Aviation Digital Data Service (ADDS)

Output produced by METARs form (2120 UTC 31 July 2010)
found at http://aviationweather.gov/adds/metars/index.php
 
METAR text: KSEA 312053Z 21010KT 10SM OVC014 17/11 A3003 RMK AO2 SLP174 T01670111 58003 $
Conditions at: KSEA (SEATTLE/METRO, WA, US) observed 2053 UTC 31 July 2010
Temperature: 16.7°C (62°F)
Dewpoint: 11.1°C (52°F) [RH = 70%]
Pressure (altimeter): 30.03 inches Hg (1017.0 mb)
[Sea-level pressure: 1017.4 mb]
Winds: from the SSW (210 degrees) at 12 MPH (10 knots; 5.2 m/s)
Visibility: 10 or more miles (16+ km)
Ceiling: 1400 feet AGL
Clouds: overcast cloud deck at 1400 feet AGL
Weather:
SOME DATA ABOVE MAY BE INACCURATE!!!
"$" is an indication the sensor requires maintenance

METAR text: KSEA 311953Z 24009KT 10SM OVC010 16/11 A3003 RMK AO2 SLP175 T01560111 $
Conditions at: KSEA (SEATTLE/METRO, WA, US) observed 1953 UTC 31 July 2010
Temperature: 15.6°C (60°F)
Dewpoint: 11.1°C (52°F) [RH = 75%]
Pressure (altimeter): 30.03 inches Hg (1017.0 mb)
[Sea-level pressure: 1017.5 mb]
Winds: from the WSW (240 degrees) at 10 MPH (9 knots; 4.7 m/s)
Visibility: 10 or more miles (16+ km)
Ceiling: 1000 feet AGL
Clouds: overcast cloud deck at 1000 feet AGL
Weather:
SOME DATA ABOVE MAY BE INACCURATE!!!
"$" is an indication the sensor requires maintenance

Forecast for: KSEA (SEATTLE/METRO, WA, US)
Text: KSEA 312105Z 3121/0124 22008KT P6SM BKN010
Forecast period: 2100 to 2200 UTC 31 July 2010
Forecast type: FROM: standard forecast or significant change
Winds: from the SW (220 degrees) at 9 MPH (8 knots; 4.2 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: 1000 feet AGL
Clouds: broken clouds at 1000 feet AGL
Weather: no significant weather forecast for this period
Text: TEMPO 3121/3122 SCT010 SCT090
Forecast period: 2100 to 2200 UTC 31 July 2010
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Clouds: scattered clouds at 1000 feet AGL
scattered clouds at 9000 feet AGL
Weather: no significant weather forecast for this period
Text: FM312200 24006KT P6SM SCT080 SCT250
Forecast period: 2200 UTC 31 July 2010 to 0900 UTC 01 August 2010
Forecast type: FROM: standard forecast or significant change
Winds: from the WSW (240 degrees) at 7 MPH (6 knots; 3.1 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: scattered clouds at 8000 feet AGL
scattered clouds at 25000 feet AGL
Weather: no significant weather forecast for this period
Text: FM010900 20006KT P6SM OVC006
Forecast period: 0900 to 1200 UTC 01 August 2010
Forecast type: FROM: standard forecast or significant change
Winds: from the SSW (200 degrees) at 7 MPH (6 knots; 3.1 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: 600 feet AGL
Clouds: overcast cloud deck at 600 feet AGL
Weather: no significant weather forecast for this period
Text: FM011200 20006KT 4SM BR OVC003
Forecast period: 1200 to 1800 UTC 01 August 2010
Forecast type: FROM: standard forecast or significant change
Winds: from the SSW (200 degrees) at 7 MPH (6 knots; 3.1 m/s)
Visibility: 4 miles (6 km)
Ceiling: 300 feet AGL
Clouds: overcast cloud deck at 300 feet AGL
Weather: BR  (mist)
Text: FM011800 22006KT P6SM OVC008
Forecast period: 1800 to 2100 UTC 01 August 2010
Forecast type: FROM: standard forecast or significant change
Winds: from the SW (220 degrees) at 7 MPH (6 knots; 3.1 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: 800 feet AGL
Clouds: overcast cloud deck at 800 feet AGL
Weather: no significant weather forecast for this period
Text: FM012100 25005KT P6SM BKN100 BKN250
Forecast period: 2100 UTC 01 August 2010 to 0000 UTC 02 August 2010
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: 10000 feet AGL
Clouds: broken clouds at 10000 feet AGL
broken clouds at 25000 feet AGL
Weather: no significant weather forecast for this period