Monday, 15 April 2013

Heavy rains headed for the eastern Great Lakes

Heavy rains headed for the eastern Great Lakes, It is warm and breezy across much of the region this afternoon as a strong and broad southwesterly flow transports milder air northeastward across the region.

A cold front will move eastward into the Great Lakes tonight, then settle southward into the Ohio Valley on Tuesday, where it will become stationary. Clouds will increase through this evening as this system approaches. Scattered showers and thunderstorms will spread northeastward across the region later tonight and continue through the day on Tuesday.

View slideshow: Eastern Great Lakes Daily Weather Graphics April 15, 2013
Tuesday night and Wednesday the front will lift back to the north as a warm front as low pressure develops across the mid Mississippi Valley. Occasional rounds of showers and thunderstorms will continue across the region through Wednesday.

By Thursday, deep low pressure will track northeastward into the Great Lakes. This will produce a swath of very heavy rainfall from Indiana and Illinois, northeastward through lower Michigan, and possibly northwestern Ohio. Rivers and streams are already running high in these areas and additional heavy rainfall will only add to the flood threat.

Computer models are indicating the potential for 2 to 4 inches of rain over the next several days across lower Michigan, with lesser amounts further to the east. This amount of rain falling on already saturated ground could cause flooding.

There is still some uncertainty regarding rainfall amounts and the location of heaviest rainfall. Be sure to stay tuned for additional updates and be prepared to take action should flooding develop.

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