Philly has largely missed out on thunderstorms so far -- with one storm passing north of the city earlier this afternoon and a second storm fizzling out over Chester County. With humidity still around, a good bit of heat, and a trough moving through the Northeast, the thunder threat will continue for the next several hours. The best chances will continue to remain north of the city this evening, where three severe thunderstorm warnings are out -- Schuylkill, Carbon, and Lehigh Counties for the next hour or so. A line of storms is approaching Allentown and will pass to the city's north over the next hour. It may brush across northern fringes of Bucks County before crossing into New Jersey around 8 PM.
There have been a few pop up storms at the Shore, in Delaware, and across Maryland as well...but Philadelphia has remained in a relative dry island for the most part through the afternoon hours. With the main trough pushing east this evening, some of the thunderstorm activity out near Harrisburg might survive the trip east into our region after 9:30 PM...provided that instability from daytime heating holds in place long enough to help those storms hold their own over the next few hours. The potential for widespread severe is limited but a couple of stronger storms (such as the storms near Allentown) will flirt with severe limits and produce gusty winds over the next several hours.
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