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 >

May 12, 2010
Heavy Rain & Flooding

A frontal boundary stalled near the Ohio River during the morning of May 12. This led to numerous rounds of thunderstorms which dropped widespread heavy rain across parts of southern Ohio, southeast Indiana and northern Kentucky. Widespread rainfall amounts in excess of 2 inches were common, with some reports over 3 inches. This same area was hit with heavy rain just a week prior, which made it particularly prone to flooding. Several reports of flash flooding were received including numerous road closures and streams overflowing their banks.


Estimated Event Rainfall (Inches)