Mount Washington Weather Center

Temp	Wind	W. Chill
-4.1°F	296° (NW), 45.6 mph	-35.9°F
METAR *
ZCZC PWMMTRMWN TTAA00 KGYX 210451 METAR KMWN 210451Z 29034KT 1/16SM -SN BLSN FZFG VV000 M20/M20 RMK SNB00 VRY LGT ICG NNNN

Summit Forecast – Thursday, November 20, 2008

The northeast will remain in a stalled pattern for at least the next 36 hours. A quasi-stationary and broad upper level low centered over Quebec will continue to spin a series of weak disturbances in over the next 36 hours. One exiting low is to the northeast which is deepening this morning allowing winds to pick up a bit. After this, the most organized of the incoming shortwaves will be a weak Great Lakes Low that will dive south of the state over the next 24 hours before redeveloping as a coastal low tomorrow off the Jersey shore. Most of the energy with this will pass south as well but, low level moisture will be met with a northwesterly flow which is favorable for producing summit fog and occasional upslope snow showers tonight into tomorrow. Snow showers will be light as there really isnt much moisture to pull from in this air mass, so it will be a dry snow if anything. Change will slowly be occurring in the coming days as Canadian high pressure to the west will continue to build amplifying the cold northwesterly flow making for some dangerous wind chills. We will therefore issue a wind chill advisory for the higher summits from this morning through tomorrow since wind chills will meet our criteria for an advisory which is wind chills of 35-50 below. This means frost bite will take less than 10 minutes to set in on exposed skin. So take necessary precautions and clothing before heading to higher terrain today through tomorrow. Also, with such a cold air mass and only a daily record low of 7 below set in 1951 and 1952 for today, a new daily record low will probably be created with a lower likelihood tomorrow as the record tomorrow is 17 below set in 1987.

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6288'
-4.1°F

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18.0°F

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