POSTED: Wednesday, March 14, 2012 - 9:00am
UPDATED: Wednesday, March 14, 2012 - 9:09am
NBC NATIONAL NEWS — Spring fever is in full bloom across much of the country.
Along the tidal basin in Washington the famed cherry blossoms are already starting to pop weeks in advance.
Forecasters say it could be the earliest peak on record.
Today's highs reached the 80s in Texas and the nation's heartland, with 70s across the South and up into the Northeast.
The reason: The jet steam has pushed way up into Canada instead of cutting across the middle of the country.
Along with the start of spring comes the threat of tornados.
A group of international students from Purdue University in Indiana are giving up their vacation to help with cleanup in communities already hard hit by last week's deadly storms.
"I've never seen anything like this, it's so chaotic here," said Ellie Lin.
In Dallas the lack of freezing temperatures this winter means mosquito eggs survived and are already becoming a nuisance.
"The mild winter is getting everyone out to their yards quicker, so the season has started, mosquitos are out," says exterminator Matt Coburn.
Forecasters say even more warm weather is on the way.