Aviation Digital Data Service (ADDS)

Output produced by TAFs form (0454 UTC 30 March 2017)
found at http://www.aviationweather.gov/adds/tafs/
 
METAR text: RJTT 300430Z 17011KT CAVOK 16/06 Q1015 NOSIG RMK A3000
Conditions at: RJTT (TOKYO INTL AIRPO, JP) observed 0430 UTC 30 March 2017
Temperature: 16.0°C (61°F)
Dewpoint: 6.0°C (43°F) [RH = 51%]
Pressure (altimeter): 29.97 inches Hg (1015.0 mb)
Winds: from the S (170 degrees) at 13 MPH (11 knots; 5.7 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: ceiling and visibility are OK
Clouds: unknown
Weather: no significant weather observed at this time

Forecast for: RJTT (TOKYO INTL AIRPO, JP)
Text: TAF RJTT 292305Z 3000/3106 02006KT 9999 FEW030
Forecast period: 0000 UTC 30 March 2017 to 0600 UTC 31 March 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the NNE (20 degrees) at 7 MPH (6 knots; 3.1 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 3000 feet AGL
Weather: no significant weather forecast for this period
Text: BECMG 3000/3002 12010KT
Forecast period: 0000 to 0300 UTC 30 March 2017
Forecast type: BECOMING: Conditions expected to become as follows by 0200 UTC 30 March 2017
Winds: from the ESE (120 degrees) at 12 MPH (10 knots; 5.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 3000 feet AGL
Weather: no significant weather forecast for this period
Text: BECMG 3003/3005 18016KT
Forecast period: 0300 to 1000 UTC 30 March 2017
Forecast type: BECOMING: Conditions expected to become as follows by 0500 UTC 30 March 2017
Winds: from the S (180 degrees) at 18 MPH (16 knots; 8.3 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 3000 feet AGL
Weather: no significant weather forecast for this period
Text: BECMG 3010/3012 34012KT
Forecast period: 1000 UTC 30 March 2017 to 0600 UTC 31 March 2017
Forecast type: BECOMING: Conditions expected to become as follows by 1200 UTC 30 March 2017
Winds: from the NNW (340 degrees) at 14 MPH (12 knots; 6.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 3000 feet AGL
Weather: no significant weather forecast for this period
Text: TEMPO 3018/3100 34020G30KT
Forecast period: 1800 UTC 30 March 2017 to 0000 UTC 31 March 2017
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Winds: from the NNW (340 degrees) at 23 MPH (20 knots; 10.4 m/s)
gusting to 34 MPH (30 knots; 15.6 m/s)
Weather: no significant weather forecast for this period