Tweet of the heat wave, from the National Weather Service:
How hot is it? It’s so hot that all-time records are being set in June: “Nashville has reached its hottest temperature on record…109 degrees at 314 pm. The previous all time record was 107 from July 27th and 28th of 1952.”
UPDATE: Meteorologist Dr. Jeff Masters has more all-time heat records:
109° Columbia, SC (old record 107° on two previous occasions)
109° Cairo, IL (old record 106° on 8/9/1930)
108° Paducah, KY (ties same on 7/17/1942
106° Chattanooga, TN (ties same on 7/28/1952)
105° Raleigh, NC (ties same on 8/21/2007 and 8/18/1988)
105° Greenville, SC (old record 104° 8/10/2007 although 106° was recorded by the Signal Service in July 1887)
104° Charlotte, NC (ties same on 8/9 and 10/2007 and 9/6/1954)
102° Bristol, TN (ties same on 7/28/1952-this site now known as `Tri-State Airport’)
109° Athens, GA. This is just 1° shy of the Georgia state record for June of 110° set at Warrenton in 1959.
Here is a great graphic via Capital Climate:
The U.S. surface temperature map from Unisys at 4 pm, June 29,2012, shows 100° temperatures stretching almost continuously from California eastward to the Carolinas.
NBC Meteorologist Bill Karins said on Friday , “We’ve never really seen a heat wave like this in the month of June.” Sadly, in a few decades this will just be considered a normal June (see below).
How hot is it? It is so hot that NBC Washington’s Chief Meteorologist, Doug Kammerer, explained on air “If we did not have global warming, we wouldn’t see this.”
Like a baseball player on steroids, our climate system is breaking records at an unnatural pace (see “March Came In Like A Lamb, Went Out Like A Globally Warmed Lion On Steroids Who Smashed 15,000 Heat Records“).
As Climate Central explains in its post, “Scorching June Heat Wave Puts 50 Million in U.S. on Alert”: