Update, 5 PM: Radar (below) is showing a widespread swath of rain/thunder through the region, with flash flood warnings out for Philly and Camden until 6:45 this evening. There are quite a few severe storm warnings out and flood advisories for the region...too numerous to mention. Higher resolution modeling is suggesting another five to six hours of thunderstorms in and around Philadelphia (at least) before things begin to taper down later tonight. While there is a lull in the western burbs at present, more rain and thunder should move in from the west.
A severe thunderstorm watch has been issued this afternoon for our entire area. This watch is in effect until 9 p.m.
Thunderstorms have the potential to be severe with damaging wind gusts and large hail. Of course, Wednesday and Thursday we did not have a severe weather watch for our region....but still ended up with powerful, but scattered storms. The thinking of the SPC is that the storms will be more widespread today...the midday models support this idea.
The main concern is for wet microbursts of damaging winds. Dew points were well above 70 degrees in many areas.
Thunderstorms will also produce torrential rainfall. Much of the region (except the far north) has been placed under a flash flood watch. I could see 3"+ amounts of rainfall causing significant flash flooding in poor drainage areas...with even some roadway flooding. This is especially true for Mercer and Burlington Counties...hit hardest this week.
Thunderstorms will contain intense lightning with numerous cloud to ground lightning strikes. While lightning is not severe, it can kill.
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