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 >

July 16-17, 2017
Severe Weather & Heavy Rain/Flooding

During the evening of July 16th into the early morning hours on the 17th, several clusters of storms developed in an environment characterized by moderate instability but only marginal wind shear. The storms produced many swaths of small hail and even some reports of large hail as they moved south-southwest through the area. With relatively weak mean-layer flow, the storms were slow-moving and backbuilding of storm cores resulted in several areas of very heavy rain. Although rainfall amounts generally ranged between 1-2 inches (in areas that received rain), there were a few reports exceeding 3 inches. Several reports of flooding and flash flooding were reported across the northern Miami Valley into parts of east-central Indiana. The storms eventually dissipated in the middle of the night as instability eventually diminished.