Friday at 3 PM in Florida.

http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=2059

Clear skies over the Eastern U.S. caused by a blocking ridge of
high pressure on March 21, 2012, are apparent in this visible satellite image.
The comma-shaped cloud pattern over the Central U.S. is associated with a
"cut-off" low pressure system. This low is moving over the Eastern U.S. today
through Saturday, and will bring an end to "Summer in March" over the U.S. and
Canada. I