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Tuesday, January 7, 2014

Fastest Temperature Change Ever, Spearfish, South Dakota

World record temperature change

Spearfish holds the world record for the fastest known temperature change. On January 22, 1943 at about 7:30 a.m. MST, the temperature in Spearfish was −20°C (−4°F). The Chinook wind picked up speed rapidly, and two minutes later (7:32 a.m.) the temperature was +7°C {+45°F} above zero. The 27°C (49°F) rise in two minutes set a world record that still holds. By 9:00 a.m., the temperature had risen to 12°C (54°F). Suddenly, the chinook died down and the temperature tumbled back to −20°C (−4°F). The 32°C (58°F) drop took only 27 minutes.[15][16]



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