* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of north central and northwest Ohio, including the following counties, in north central Ohio, Erie and Huron. In northwest Ohio, Lucas, Ottawa, Sandusky and Wood. * WHEN...Through this afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Showers and thunderstorms with periods of torrential rain rates will continue to occasionally affect the area through this afternoon. Rain rates of greater than 2 inches per hour are possible with thunderstorms, which can quickly result in flooding in prone areas. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information.