Saturday, February 21, 2015

The Washington Post has got it exactly correct. Abrupt changes are the most dangerous.

February 20, 2015
By Angela Fritz.

Friday arrived (click here) with an icy slap as Arctic air surged into the eastern United States. The cold snap caused long-standing records to tumble across the Midwest and Eastern Seaboard.
A new, all-time record low for any month was set in Lynchburg, Va., on Friday morning, when the city dropped to minus 11 degrees. The previous all-time low was minus 10, set in 1985 and 1996.
Flint, Mich., has tied its all-time record low for any month when the temperature dropped to a brutal minus 25 degrees on Friday morning. The last time it was so cold in Flint was on Jan. 18, 1976.
Cleveland broke its all-time record low for the month of February when the thermometer bottomed out at 17 degrees below zero on Friday morning. The new record surpassed the previous by one degree, set more than a century ago on Feb. 10, 1899....

The maps from The Weather Channel tell an interesting tale.

February 22, 2015
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The Weather Channel 24 hour Temperatures Change Map.

Southwest Pennsylvania changed temperature within 24 hours. But, the temperature is achieved was only 33 degrees F.

Personal preparedness for rapid temperature change is necessary.

February 22, 2015
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The Weather Channel Current Temperatures