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Diagnosis of the July 6 2002 Ogallala, Nebraska flash flood.(Report)
- Article from:
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National Weather Digest
- Article date:
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December 1, 2007
- Author:
- Radell, David B.; Anderson, Mark R.; Stoppkotte, John W.; McCormick, James R.
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Copyright informationCOPYRIGHT 2007 National Weather Association. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Abstract
During the early morning hours of 6 July 2002, a mesoscale convective system (MCS) traversed southwestern Nebraska and produced more than 40 cm of precipitation, resulting in a flash flood that closed Interstate 80 and caused one fatality near Ogallala, Nebraska. Regional climatology yields that this flash flood ranked first in precipitation amount for a 24 hour period over the past one hundred years. Synoptic and mesoscale features similar to other flash flooding events and conducive to extremely heavy precipitation were in place over the Central Plains, including a weak upper level ridge, high precipitable water values (180% of normal), significant moisture ...