On this date, the most rapid temperature change in the history of the United States occurred on this date in 1980. That is when the temperature at Great Falls, Mont., rose 49 degrees (from -32 to 17 degrees) in just seven minutes due to a warm Chinook wind.

FRIDAY'S WEATHER EXTREMES:
   HIGHEST TEMPERATURE (DEGREES F).........................84 Plant City, Fla.
   HIGHEST HEAT INDEX (DEGREES F)..........................84 Sarasota, Fla.
   LOWEST TEMPERATURE (DEGREES F)..........................-5 Kremmling, Colo.
   LOWEST WIND CHILL (DEGREES F)...........................-55 Deadhorse, Alaska
   HIGHEST WIND GUST (MPH).................................74 Homer, Alaska
   HIGHEST PRECIPITATION (INCHES)..........................3.66 Rolla, N.D.