Rabu, 27 April 2011

Not As Warm, Still Humid, Maybe Some Thunder

 A warm, summery morning in the Delaware Valley as the sunny influences of Bermuda High pressure have waned somewhat and we're merely in a broad, tropical southwest flow ahead of a rather nasty storm system that is poised to move through tomorrow.   Today's weather starts murky, humid, and warm and finishes that way as well, with temperatures approaching 80 away from the ocean, only getting to around 60 at the immediate Shore, as skies stay mostly cloudy and occasionally have some sunny breaks.

Some showers are showing up on radar across coastal sections of the region, with last night's thunderstorms to the west and north now out of the picture.  The showers along and offshore will move northeast but with the heating of the day we should see a scattering of storms pop to our west and lift northeast.   Yesterday's thunder threat was generally west of I-81 although a few storms last night managed to get   into Allentown and Reading.   Today's threat is generally higher west of I-95, although those coastal showers could be a bit more numerous later this morning as a weak disturbance slides up the coast 150 miles east of the NJ coastline.   Storms will be prone to popping up after 3 or 4 PM but may end up being more numerous after sunset as storms farther southwest work their way towards us.


Areas to the west of Philly are under a slight risk for severe weather -- with the highest risk areas confined to the Tennessee Valley and Mid South as a high risk is out down there.  Any thunderstorms that do develop this afternoon may have a better chance of producing heavier rains than severe wind gusts due to the amount of moisture in the atmosphere, although those gusty winds in the storms cannot be ruled out.   Storm chances continue into the night, especially in Western Pennsylvania as the front and storm system begin to make progress towards the east, with the front crossing the region on Thursday afternoon.   Thursday will probably be our area's best overall chance at heavy rain and severe weather.

We'll talk about Thursday's event in more detail this evening.

More:   Current Weather Page

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