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Posted at 01:05 PM ET, 06/20/2012

Washington, D.C.: hottest spot in the East


Noon temperatures from weather.com. Washington, D.C. was hottest location in the eastern U.S. ( Weather.com )
Once again (dial back last summer), Washington, D.C. finds itself at the epi-center of a heat blast torching the eastern U.S. At noon, D.C.’s 93 degrees were at least 5 degrees warmer than southern cities like Miami, Atlanta, Raleigh, New Orleans and Houston.

Link: D.C. area forecast: Two days of extreme heat with heat index near 100-105

That’s an impressive feat when you consider heat advisories and heat warnings have been posted from Virginia to Maine.


Upper level weather chart showing the D.C. area at the center of the heat dome over the Eastern U.S. (StormVistaWxModels.com)
Interestingly, D.C.’s closest “heat” rivals (not the Thunder) are to its north, where Philadelphia, New York, and Boston are also in the low 90s.

The core of the heat wave has set up over the mid-Atlantic and Northeast due to the position of high pressure - or descending air (which warms as it compresses) - at upper levels. Today, it’s smack dab over the region covering northern Virginia to central Pennsylvania.

Forecast highs from Richmond to Portland are in the 90s to near 100 with heat indices of 100-105.

Today’s high so far of 93 degrees in D.C. makes it the hottest day of 2012 and hottest since August 9, 2011.

(Note: the weather.com map above includes just a sampling of U.S. weather stations - mostly major cities - so it’s possible there are hotter spots in between)

By  |  01:05 PM ET, 06/20/2012

Categories:  Latest, U.S. Weather, Extreme Heat

 
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