Heat Wave Bad for Health?

Unusually warm weather brings early seasonal allergies.
2:06 | 03/13/12

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Transcript for Heat Wave Bad for Health?
We want to examine more about the long term effects of this record heat stretching across two thirds of the country. Temperatures as much as 35 degrees above normal -- ABC's Sam Champion is going to explain. What this heat wave means for health. Again today stunningly high temperatures across the country. Sioux City, Iowa a record high near eighty degrees in Kansas City another broken record the Mercury climbing to over eighty. And the thermometer topped eighty in -- South Dakota South Dakota. But Americans seem to be welcoming the war bonds it. -- you're relentless. Just around the -- This unusually warm spell has caused by the jet -- -- to the north that the nation keeping the cold Arctic air out of reach. This war is expected the last for the next few weeks. But it's confusing mother nature. And concerning farmers tonight especially those with fields of winter wheat and orchards of apples who worry that their crops would be damaged if we get a late frost now. World news watchers are curious to document in many early blooms -- -- in Louisiana in January some flowers in February. And then Wisconsin croak -- is growing in ground that's normally frozen in March. From all over the country people are tweeting -- pictures of their early blooming trees like this magnolia in southern Illinois here in the northeast as the juniper the box elder in the maple that are throwing their pollen out early you can't see -- but we're getting -- two to four weeks earlier. Then normal and that's a real problem for the 30% of adults and 40% of children that suffer from seasonal allergies. -- -- of Atlantic is already suffering mightily from seasonal allergies that she says have arrived a full month thoroughly. He's six stepped up he can't -- you never really getting -- I'm tired all the time. And along with all the other concerns there is the looming spring storm season for 2012 long range forecasters are expecting a warmer than normal spraying to continue this trend. We Marty seeing severe storms in February and the peak of the tornado season Diane. Isn't usually until May.

This transcript has been automatically generated and may not be 100% accurate.

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