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Moderate risk of flash flooding tonight

May 12, 2010

There is a moderate risk of flash flooding tonight, according to the Hydrometorological Prediction Center.

The Carol Stream area received about 1.1″ of rain last night, and 2″ of rain in the last 7 days. This has left the ground saturated, and water levels high on creeks and lakes in the area.

An additional 1-2″ of rain is possible tonight, with a total of 2.5-3″ of rain possibly by Friday morning. This may result in lowland flooding.

UPDATE: A flood watch is now in effect until late Thursday night, and likely early Friday morning. According to the HPC, some isolated locations may receive 3-5″ of rain. This would result in widespread lowland flooding.

UPDATE 2: As of 11:00 PM, flash flood guidance values for tonight are 2.5 inches in 1 hour, 2.9 inches in 3 hours, and 3.2 inches in 6 hours. If any of these values is exceeded in the given time frame, flash flooding may result.

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