPH (5 knots; 2.6 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: 1200 feet AGL
Clouds: overcast cloud deck at 1200 feet AGL
Weather: no significant weather forecast for this period
Text: FM211800 30006KT P6SM BKN020
Forecast period: 1800 UTC 21 December 2014 to 0200 UTC 22 December 2014
Forecast type: FROM: standard forecast or significant change
Winds: from the WNW (300 degrees) at 7 MPH (6 knots; 3.1 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: 2000 feet AGL
Clouds: broken clouds at 2000 feet AGL
Weather: no significant weather forecast for this period
Text: FM220200 29007KT P6SM SCT009 BKN010
Forecast period: 0200 to 1200 UTC 22 December 2014
Forecast type: FROM: standard forecast or significant change
Winds: from the WNW (290 degrees) at 8 MPH (7 knots; 3.6 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: 1000 feet AGL
Clouds: scattered clouds at 900 feet AGL
broken clouds at 1000 feet AGL
Weather: no significant weather forecast for this period