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 18-19, 2020
Severe Weather & Widespread Flooding
A slow-moving stacked/deep and cutoff low pressure system moved into and subsequently stalled in the Ohio and Tennessee Valleys from the 18th through the 21st of May. This resulted in repeated rounds of heavy rain and training storms, which yielded multiple periods of heavy rain that moved over the same areas within a 72-hour period. Most of the heavy rain fell from late on the 18th through the 19th, with numerous reports of 4-5+ inches, with isolated higher amounts, both in Delaware/Franklin counties in central Ohio and Butler/Hamilton in southwest Ohio and Campbell/Kenton/Pendleton in northern Kentucky.