Stormy weather to follow ‘excessive heat’

Posted: May 30, 2012

Yesterday was the year’s hottest day, and today could be even steamier, before stormy weather ushers in a stretch of cooler days.

Today’s high could edge yesterday’s 91 in Philadelphia, with humidity that could make conditions feel like the mid-90s, according to an excessive heat warning issued by the National Weather Service for the city, its surrounding counties on both side of the Delaware River, as well as the Wilmington and Trenton areas.

"Take extra precautions if you work or spend time outside," the warning advises. "When possible, reschedule strenuous activity to early morning or evening. ... Wear lightweight and loose-fitting clothing ... Drink plenty of water."

Frequent breaks are recommended for outdoor workers, either in the shade or in an air-conditioned building.

"Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency — call 911," the warning states.

Advice from the Red Cross includes "Never leave children or pets alone in enclosed vehicles" and "Know those in your neighborhood who are elderly, young, sick or overweight. They are more likely to become victims of excessive heat and may need help."

Showers and thunderstorms could develop by late afternoon, as a cold front moves through the area overnight into Wednesday morning, according to the forecast.

More than a half-inch of rain is possible.

Wednesday could be warm as well, with a high in the upper 80s, but then the next five days could top out from the mid 70s to 80 degrees.

More rain, possibly heavy at times, could fall Friday night into Saturday.

For more on the forecast, go to’s weather page.

Contact staff writer Peter Mucha at 215-854-4342 or

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