Monday, December 7, 2009

Dec 9th-11th Special Weather Statement

Time 2 PM EST

12/7/09

The following is a special weather statement issued by R.W.S. 


Low pressure currently over the west coast is going to be moving eastward over the next 24-36 hours. This low pressure will be in the ohio valley by about wednesday 12 Z. This low pressure will then move off to the NE but before doing so will develop a secondary over the Chesapeak Bay region. Together these two low pressures will move off to the NE and bring a variety of weather across the region.

This special weather statement applies to all of PA with the exception of SE PA around the PHL area & this also applies to NW NJ.

As the two low pressures move northeast a cold air mass will be in place thanks to high pressure over the northeast. This high will begin to lift into Eastern Canada which will allow this storm to move Northeast. Cold Air Damming will be in place and with precipitation overspreading the area from the south west , look for snow to develop tuesday evening across the areas covered by the statement. The snow may accumulate a few inches before a changeover to ice and then potentially plain rain.

Stay tuned for potential advisories, watches & or warnings on this latest winter storm.

No comments:

Post a Comment