Thunderstorms with heavy rain are expected to develop late Thursday morning through Thursday evening in the Cascades. Heavy rainfall in steep terrain and burn scars may lead to flash flooding or debris flows on Thursday. * WHAT. Flash flooding and debris flows caused by excessive rainfall from thunderstorms is possible. * WHERE. A portion of North Central Washington, including the following counties, Chelan and Okanogan. This will include, but not limited to burn scar locations: Pioneer and 25 Mile burn scars in Chelan County, and Cedar Creek, Cub Creek, Muckamuck, Walker Creek, and Eagle Bluff burn scars in Okanogan County. * WHEN. From Thursday morning through Thursday evening. * IMPACTS. Heavy rainfall may result in flash flooding or debris flows in steep terrain, particularly near burn scar locations. Rain rates of up to an inch per hour will be possible with thunderstorms. * ADDITIONAL DETAILS. - Those within canyons or near burn scars should monitor for updated information from local authorities. - http://www.weather.gov/safety/flood
