Cristobal remnants reach Wisconsin, fuel severe weather threat from Great Lakes to Northeast

The remnants of Tropical Storm Cristobal reached Wisconsin Tuesday night after lashing the South, setting the stage for possible severe weather Wednesday.

What's left of Cristobal has merged with another storm system, which is now threatening more damaging weather from the eastern Great Lakes to parts of the Northeast.

On Wednesday, areas from central Michigan eastward through Ohio and into western New York are most likely to see severe weather.

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Storms on Wednesday bring the risk of very strong winds, locally heavy rainfall and the risk of tornadoes.

The greatest threat for severe weather on Wednesday.

The greatest threat for severe weather on Wednesday. (Fox News)

The greatest risk of tornadoes is from southeastern Michigan into Ohio.

The National Weather Service's (NWS) Storm Prediction Center (SPC) said that more than 41 million people could see severe weather on Wednesday, with 8 million under a moderate risk. That includes Detroit and Toledo, Ohio.

Tropical Depression Cristobal is merging with another storm system, setting the stage for severe weather in parts of the Midwest.

Tropical Depression Cristobal is merging with another storm system, setting the stage for severe weather in parts of the Midwest. (Fox News)

The storm system that merged with Cristobal will intensify Wednesday and lift into Canada by Thursday.

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Cristobal on Tuesday became the fourth tropical system in recorded history to reach Wisconsin, but all prior storms only clipped the far southeastern part of the state.

The fact that this tropical system lifted so far north is remarkable.

As Cristobal moved north, heavy rain and gusty winds were reported across the region.

Storm damage reports as Cristobal moved northward into Wisconsin.

Storm damage reports as Cristobal moved northward into Wisconsin. (Fox News)

Chicago's Midway International Airport reported a wind gust of 62 mph and trees were downed in the city.

Cristobal will merge with another storm system as a powerful cold front will sweep through the Northeast by Thursday.

Cristobal will merge with another storm system as a powerful cold front will sweep through the Northeast by Thursday. (Fox News)

Electricity provider Commonwealth Edison reported about 19,000 without power in northeastern Illinois late Tuesday. Thousands also lost power in southeast Wisconsin, The Milwaukee Journal Sentinel reported.

As the remnants passed through Milwaukee, many of the outages were caused by trees and branches hitting power lines.

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Boaters also were warned of gale-force winds on Lake Michigan through Wednesday.

Elevated fire threat across Plains

The national forecast for June 10.

The national forecast for June 10. (Fox News)

High winds from the storm system brought breezy conditions from Nebraska to Wisconsin.

In parts of Iowa, Minnesota and South Dakota, the gusty winds and low humidity on Wednesday will bring the threat of wildfires in areas with dry grass.

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Temperatures also will warm up the rest of the week, adding to the fire threat.

Fox News' Brandon Noriega contributed to this report.