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Fourth of July severe storms – maybe 2 rounds – expected in Minnesota

The severe potential increases this afternoon.

A highly unstable airmass will set the stage for strong-to-severe storms across Minnesota on this Fourth of July. 

The line of storms from northern to central Minnesota will move out of the area by mid-morning, with another round – maybe two – of storms expected to redevelop later today. 

According to the National Weather Service, storms will fire late this afternoon into the early evening, and then possibly again late this evening into tonight. Damaging straight-line winds with large hail are the main threats. Tornadoes are not expected, although they can't be ruled out entirely.

Paul Douglas noted in his blog for the Star Tribune that the Twin Cities has experience dry and rather comfortable Fourth of Julys the last five years, so we were probably due for day of excessive heat and severe storms on the holiday. 

Areas shaded in yellow in the map below have the highest chances to experience severe storms. 

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The heat will be an issue for some today as well. Temperatures will climb into the upper 80s and low 90s across southern Minnesota, and mixing the hot air with tropical dew points in the mid-70s will make it feel like it's 100-105 degrees outside in many areas. 

A heat advisory is in effect for a large portion of southern Minnesota while Hennepin and Ramsey counties are under an excessive heat warning from noon until 8 p.m. 

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