Severe Thunderstorms and Heavy Rain from the Southern Plains to the Ohio Valley; Wintry Mix in the Northeast

Numerous showers and thunderstorms, some severe, are expected from the southern Plains to the Ohio Valley. The repeating nature of some showers and thunderstorms may lead to isolated flash flooding across the Ohio Valley. An area of freezing rain, with some snow on the northern edge, will cause hazardous travel conditions over portions of New England. Read More >

During the afternoon of July 5, 2006, an outbreak of severe thunderstorms along the east slopes of the Cascades resulted in significant flash flooding in and near Lake Chelan. The radar loop above depicts the track of several strong to severe thunderstorms between 400 pm PDT and approximately 630 pm PDT. Radar estimated between 2.5 and 3.0 inches of rain within about a 2 hour time span (see radar storm total precipitation image below). Runoff from the very heavy rain resulted in a significant rock/debris slide along Slide Ridge south of Lake Chelan. The slide damaged portions of South Lakeshore drive between Lake Chelan State Park and Twenty-five Mile Creek State Park.

Lakeshore Drive below Slide Ridge
Photos Courtesy of Patrick Lonergran

By Kerry Jones

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Severe Thunderstorms and Heavy Rain from the Southern Plains to the Ohio Valley; Wintry Mix in the Northeast

Slide Ridge Flash Flood Event - Chelan County, WA - July 5, 2006