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Today's Weather atop Mount Washington

Mountain weather is subject to rapid changes and extreme conditions. Always be prepared to make your own assessment of travel and weather conditions. This outlook is one tool to help you plan a safe trip. Always travel with adequate clothing, shelter, food, and water.
Tuesday, April 15, 2014
4:34 AM
Wind Chill Advisory midnight tonight to noon Weds; Ravine/Notch flood watch til Weds evening...
Conditions at 4:34 AM

Weather: Cloudy, Drizzle

Temperature: 40°F

Wind: SW 42 mph

Visibility: 20 feet

Relative Humidity: 100%

Station Pressure: 23.68" falling slowly

Ground Conditions: 8" wet snow w/ runoff, bare rocks, deep patch

24 Hour Statistics

Maximum Temperature: 50°F

Minimum Temperature: 40°F

Peak Wind Gust: W 77 mph

Average Wind Speed: 44.5 mph

Liquid Precipitation: 0.00"

Snowfall: 0.0"

Almanac Data

Record High: 50°F (2003)

Record Low: -3°F (1981)

Average Daily Temperature: 22°F

Average Monthly Melted Precipitation: 8.43

Average Monthly Snowfall: 42.70

Total Snowfall So Far This Month: 11.9"

Average Monthly Winds: 34.8

Sunrise: 5:56

Sunset: 7:35

Forecast Discussion

A strong cold front will slowly approach the region today followed by a building ridge of high pressure Wednesday. Ahead of today's front, a warm, moist flow will continue to stream northeast eventually allowing ample amounts of precipitation to fall today and overnight. Precipitation will start as drizzle then become rain showers before falling as rain this afternoon. As the front nears, rain will pick up in intensity, falling heavy at times this afternoon and evening. The heavy rain and rapidly melting snow from the warmth may bring flash flooding in neighboring ravines and generalized flooding and ice jams in neighboring streams and rivers. Therefore, a flood watch will remain in effect until Wednesday evening with a flash flood watch for neighboring ravines this afternoon through sunrise Wednesday. As the front passes overnight, temperatures will sharply drop and winds will ramp up to the century mark as high pressure builds behind the front. This will allow for even lower wind chill values; therefore, a wind chill advisory will be in effect from midnight tonight until noon Wednesday. Along with the cold and wind, as temperatures drop, rain will transition to snow overnight into Wednesday. This will make for icy slabs of snow and very icy trail conditions for Wednesday as temperatures remain only in the single digits through the day. The high winds may also bring about ground blizzards towards sunrise on Wednesday, significantly reducing visibility at times. New snow will be 1 to 3 inches. Ice will be a trace to a half inch but will be higher on summits that remain in the clouds as temperatures drop.

Ryan Knapp
Staff Meteorologist
Home of the World's Worst Weather
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