Jan. 22, 1943, the temperature in Spearfish, South Dakota, went from -4°F to 45°F in just 2 minutes
Spearfish holds the world record for the fastest recorded temperature change. On January 22, 1943 at about 7:30 a.m. MST, the temperature in Spearfish was −4°F (−20°C). The Chinook wind picked up speed rapidly, and two minutes later (7:32 a.m.) the temperature was +45 °F (+7 °C) above zero. The 49 °F (27 °C) rise in two minutes set a world record that still holds. By 9:00 a.m., the temperature had risen to 54 °F (12 °C). Suddenly, the chinook died down and the temperature tumbled back to −4 °F (−20 °C). The 58 °F (32 °C) drop took only 27 minutes. |
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