Severe thunderstorms capable of producing high winds and flash flooding will sweep across the Midwest during Wednesday and Thursday.
The storms will erupt as an uptick of warmth and humidity from the Southern states is met by a push of cooler and less humid air from the northern Rockies.
"There is the potential for a complex of severe thunderstorms to develop over part of the central and northern Plains on Wednesday," according to AccuWeather Lead Storm Warning Meteorologist Eddie Walker.
Winds strong enough to down trees and power lines are possible, while enough rain can fall at a fast enough pace to cause flash and urban flooding. Flooding can occur even in areas that have been experiencing abnormally dry conditions in recent weeks.
In addition to the high wind and flooding threat, a few of the storms could produce large hail.
"If this complex of thunderstorms develops, it could travel a long distance, perhaps reaching as far to the east as Michigan on Thursday," according to AccuWeather Storm Warning Meteorologist Richard Schraeger.
"As a result, people from Chicago and Milwaukee to Detroit could be affected by disruptive and dangerous storms Thursday," Schraeger said.
As the storms approach the major airports, significant airline delays are likely.
Storms will also continue to erupt farther south and west.
Areas from Michigan and northern Ohio and southwestern Ontario to northern and eastern Colorado could be dealing with severe weather, travel delays and disruptions to outdoor activities on Thursday.
The greatest risk for a small number of tornadoes will be over parts of the Plains on Thursday.