This study was supported by the National Weather Service Office of Hydrology under cooperative agreement with the Iowa Institute of Hydraulic Research (NA47WH0495). We would like to thank Dr. Mircea Grecu for his assistance with the computer code and Dr. Grzegorz Ciach for many helpful discussions. We are grateful to the Oklahoma Climatological Survey and the Oklahoma EPSCoR program for providing the rain gauge data from the Oklahoma Mesonet.
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