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Philadelphia Weather: Tornado Watch Issued For Parts Of Pennsylvania, Delaware And New Jersey As Gusty Thunderstorms Head Towards Region

PHILADELPHIA (CBS) -- Get ready for some gusty thunderstorms to impact the afternoon drive on Friday followed by record-breaking heat to start the weekend. The Philadelphia area begins to warm up today as a warm front lifts north across the region. 

The National Weather Service has issued a tornado watch for parts of Delaware, New Jersey, and Pennsylvania until 7 p.m. Friday.

However, a cluster of gusty thunderstorms known as a Mesoscale Convective Vortex, or MCV, will race across the region late Friday afternoon with the threat for severe storms in spots. 

Philadelphia Weather: Gusty Severe Thunderstorms To Roll Through Delaware Valley Before Record-Setting Heat Arrives On Saturday

The threat will mainly be from the city on north and west, with the timing likely between 3 and 6 p.m. The biggest threat with the complex of storms will be damaging straight-line wind gusts, and the area is under a marginal (1 out of 5) risk of severe weather. 

After the storms clear, we'll be talking about dangerous heat. 

A Heat Advisory will be in effect from 11 a.m. to 10 p.m. Saturday as heat index values around 100 degrees. 

Philadelphia Weather: Gusty Severe Thunderstorms To Roll Through Delaware Valley Before Record-Setting Heat Arrives On Saturday

Our high will reach 97, breaking the record of 95 set in 1934. 

Sunday will be another scorcher with a high of around 93 before a cold front brings scattered storms by evening.

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