Rounds of severe thunderstorms, flooding to impact Midwest, Northeast through weekend
Severe thunderstorms will bring damaging winds and flash flooding from the Midwest to the Northeast through this weekend, including in Chicago and Pittsburgh.
Severe storms swept through Indiana on Aug. 12, bringing torrential rain, high winds and flash flooding to multiple communities and prompting evacuations and road closures.
Just days after damaging winds and flooding affected much of the Midwest, additional rounds of severe thunderstorms and flooding are expected across portions of the Midwest and Northeast through this weekend.
Significant severe weather has already occurred in parts of the Midwest this week, including a deadly derecho that packed 99-mph winds and left more than 800,000 without power.
Flooding occurred from eastern Iowa to West Virginia on Friday. Flash flooding is expected from Des Moines, Iowa, eastward into northern Illinois and Indiana through Saturday. Recent heavy rainfall has left some areas especially susceptible to renewed flooding, particularly where thunderstorms repeatedly move over the same locations. Urban, low-lying and poor-drainage areas will face the greatest flooding risk. Flooded roads and travel delays can occur, including along Interstate 80.
Severe thunderstorms to impact Midwest Saturday
Another cluster of thunderstorms is expected to develop on Saturday across portions of the Midwest, Ohio Valley and mid-Atlantic, bringing the risk of damaging winds, flooding rainfall and disruptions to outdoor activities. A tornado or two also cannot be ruled out. Thunderstorms capable of producing gusty winds and hail will extend into eastern Colorado as well.
"Yet another round of damaging wind gusts and flooding rainfall can impact the Chicago area on Saturday before drier conditions return later in the weekend, giving hard-hit homeowners and business owners a break from the repeated rounds of storms earlier in the week," AccuWeather Senior Meteorologist Dan Pydynowski said.
Severe thunderstorm risk shifts east Sunday
The risk of severe thunderstorms will shift east into portions of Ohio, Pennsylvania, West Virginia and Virginia during the second half of the weekend. Localized damaging wind gusts between 55 and 65 mph and flash flooding will be the main hazards with the strongest thunderstorms. The greatest flooding risk will be in urban locations, including Pittsburgh.
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