Wednesday, December 29, 2010

2010: Jacksonville Weather Year in Review

From the continual arctic blasts of cold air to start the year, to the long standing oppressive heat of the summer, and the lack of any substantial rainfall during the latter half of the year, the weather in 2010 will be remembered mainly for the extreme variations in temperature and lack of precipitation that were experienced across northeast Florida and southeast Georgia.  Overall, despite a record summer heat wave, the quick return to much colder than normal weather in December will help make 2010 one of the coldest years on record across the area.

The cold start to 2010 can be partially explained by the dramatic shift in the mid-latitude jet stream configuration associated with the Arctic Oscillation (AO) and the North Atlantic Oscillation (NAO). The switch began on New Year’s Day as an arctic air mass entered the region and started what would be the coldest 2 weeks in climate history across the forecast area. Most of the climate sites across the area set new all-time records for consecutive days with minimum temperatures at 32 degrees or less. 
  • RECORD BROKEN: ≤ 32°F  Consecutive Day Streak
         -Old Record: 8 days (January 17-24, 1977)
         -New Record: 12 days (January 2-14, 2010)

2010 Consecutive Days with Min Temp  ≤32°F
January 2010 ≤32°F Consecutive Day Streak
Old Record of ≤32°F  Consecutive Day Streak
Jacksonville, FL (JAX)
12 out of 13 days
January 2-7 and 9-14

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