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W1GMF > WX 04.03.09 04:08l 59 Lines 3077 Bytes #999 (0) @ WW
BID : 53306_W1GMF
Read: GUEST
Subj: MT WASHINGTON 2/27/2009
Path: IZ3LSV<IK3GET<IW2OHX<OE6XPE<DB0RES<WA7V<KG6BAJ<VE2RXY<VE2DTD<ON4HU<
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Sent: 090227/0934Z @:W1GMF.#EMA.MA.USA.NOAM #:53306 [ABINGTON, MA] FBB7.00e
From: W1GMF@W1GMF.#EMA.MA.USA.NOAM
To : WX@NEBBS
MT WASHINGTON WEATHER CONDITIONS
Friday, February 27, 2009
5:27 AM
Conditions at 5:27 AM
Weather: Freezing fog
Temperature: 23°F
Wind: S 50 mph
Visibility: 100 feet
Relative Humidity: 100%
Station Pressue: 23.78" falling
Ground Conditions: 20" snow/ice/rime w/ deeper drifts
24 Hour Statistics
Maximum Temperature: 25°F
Minimum Temperature: 14°F
Peak Wind Gust: SW 59 mph
Average Wind Speed: 33.5 mph
Liquid Precipitation: 0.02"
Snowfall: 0.2"
Almanac Data
Record High: 38°F (1957, 2000)
Record Low: -28°F (1950)
Average Daily Temperature: 9°F
Average Monthly Melted Precipitation: 7.33
Average Monthly Snowfall: 42.40
Total Snowfall So Far This Month: 41.2"
Average Monthly Winds: 43.0
Sunrise: 06:21
Sunset: 5:36
Forecast Discussion
Rain and winds will be the headlines for the next 24 hours. Low pressure will move northeast from the Great Lakes along the St. Lawrence River Valley today into the overnight hours. Today, the state will be in the warmer sector of the low as warm southwesterly air moves in behind yesterdays warm front. All of this as a cold front slowly approaches from the west. As the cold front approaches, a shield of precipitation will move in, mostly this afternoon, which start as frozen precipitation but as temperatures continue to warm, freezing precipitation or just plain rain is expected by the early evening. As the cold front passes overnight, temperatures fall back turning any remaining precipitation back to snow. So that's the rain prospects, lets talk winds now. Winds associated with this low will be strong today into the evening with gusts well over 100 mph expected. The pressure gradient is strong and well stacked and although not as strong as earlier storms this year, a low level jet will mix down making winds even stronger. There is a chance that gusts today will be the highest of the season but this will come down to the timing of the passing of the low. But as the night progresses into tomorrow, winds will slowly make a downward trend as Canadian high pressure builds from the north. This will also push drier air in and allow for a drying trend with colder temperatures tomorrow. As things transition, winds will shift clockwise from southwesterly to northwesterly. As for snowfall amounts over the next 24 hours, only elevations above 4000 feet will see anything today as the auto road vertical profile is showing temperatures above freezing at this point as of 6 am. Amounts today will be light and mostly in the form of ice pellets if at all. Overnight, amounts will be 1-2 inches of ice pellets, snow and snow grains. Melted equivalent when all is said and done will be somewhere between a quarter to a half inch it looks like. Also, with all the warm air on the cold snow, fog will be dense today. And trail conditions will be sloppy as snow will be water logged and soft from base to summit pretty much today with a lot of ice tonight into tomorrow when everything solidifies with the dropping temperatures.
Ryan Knapp
Staff Meteorologist
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