Aviation Digital Data Service (ADDS)

Output produced by TAFs form (0907 UTC 30 May 2017)
found at http://www.aviationweather.gov/adds/tafs/
 
METAR text: RJTT 300900Z 18016KT 9999 FEW030 BKN/// 23/19 Q1008 NOSIG
Conditions at: RJTT (TOKYO INTL AIRPO, JP) observed 0900 UTC 30 May 2017
Temperature: 23.0°C (73°F)
Dewpoint: 19.0°C (66°F) [RH = 78%]
Pressure (altimeter): 29.76 inches Hg (1008.0 mb)
Winds: from the S (180 degrees) at 18 MPH (16 knots; 8.3 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 3000 feet AGL
Weather: no significant weather observed at this time

Forecast for: RJTT (TOKYO INTL AIRPO, JP)
Text: TAF RJTT 300506Z 3006/3112 18018KT 9999 FEW025
Forecast period: 0600 to 1600 UTC 30 May 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the S (180 degrees) at 21 MPH (18 knots; 9.4 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 2500 feet AGL
Weather: no significant weather forecast for this period
Text: BECMG 3016/3018 21008KT
Forecast period: 1600 UTC 30 May 2017 to 0000 UTC 31 May 2017
Forecast type: BECOMING: Conditions expected to become as follows by 1800 UTC 30 May 2017
Winds: from the SSW (210 degrees) at 9 MPH (8 knots; 4.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 2500 feet AGL
Weather: no significant weather forecast for this period
Text: BECMG 3100/3103 18020KT
Forecast period: 0000 to 1200 UTC 31 May 2017
Forecast type: BECOMING: Conditions expected to become as follows by 0300 UTC 31 May 2017
Winds: from the S (180 degrees) at 23 MPH (20 knots; 10.4 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 2500 feet AGL
Weather: no significant weather forecast for this period