Friday, December 26, 2014

Heat is on

Heat to flare the next three days; near 100 on Thursday.

Heat is on

The drastic change in the character of June is already under way, even though the temperature hasn't made it past the low 80s this afternoon.

At 5, the humidity was 62 percent at Philadelphia International Airport, and the all-important dewpoint was up to 67, heading toward the discomfort level.

The National Weather Service has hoisted an "excessive heat warning" for tomorrow afternoon until daybreak Friday, and chances are it will be extended through Friday afternoon.

On Friday, the weather service says it likely will hit 90 before lunch, and top out at 95. Forecasts highs for tomorrow and Thursday are 95 and 99, respectively.

Fortunately, the first heat wave of the year is unlikely to rank among the deadlier ones in the period of record.

Typically, a heat wave has to last four or more days before heat-wave mortality spikes up significantly.

This one should fizz out with a round of shower late Friday, and the the weekend again is looking comfortable, if not splendid.

 

Tony Wood Inquirer Weather Columnist
About this blog

Everyone talks about the weather, and here we write about it.

When we’re around and conditions warrant, we’ll keep you updated about what’s coming, but we will do our best always to discuss weather and climate developments in context and remind you that nothing in the atmosphere happens in a vacuum.

Tony Wood has been writing about the atmosphere for The Inquirer for 26 years.

Reach Tony at twood@phillynews.com.

Tony Wood Inquirer Weather Columnist
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