As of 4 AM EST
R.W.S issues a Winter Storm Watch Effective 3/1/09 12 noon eastern standard time to 3/2/09 6 PM eastern standard time.
The following watch is in effect for Berks, Lehigh and Northampton Counties in Pennsylvania and for all of NNJ.
Low pressure developing over the southeast will continue to gather moisture from the Gulf Of mexico. While this is taking place, high pressure from the NW, will build into the region on Northwest winds. This will start to feed colder air into the region. Meanwhile the low in the southeast will start to head NE and proceed off the coast near South Central Carolina. From there the low pressure will take a northerly to NNE track up the eastern seaboard about 50-100 miles off the coast. There will be generous amounts of moisture with this low pressure as it rides up the east coast.
At this point and time it appears that a snowfall of 6 inches or greater can be expected. The ECM delivers .70 liquid QPF to this area and normal 10:1 ratios would be 7 inches. With ratios greater then 10:1 , the potential is there to receive up to a foot of snow.
Stay tuned to R.W.S for further statements/or warnings.
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