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Severe Thunderstorms With Heavy Rain Possible In The Upper Midwest; Excessive Heat For Central U.S.

Several rounds of strong to severe thunderstorms will be possible from the northern Plains and upper Midwest to the Great Lakes through Friday. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat will grip the central Plains with heat indices approaching 105 to 110 degrees. Very hot and humid conditions are likely to expand into the Mid Atlantic. Read More >

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Last Map Update: Thu, Jul. 20, 2017 at 10:02:39 pm CDT

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A Heat Advisory remains in effect for the entire Four State Region through 7 pm Friday Evening. High temperatures in the middle to upper 90s on Friday, coupled with higher than normal relative humidity values will result in Heat Index Values surpassing 105 degrees across some locations on Friday. A heat advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Here are some heat safety tips to protect yourself from the very hot and humid conditions expected through late Friday afternoon:
Look for a mostly clear sky with warm and humid conditions again tonight, as temperatures fall into the mid and upper 70s. Another very hot and humid day is expected again Friday, as afternoon temperatures climb into the mid and upper 90s. When combined with the humidity, afternoon heat indices will range from 105 to 109 degrees. Thus, a Heat Advisory remains in effect until 7pm Friday areawide.
Climate Data for 07/20/2017

 

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