First Alert: High Heat Tuesday, Storms for Some Tuesday Night

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A First Alert for extreme heat is in place over South Jersey, Delaware (except the beaches) and Philadelphia until 6 p.m. By noon on Tuesday, temperatures already felt like triple digits in some spots in both New Jersey and Delaware.
By late Tuesday afternoon, temperatures will likely climb to around 100 degrees over many locations, particularly south. The warm air is streaming into the region ahead of a cold front, and leading to very humid and hot conditions.
The intense heat will break once storms roll into the area. As a cold front approaches, thunderstorms may fire off across the northern edge of the region. Between 9pm and 2am, we’ve declared a First Alert for the Lehigh Valley, Berks Co, and the PA Suburbs. Philadelphia could see an isolated storm to severe storm as well, although the potentially is lower. The storms could produce lightning, damaging winds, or small hail.
Notice that areas south of Philadelphia are less likely to see any rain other than a light spotty shower. These areas are not included in the evening First Alert.
Here's a look at the overnight hours.
Good news though! While the high humidity may linger through Wednesday morning, things become much more comfortable by Wednesday afternoon and into Thursday.
Additional good news? Cooler temperatures prevail in the days to come. Thursday and Friday see low 80s, and the weekend is marked by dry conditions with upper 70s in the afternoon. Enjoy!
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