Extreme cold follows hottest summer on record
December 2010 had the sunshine state shivering. The National Weather Service reports Miami, Fort Lauderdale, Palm Beach, and Naples - among others - all observed their coldest December on record. In its annual weather review, the National Weather Service Office in Miami said:
A cool and wet January through March was followed by the hottest summer on record, and then concluded with the coldest December on record for the main climate sites in South Florida
Temperatures in southern Florida averaged between 9 and 11 degrees below normal in December. It was colder than average almost every day and one of the coldest months (regardless of time of year) compared to average since the early-to-mid 1980s.
The extreme cold was attributed to the same blocking pattern (negative phase of the North Atlantic Oscillation) in the atmosphere that has transported Arctic air up and down the U.S. East Coast.
(H/T Anthony Watts)