Wednesday, November 24, 2010

Thanksgiving Holiday Forecast

The high temperature for the 24th @ KABE was 47 degrees ..This is actually the seasonal value for this time of the year!

This forecast is issued for tomorrow Thanksgiving and the following day as well. There may or may not be a daily forecast issued for the 26th…

Thanksgiving is going to be a cloudy day across the region. High pressure is currently in control but is beginning to slide out. This will allow a warm front which is to the southwest of the region to begin to lift up to the NE. This is going to provide a very decent push of WAA or Warm Air Advection. This is actually causing over running precipitation which is well North of this warm front.

Dewpoints at this present time are relatively dry and low across the area. Around the KABE region they are in the teens. This means that as the precipitation moves in its going to be lost to virga (some remember that well from last winter) ..but will eventually saturate the column.

At the surface there is going to be a rather cold air mass leftover in place and as the warmer air moves in aloft with the precipitation ..it could create some nasty holiday travel in the form of snow/sleet and freezing rain. However..by afternoon due to the WAA pretty much all areas should change over to rain..the only exception could be in the Poconos where the cold air likes to get trapped and linger longer.

Temperatures today are going to also be on the cold side with highs only in the 20s in Maine and pretty much the 30s elsewheres. Places such as NYC and KPHL may reach the lower 40s. These places should see a primarily rain event as well.

So with the above in mind the following map is issued mainly to show the precipitation types one can expect over the period.

The ICE area is where a potential for up to .25 ice exists. If you are out and about traveling in these regions please be aware of any deteriorating weather conditions.

Winter

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