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Significant threat of flash flooding expected this week; severe weather possible tonight

June 1, 2010

A storm system organizing in Kansas will move east tonight and into north-central Illinois, bringing thunderstorms and heavy rain. The storm system is expected to evolve into a severe bow echo, bringing wind gusts of 70+ mph. In addition to large hail and very strong winds, 3 to locally 6 inches of rain may fall tonight somewhere in northern Illinois.

With the ground saturated from 1.13″ of rain yesterday, an additional 3 inches would result in closures for low-lying streets. If 6 inches of rain were to fall, it is likely that widespread damaging flooding would result, though not quite on the level of September 13-14, 2008.

Stay tuned to the latest forecasts, watches and warnings from the National Weather Service tonight for the latest information.

3:45 PM Update: A flash flood watch has been issued for the area.

7:45 AM 7/5 Update: 1.13 inches of rain fell in Carol Stream, for a storm total of 2.25 inches. This is not enough to cause widespread flooding issues in the village.

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