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After a run of mostly sunny, comfortable summer days, severe weather is expected to return to the Philadelphia region.

The NBC10 First Alert Weather Team has issued a First Alert for the potential of damaging winds, hail, localized flash flooding and even isolated tornadoes for the entire region Tuesday from 2 to 10 p.m. The greatest threat is in Delaware and southernmost New Jersey as the storm is tracking south.

Some light rain fell Tuesday morning as mugginess increased. Severe storms are expected in the afternoon and evening. The worst of it could come during the drive home.

Heavy downpours and damaging winds are the biggest threats. Large hail and isolated tornadoes can't be ruled out, the National Weather Service said.

A flash flood watch is in effect for Philadelphia and the surrounding counties. Drivers should take caution as roads could flood during the commute home as 1 to 3 inches of rain could fall. Remember to turn around and not drown as water could be much deeper than it looks.

Power outages are also possible due to the winds.

Montgomery County Preps for Another Round of Severe Weather

The storms move in as humidity builds Tuesday morning as temps push into the upper 80s by midday.

After Tuesday’s storms, lingering showers are predicted Wednesday and Thursday before more comfortable and mostly dry weather for the weekend.