Aviation Digital Data Service (ADDS)

Output produced by METARs form (1515 UTC 20 November 2018)
found at http://www.aviationweather.gov/metar/data/
 
Forecast for: KNHK (PATUXENT RIVER , MD, US)
Text: TAF KNHK 2015/2115 31011KT 9999 BKN040 BKN080 QNH2990INS
Forecast period: 1500 to 2200 UTC 20 November 2018
Forecast type: FROM: standard forecast or significant change
Winds: from the NW (310 degrees) at 13 MPH (11 knots; 5.7 m/s)
Visibility: 6 or more miles 10+ km)
Ceiling: 4000 feet AGL
Clouds: broken clouds at 4000 feet AGL
broken clouds at 8000 feet AGL
Weather: no significant weather forecast for this period
Text: BECMG 2022/2100 31009KT 9999 FEW080 QNH3008INS
Forecast period: 2200 UTC 20 November 2018 to 1000 UTC 21 November 2018
Forecast type: BECOMING: Conditions expected to become as follows by 0000 UTC 21 November 2018
Winds: from the NW (310 degrees) at 10 MPH (9 knots; 4.6 m/s)
Visibility: 6 or more miles 10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 8000 feet AGL
Weather: no significant weather forecast for this period
Text: BECMG 2110/2112 VRB05KT 9999 SCT200 QNH3018INS T13/2018Z TM01/2111Z FN20002
Forecast period: 1000 to 1500 UTC 21 November 2018
Forecast type: BECOMING: Conditions expected to become as follows by 1200 UTC 21 November 2018
Winds: variable direction winds at 6 MPH (5 knots; 2.6 m/s)
Visibility: 6 or more miles 10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: scattered clouds at 20000 feet AGL
Weather: no significant weather forecast for this period