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May 4, 2011 / Dave Gorham

Flooding: No Respite

Significant River Flooding Continues in the Ohio and Mississippi Valleys

More Tranquil Weather Expected Elsewhere in the U.S.

Rain showers and a few embedded thunderstorms will continue to push toward the Eastern Seaboard by the midday and early afternoon hours today, as a cold front finally moves offshore. While there will not be a widespread threat of any strong-to-severe thunderstorms, a few storms could locally produce isolated lightning strikes, small hail, gusty winds, and brief downpours from the Mid-Atlantic southward through the Carolinas and the Southeast. By later this afternoon activity will mostly be offshore, though a lingering boundary coupled with daytime heating may produce a slightly higher chance of showers and thunderstorms over central and southern Florida.

Image: ImpactWeather StormWatch Meteorologist Mike Venske

Over the next several days, weather more quiet in nature will take hold over much of the United States as the upper-level flow pattern weakens. However, the story that will continue to make headlines into next week will be the ongoing flood situation across the Ohio and Mississippi River Valleys. Recent rainfall along with extremely saturated ground will allow rivers to rise to near-record or historic flood levels from Indiana, Kentucky, and Illinois through southeastern Missouri, western Tennessee, eastern Arkansas, western Mississippi, and into Louisiana as a series of weak disturbances pushing across the Midwest, Great Lakes, and Ohio Valley will bring additional rain showers late this week and through the upcoming weekend. Already levees along rivers are being weakened and/or breached, with widespread areas of farmland and populated communities being threatened in these areas. The threat will continue through at least the middle of May, with river stages likely remaining above official flood levels through the beginning of June.










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