Flash flood warning issued for northern Perry County overnight
By the time the warning hit, 1.5 to 4 inches had already fallen over northern Perry County, with more rain still possible before dawn.
The National Weather Service issued a flash flood warning for Crawford County and northern Perry County at 1:47 a.m. EDT on June 27, effective from 10:47 p.m. EDT the night before. Flash flooding was ongoing or expected to begin shortly as thunderstorms dumped heavy rain across south central Indiana and left more water on the way.
The warning covered Crawford County and northern Perry County, where Doppler radar showed storms producing rain totals that had already reached between 1.5 and 4 inches in the warned area. Another 0.5 to 1.5 inches was still possible, with the main hazard listed as flash flooding from thunderstorms. The alert singled out small creeks and streams, highways, streets, underpasses and other low-lying or poorly drained areas, along with English, Carefree Town, Mount Pleasant, Marengo, Milltown, Leopold, Leavenworth, Alton, West Fork and Sulphur.
Water can rise fast in the Ohio River corridor and in valley terrain, and darkness makes it harder to spot flooded pavement, washed-out shoulders or water moving across an underpass. The warning meant travel delays, detours and a need to avoid low spots until roads were checked and conditions improved.
On June 19, Gov. Mike Braun declared a state of disaster emergency for 63 Indiana counties after flooding, severe weather, tornadic activity and a derecho that hit from June 9 through June 18. NWS Louisville, which covers 10 south-central Indiana counties, forecast another 1 to 3 inches of rain from a training band of heavy rain and thunderstorms, with isolated totals of 4 to 6 inches possible.
Indiana Department of Transportation monitors traffic restrictions and closures, and the Indiana Department of Natural Resources maintains floodplain mapping through the Indiana Floodplain Information Portal.
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