Thundery Day Turns To Thundery Night

11:57 p.m.: Severe Thunderstorm Watch now posted for Lancaster County and most of Central Pennsylvania.

11:30 p.m. Update: The Storm Prediction Center is suggesting in the latest mesoscale discussion a new weather watch...perhaps a tornado watch as they mention "all severe weather threats" will be possible in the early morning hours in Eastern and Central Pennsylvania. ~Doug



Update, 8:45 PM: Severe thunderstorm watch now issued for East PA and DE. Watch is out until 4AM. Higher threat for severe thunderstorms will be to the north and west of Philly but there is some chance for some storms to approach severe limits later tonight.

Update, 7:45 PM:   The tornado watch is still out until 10 PM in Central Pennsylvania, with Flash Flood Watches for Thursday for the Lehigh Valley, Poconos, and North Jersey for tomorrow's storms.   Radar up above is showing the activity lining up across Central Pennsylvania, with more activity down near Baltimore lifting northeast towards the Philly area.  If they hold together, they should move through the region around 10 PM or so.   As Doug pointed out below, we could see a tornado watch for Eastern PA, Maryland, and perhaps Delaware later on tonight as the storms down by Baltimore do have a history of some damaging winds and rotation within one of the storm cells.


7:00 p.m. Update: The Storm Prediction Center is considering a tornado watch later this evening as tornadic t-storms in Maryland and Central Pennsylvania may tend to move eastward in time...they may survive as eventual forcing gets closer along with increasing shear.



5:00 p.m. Update: Severe thunderstorm warning in effect until 515 Southwestern New Jersey. It did include parts of Delaware.


4:04 p.m. Update: Local National Weather Service says that there has been an injury this afternoon as a woman was struck by a tree in Camden County. The incident happened around 3 p.m.



3:30 p.m. Update: A flash flood watch has been issued for Thursday for the following counties: Mercer, Middlesex, Hunterdon, Carbon, Monroe, Northampton, and Lehigh Counties. Points to the immediate north of these counties are also under a flash flood watch.



3:13 p.m. Update: Lancaster County has now been put under a tornado watch which includes all of Central Pennsylvania. Earlier, a tornado watch was issued for Baltimore and Washington.



3:06 p.m. Update: According to the National Weather Service, a severe t-storm has been reported.



A severe thunderstorm warning has been issued for the Philadelphia Metro until 3:15, issued about 20 minutes ago.

Damaging winds up to 60 MPH are possible with this storm.

It will be near Philadelphia by 3:00 p.m.

Additional pop-up thunderstorms will develop this aftn and I will be updating this thread.