Aviation Digital Data Service (ADDS)

Output produced by METARs form (1425 UTC 23 January 2019)
found at http://www.aviationweather.gov/metar/data/
 
Forecast for: CYYH (SPENCE BAY AIRPO, NU, CA)
Text: TAF CYYH 231138Z 2312/2324 18005KT WS005/32015KT P6SM -SN SCT040
Forecast period: 1200 to 1500 UTC 23 January 2019
Forecast type: FROM: standard forecast or significant change
Winds: from the S (180 degrees) 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 4000 feet AGL
Wind Shear: at 500 feet ( 152 m) AGL, from the NW (320 degrees) at 17 MPH (15 knots; 7.8 m/s)
Weather: -SN  (light snow)
Text: TEMPO 2312/2318 5SM -SN BKN025
Forecast period: 1200 to 1800 UTC 23 January 2019
Forecast type: TEMPORARY: The following changes expected for less than half the time period
Visibility: 5 miles (8 km)
Ceiling: 2500 feet AGL
Clouds: broken clouds at 2500 feet AGL
Weather: -SN  (light snow)
Text: BECMG 2315/2317 32007KT
Forecast period: 1500 to 1800 UTC 23 January 2019
Forecast type: BECOMING: Conditions expected to become as follows by 1700 UTC 23 January 2019
Winds: from the NW (320 degrees) at 8 MPH (7 knots; 3.6 m/s)
Visibility: 6 or more miles 10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: scattered clouds at 4000 feet AGL
Weather: -SN  (light snow)
Text: FM231800 32007KT P6SM IC SCT030 BKN090 RMK NXT FCST BY 231800Z
Forecast period: 1800 UTC 23 January 2019 to 0000 UTC 24 January 2019
Forecast type: FROM: standard forecast or significant change
Winds: from the NW (320 degrees) at 8 MPH (7 knots; 3.6 m/s)
Visibility: 6 or more miles 10+ km)
Ceiling: 9000 feet AGL
Clouds: scattered clouds at 3000 feet AGL
broken clouds at 9000 feet AGL
Weather: IC  (ice crystals)