Aviation Digital Data Service (ADDS)

Output produced by TAFs form (2116 UTC 20 November 2017)
found at http://www.aviationweather.gov/adds/tafs/
 
METAR text: KIAD 202052Z 20008KT 10SM FEW250 10/M05 A3016 RMK AO2 SLP215 T01001050 56005
Conditions at: KIAD (WASH DC/DULLES , VA, US) observed 2052 UTC 20 November 2017
Temperature: 10.0°C (50°F)
Dewpoint: -5.0°C (23°F) [RH = 34%]
Pressure (altimeter): 30.16 inches Hg (1021.4 mb)
[Sea-level pressure: 1021.5 mb]
Winds: from the SSW (200 degrees) at 9 MPH (8 knots; 4.2 m/s)
Visibility: 10 or more miles (16+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 25000 feet AGL
Weather: no significant weather observed at this time

Forecast for: KIAD (WASH DC/DULLES , VA, US)
Text: KIAD 202102Z 2021/2124 20008KT P6SM SKC
Forecast period: 2100 UTC 20 November 2017 to 1100 UTC 21 November 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the SSW (200 degrees) at 9 MPH (8 knots; 4.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: clear skies
Weather: no significant weather forecast for this period
Text: FM211100 20008KT P6SM FEW200 FEW250 WS020/22035KT
Forecast period: 1100 to 1300 UTC 21 November 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the SSW (200 degrees) at 9 MPH (8 knots; 4.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 20000 feet AGL
few clouds at 25000 feet AGL
Wind shear: at 2000 feet ( 610 m) AGL, from the SW (220 degrees) at 40 MPH (35 knots; 18.2 m/s)
Weather: no significant weather forecast for this period
Text: FM211300 20008KT P6SM FEW200 FEW250
Forecast period: 1300 to 1700 UTC 21 November 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the SSW (200 degrees) at 9 MPH (8 knots; 4.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 20000 feet AGL
few clouds at 25000 feet AGL
Weather: no significant weather forecast for this period
Text: FM211700 20012KT P6SM FEW200 SCT250
Forecast period: 1700 UTC 21 November 2017 to 0000 UTC 22 November 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the SSW (200 degrees) at 14 MPH (12 knots; 6.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 20000 feet AGL
scattered clouds at 25000 feet AGL
Weather: no significant weather forecast for this period