Active Weather
Minnesota carries the sharper of today's two risks. The Storm Prediction Center's slight risk area runs from the South Dakota and Minnesota border into central Minnesota, and the discussion is unusually specific about what the storms could produce: hail up to about 2 inches across and wind gusts above 75 miles per hour.
Two inch hail is roughly the size of a hen's egg and will damage vehicle glass and roofing. Gusts above 75 miles per hour will take down healthy tree limbs and can bring down whole trees onto lines. Forecasters expect supercells at first, possibly organizing later into a bow echo, which is the storm structure that produces a long swath of wind damage along one line rather than damage in isolated spots.
The setup depends on an upper level impulse meeting surface moisture and strong wind shear, listed at 50 knots of effective bulk shear. Forecasters kept the probabilities at slight risk rather than raising them, noting the forcing is subtle and the guidance is not in full agreement. That is worth reading plainly: this could stay scattered, or it could organize.
The second area covers the eastern Ohio Valley into the Mid-Atlantic, which reaches Ohio and eastern Indiana. The Storm Prediction Center expects at least scattered severe wind producing storms there. Probabilities across both areas are 15 percent for damaging wind, 15 percent for large hail, and 2 percent for a tornado within 25 miles of a point.
Illinois, Michigan, and Wisconsin sit between the two areas and have no named severe risk drawn over them today.
The useful actions in Minnesota are the ones you take before afternoon: park under cover if you have it, bring in what a strong gust would move, charge phones, and make sure you have a way to receive a warning that works if the power goes out. A battery or hand crank weather radio does that. A phone with a dead battery does not.
Infrastructure
The National Interagency Fire Center's September 1 situation report lists no large uncontained fires in the six states.
Power outages are the realistic infrastructure item today, and they would come from this afternoon's storms in Minnesota and Ohio rather than from anything currently in progress.
If an outage does lead you to run a portable generator, the Consumer Product Safety Commission's guidance is operate outdoors only, at least 20 feet from homes and buildings, exhaust directed away from windows, doors, and vents, with working carbon monoxide alarms on every level of the home and outside sleeping areas, tested monthly. If an alarm sounds, get outside immediately and then call 911. That is from the Commission's May 27, 2026 release and its generator safety publication, checked today.
Public Health
No public health advisories specific to the Great Lakes were confirmed this run. The Centers for Disease Control and Prevention's Health Alert Network archive could not be read without JavaScript, so this brief makes no claim about national health advisories in either direction.
Watch Item
This is the third day in a row that severe weather has been in the forecast across the Upper Midwest. Severe thunderstorm watches covered parts of Minnesota, South Dakota, Iowa, and Nebraska on September 1, and today's slight risk sits over much of the same ground. A repeated pattern is worth noticing because it means trees and lines that were stressed on Tuesday are being stressed again today.
The seasonal turn here is the useful frame for September. Severe storm season is winding down and winter storm season is roughly two months out. That makes this the month for the maintenance that gets skipped: servicing a furnace, confirming that carbon monoxide alarms are present and working, and getting fuel arrangements settled before demand peaks.
Drought is the slower item and it moved the wrong way this period. The United States Drought Monitor released September 2, using data through August 25, noted worsening conditions in the Upper Midwest specifically. Across the lower 48 states, 56.61 percent of the land area is in drought. For this region that matters most to well water and to autumn fire risk in dry vegetation, neither of which changes overnight.
Explore Today
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Heating season is roughly two months out. Furnaces, fuel, and the safety checks that go with them.