Folks in the Midwest and western Great Lakes will want to take extra caution when heading outdoors or traveling early Tuesday night.
The strongest storms are forecast to fire along an area extending from southern Iowa and northern Missouri to northern Illinois and western Michigan Tuesday evening and push southward through the night.
"Storms that develop during the evening from northern Illinois to northern Kansas will become severe but will be more isolated in nature," said AccuWeather Lead Storm Meteorologist Phil Warren.
A few cities that could be in the path of Tuesday's storms include Davenport, Iowa; Kansas City, Missouri; Chicago, Illinois; Springfield, Illinois; Grand Rapids, Michigan; and South Bend, Indiana.
"Straight-line wind gusts, large hail, and localized flash flooding with be the main threats with this severe activity," Warren said.
Those gusty winds could topple trees and bring down power lines, forcing many in the dark.
Flash flooding could turn streets into rushing rivers, forcing travel delays on motorists. Folks are urged to find an alternative route if they encounter a flooded roadway.
Those taking to the air could be the most affected. "As the storms roll through, there is the risk of a ground stop and substantial flight delays," said AccuWeather Senior Meteorologist Kristina Pydnowski.
Remember, if you can hear thunder you are within striking distance of lightning. If you are caught out in a storm, seek shelter away from trees and open areas.
Sultry air clashing with a cold front will spark the dangerous storms in the region.
Temperatures last week were locked into the 70s across much of the region including Chicago. Tuesday's high hit 90 degrees making it the hottest afternoon of July so far.
The heat and humidity won't stick around for too long though. In addition to bringing storms on Tuesday, the front will also usher in refreshing air for Wednesday.
The steamy air, along with the severe weather threat, will shift to the Northeast through the Ohio Valley on Wednesday.
Content contributed by Andy Mussoline, Meteorologist
Severe storms will bring large hail and damaging wind gusts to parts of Colorado, Nebraska and Kansas on Monday.
Following a rain-free weekend for many in the Northeast, residents may be wondering if this is a sign of things to come for July.
The next round of thunderstorm downpours will swing into the Appalachians with the risk of isolated flash flooding on Monday.
Rounds of drenching thunderstorms could bring drought relief to parts of the southern United States into July.
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