Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. 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".