Thursday, December 11, 2008

Low pressure in W North Carolina








The storm system continues to wind up in the southeast. The current satellite imagery shows the magnitude of the storm very well. Decent cold air damming at the surface continues to hold freezing temperatures down to Route 2. Tonight, areas along and north of Route 2 will likely be the zone of maximum icing. 850mb temperatures are at 0C just north of Keene now. This boundary marks about where more sleet than freezing rain will fall. North of the -2C isotherm is where the maximum snowfall will occur.

On radar, you can see the heaviest precipitation has yet to move into the region. This will all shift into the region tonight. Freezing rain, mixed at times with sleet will fall through the night. Another .5" to .75" of ice accretion (up to an inch above 1000ft) with 1 to 2 inches of sleet accumulation is possible through dawn tomorrow.

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