National Weather Service United States Department of Commerce

Atmospheric River in the Pacific Northwest and Northern Rockies this Weekend

A Pacific storm and atmospheric river will impact the Pacific Northwest states and northern Rockies this weekend, bringing locally heavy low elevations rain and heavy high elevation snow in the mountains. By Sunday over the Interior Northwest, rain combined with snowmelt will increase the risk of flood hazards. Flood Watches are in effect. Read More >

July 13, 2017
Heavy Rain & Flooding

Clusters of showers and thunderstorms formed in the local area during the morning and early afternoon hours on July 13, in an environment that was nearly-tropical in nature. With surface dewpoints in the 70s and even close to 80°F at times, the strongest storms were able to produce very efficient high rain rates. Some of these storms trained, or travelled, over the same areas, resulting in periods of extremely heavy rainfall which lead to many reports of flooding and flash flooding, particularly in parts of central Ohio. John Glenn International Airport (KCMH) measured 3.11 inches for the day, with many other reports of 3-5 inches in the area. Parts of southwestern Ohio were also impacted by heavy rain and subsequent flash flooding.