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 1-2, 2010
Thunderstorms & Flooding

A slow-moving cold front interacted with an unseasonably moist late-spring airmass over the Ohio Valley May 1 and 2. This led to numerous rounds of rain and thunderstorms, some of which produced widespread heavy rain. The heaviest rain fell across southern Ohio and Kentucky, where numerous reports of flooding were received. Rainfall amounts ranged from 1-2" across southern and central Ohio, to 2-4" near and south of the Ohio River, with some reports exceeding 5".