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Dangerous Weather Peppers U.S. Northern-Tier
August 16, 2025 at 04:32 AM EDT
UPDATED by WeatherBug Meteorologists
Gusty thunderstorms, large hail, and even a few tornadoes are on the menu across the northern U.S. throughout this evening and tonight.
A slow-moving cold front will shift farther south through the Dakotas, Minnesota, and northern Wisconsin this evening. This front is separating a very warm and humid air mass to the south from a cooler and drier air mass to the north. Add in a couple fast-moving disturbances aloft, and the ingredients for dangerous weather will persist during the next several hours across the U.S. Northern-Tier.
Severe Thunderstorm Watches are in effect across eastern South Dakota into southern Minnesota.
Large hail up to golf ball size and scattered damaging wind gusts up to 70 mph will be the primary concerns. An isolated tornado or two cannot be ruled out, however. Brief downpours could trigger localized flooding concerns through tonight. Remember, if you approach a flooded roadway, “Turn Around, Don’t Drown!”
The greatest severe weather danger zone from far northern Nebraska and South Dakota to central Wisconsin and northwestern Iowa. Minneapolis, La Crosse, Wisc., Pierre and Sioux Falls, S.D., Mason City and Cedar Rapids, Iowa, could be peppered by a dangerous storm encounter. Milwaukee and Green Bay, Wis., Duluth, Minn., Aberdeen and Rapid City, S.D., and Norfolk, Neb., to Chicago, will have to keep a watchful eye to the sky as well.
Make sure to know the difference between a watch and a warning should they become issued. A “watch” means that conditions are favorable for severe weather to occur and to be on alert for any rapidly changing conditions. A “warning” means that severe weather is imminent, and you should act fast to remain safe.
The best way to remain safe is to stay prepared and informed about your local weather. Have a severe weather kit packed with a battery-operated radio, water, and non-perishable food items should you be without power for long periods of time. Also, check the WeatherBug app frequently for any updates on today's severe weather. Remember, "When Thunder Roars, Go Indoors!"
A slow-moving cold front will shift farther south through the Dakotas, Minnesota, and northern Wisconsin this evening. This front is separating a very warm and humid air mass to the south from a cooler and drier air mass to the north. Add in a couple fast-moving disturbances aloft, and the ingredients for dangerous weather will persist during the next several hours across the U.S. Northern-Tier.
Severe Thunderstorm Watches are in effect across eastern South Dakota into southern Minnesota.
Large hail up to golf ball size and scattered damaging wind gusts up to 70 mph will be the primary concerns. An isolated tornado or two cannot be ruled out, however. Brief downpours could trigger localized flooding concerns through tonight. Remember, if you approach a flooded roadway, “Turn Around, Don’t Drown!”
The greatest severe weather danger zone from far northern Nebraska and South Dakota to central Wisconsin and northwestern Iowa. Minneapolis, La Crosse, Wisc., Pierre and Sioux Falls, S.D., Mason City and Cedar Rapids, Iowa, could be peppered by a dangerous storm encounter. Milwaukee and Green Bay, Wis., Duluth, Minn., Aberdeen and Rapid City, S.D., and Norfolk, Neb., to Chicago, will have to keep a watchful eye to the sky as well.
Make sure to know the difference between a watch and a warning should they become issued. A “watch” means that conditions are favorable for severe weather to occur and to be on alert for any rapidly changing conditions. A “warning” means that severe weather is imminent, and you should act fast to remain safe.
The best way to remain safe is to stay prepared and informed about your local weather. Have a severe weather kit packed with a battery-operated radio, water, and non-perishable food items should you be without power for long periods of time. Also, check the WeatherBug app frequently for any updates on today's severe weather. Remember, "When Thunder Roars, Go Indoors!"