On this date in weather history - December 21st

By Trent Aric - Meteorologist
Headline Goes Here

MIAMI - On this date, a temperature inversion is when the atmosphere near the surface actually rises with height. This type of atmosphere can be very stable and hampers vertical motion. On this date in 1994, a strong temperature inversion occurred over Chicago, trapping carbon monoxide in the pollouted air below the inversion. This resulted in 5,000 false alarms from carbon monoxide detectors.  

FRIDAY'S WEATHER EXTREMES:
   HIGHEST TEMPERATURE (DEGREES F).........................75 Key West, Fla.
   HIGHEST HEAT INDEX (DEGREES F).......................... ,
   LOWEST TEMPERATURE (DEGREES F)..........................-27 Kremmling, Colo.
   LOWEST WIND CHILL (DEGREES F)...........................-59 Fairbanks, Alaska
   HIGHEST WIND GUST (MPH).................................124 Mt. Washington, N.H.
   HIGHEST PRECIPITATION (INCHES)..........................2.52 Mt. Pocono, Pa.
  

Copyright 2012 by Post Newsweek. The Associated Press contributed to this report. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.