After Imelda dropped
torrential rainfall across Texas and Louisiana, the flood threat now moves north to the Midwest United States.
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Flash flood watches have been issued for parts of Kansas, Missouri, Nebraska, Illinois and Iowa in anticipation of the heavy weekend rain. A flash flood watch means there is a heightened potential for flash flooding in the near future and you should be prepared to take action, if needed. On the other hand, a flash flood warning means that high water has already occurred or will shortly and you need to take action now.
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The heaviest rain will occur between Saturday night and through the day Sunday. Total rainfall will be in the 3 to 6 inch range, however it's not just about the overall amounts. This is tropical moisture that will come down very heavily during a short amount of time. We're more concerned about rainfall rates, of which will reach 1-2 inches per hour at times this weekend. That's when the fastest flooding occurs (flash flooding).
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This weekend's rainfall will be associated with the remnant moisture from Tropical Storm Imelda. The storm is no longer a tropical entity and has dissipated, but the moisture it carried inland is still hanging around. The moisture will meet up with a slow-moving cold front and dump out of the sky via downpours this weekend.
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The conditions should start to clear Monday, but not before areas see high water. Stay weather aware and weather ready this weekend!