Senin, 21 Maret 2011

Some Rain This AM, Some Thunder This PM

Showers and a steadier band of rain are moving in from the west this morning with a warm front at the surface and aloft helping to charge up the atmosphere, creating some lift above the ground and helping to enhance precipitation across Pennsylvania.    For the most part, precipitation is falling in a liquid fashion as temperatures are in the lower 40's in many locations across the immediate area.   Some sleet is mixing in farther north and northwest (where the precipitation banding is brighter in color) but even up in the northern parts of the state, temperatures are above freezing except in the higher elevations so slick travel doesn't seem all that likely.   Some sleet could mix in with the heavier precipitation as it works through later on -- especially the farther north one resides, with the Poconos seeing a bit of snow possible on the highest of hills.   Around the city that won't be an issue with today's event.

We should see this first round of rain work east through the region this morning -- there will be a couple of lulls in the rain as there is a break in it back in Central PA but we should see off and on showers through late morning before we get into a more substantial break in the precipitation after 10 or 11 AM.   The aforementioned warm front will clear the region and we'll reside in the "warm sector" for a few hours.

Despite seeing temperatures nudge higher, clouds may linger through much of the afternoon as the push of warmth at the surface isn't as strong as it is aloft.   Given the rain from this morning, we may have some junk cloudiness hang around for the afternoon and as a result temperatures may just get into the upper 50's by day's end.   The more sun we coax out of today (the big wildcard), the higher the temperature ultimately goes.

At the same time, if we do get a bit more sunshine, we could see some thundershowers pop along a southward slipping cold front late this afternoon.  The best chance for these will be across Western and Central Pennsylvania but a few sunshine dependent rumbles of thunder could slide into Southeast PA just after dinner.   We'll see if those pop -- don't hold your breath...if they do, they shouldn't be severe but could kick up some breeze.

More:   Current Weather Page

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