The End of This Warmth

Update, 7 AM:   The watch in Pennsylvania have been dropped as the band of rain and wind have moved out of the state and into New Jersey.   No warnings are out at 7 AM but the threat for a brief strong wind gust and a 15 minute shot of heavier rain remain.   Some of the stronger dynamics associated with the storm line have weakened and the line is not quite as potent as it was a couple of hours ago.

Update, 5:05 AM: Severe Thunderstorm Watch issued until 10 AM for the Philadelphia region (counties in the "red" color on the map below).   The highest potential for gusty winds are in the Philadelphia region, Delaware (under a tornado watch until 10 AM), and New Jersey over the next two to three hours as the storms begin to march east.   The orange shading down by Wilmington and in Chester County are for severe thunderstorm warnings that are out until 6:15 AM.

Tornado Watches to our south, temperatures near 70 in the Delaware Valley at 5 AM, and a squall line to end our recent Spring Fling.   Aw, volatile weather in Spring...there's nothing like it in Philadelphia.   The southern parts of the region are waking up to a tornado watch until 10 AM (Delaware), with a gusty line of rain and thunder marching steadily east and northeast through the Mid Atlantic this morning.   This line should begin to work into the western suburbs over the next 30-45 minutes and hitting Philadelphia in the 6 AM hour, with South Jersey getting hit by 7:30.   Storms could gust to over 50 mph and a weak tornado could spin up due to some limited wind shear within the thunderstorms.   While, for now, the Philadelphia area is not under a watch we do run the risk of getting in on some of the stronger wind gusts with these storms as they are nudging northeast along the eastward moving front.

These storms will impact the region this morning and will slap the region with a return to reality as temperatures will fall from near 70 to the upper 40's to around 50 degrees by around midday, with temperatures only nudging slightly higher late this afternoon with some sunshine possibly returning towards dinner.  After the squall line crosses the region, a period of rain will persist through midday before ending.  The region should see about a half inch, with some isolated higher rainfall totals that could approach an inch of rain, from this morning's storms.

You can track the progress of the storms across the region on our current weather page.