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W1GMF > WX 10.03.08 02:00l 60 Lines 2419 Bytes #999 (0) @ WW
BID : 24501_W1GMF
Read: GUEST
Subj: MT WASHINGTON 0309
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Sent: 080309/1214Z @:W1GMF.#EMA.MA.USA.NOAM #:24501 [ABINGTON, MA] FBB7.00e
From: W1GMF@W1GMF.#EMA.MA.USA.NOAM
To : WX@NEBBS
MT WASHINGTON WEATHER CONDITIONS
Sunday, March 9, 2008
5:00 AM
Wind chill advisory in effect 8 am EDT today through 4 am EDT tomorrow
Conditions at 5:00 AM
Weather: freezing fog and blowing snow
Temperature: 7°F
Wind: W 85mph
Visibility: 200 ft
Relative Humidity: 100%
Station Pressue: 23.02" and rising
Ground Conditions: 5" ice, rime, snow w/ deeper drifts
24 Hour Statistics
Maximum Temperature: 39°F
Minimum Temperature: 22°F
Peak Wind Gust: SE 75 MPH
Average Wind Speed: 42.6 mph
Liquid Precipitation: 1.27"
Snowfall: T
Almanac Data
Record High: 44°F (2000)
Record Low: -24°F (2005)
Average Daily Temperature: 12°F
Average Monthly Melted Precipitation: 9.42
Average Monthly Snowfall: 54.10
Total Snowfall So Far This Month: 17.0"
Average Monthly Winds: 40.4
Sunrise: 7:03
Sunset: 6:49
Forecast Discussion
The intense moisture rich low pressure system that dropped over an inch of rain on the summits yesterday will travel up through Maine and into the Canadian Maritimes. A cold frontal passage dropped temperatures below freezing before midnight, and winds shifting to the W and then to the NW will usher in much colder air, and temperatures will plummet into the single digits below zero. Even with the center of the low well to the northeast, wrap around moisture combined with upslope flow and lingering low level moisture will continue fog and the chance for snow showers through the day today. Relatively strong high pressure building behind the front will tighten the pressure gradient, and winds will be howling, at and above hurricane force, with gust approaching the century mark. With temperature in the sub zero range through tomorrow morning, this will result in a wind chill advisory to be in effect for the higher summits today through 4 am tomorrow. As the high pressure builds, winds will diminish, and the clouds will begin to lift from the summit overnight. Conditions for a partial undercast will be favorable for tomorrow, as a slight inversion below the summit and relatively calm winds will be enough to trap moisture below the summit. The small amount of snow that fell upon the summits will be easily lifted from the glassy ice beneath it, and white out conditions will prevail above tree line tomorrow into tonight, as freezing fog and snow showers combine with blowing and drifting snow.
Stacey Kawecki
Observer
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