Heat warning extended

At 3:46 p.m., officially the temperature topped out at 97 at Philadelphia International Airport, impressively hot, but 2 shy of the June 21 record, 99.

Not that it was a pleasant day, but the heat index was a shade less ferocious than anticipated, maxing out at 100 in the hourly observations.

Next up will be a mighty uncomfortable overnight, with the forecast low a sultry 80. That would be a record-high minimum for the day.

But it's quite possible, perhaps even likely, the temperature will drop below 80 before 11:59 p.m. tomorrow, wiping out any daily record.

Strong thunderstorms are possible, and those can drop temperatures in a hurry.

Before that happens, it is expected to hit 95, and the heat warnings has been extended to 5 p.m. tomorrow.

Once the storms chase away the heat, the weather should be splendid and comfortable for the next several days. 

The Philadelphia Corporation for Aging has extended operation of its heatline. The heatline is available until midnight Thursday and from 8:30 a.m. to 5 p.m. Friday. The phone number to call is 215-765-9040.

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