Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

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Last Map Update: Tue, May 19, 2026 at 10:48:25 pm PDT

Watches, Warnings & Advisories

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Gale Warning

Small Craft Advisory

Hazardous Seas Warning

Memorial Day Weekend Outlook

Cold Water Safety

Summer like conditions are expected for the majority of the week and through the holiday weekend. Morning clouds along the coast are likely, but should give way to sunshine by the afternoon. Inland temperatures are expected to be 10-15 degrees above normal through Sunday. Weak instability in the region brings about a 10% chance of thunderstorms across northern California for Friday and Saturday afternoons. Conditions could begin to change on Memorial Day. We’re watching for the potential for a cold low pressure system to move into the Pacific Northwest Monday into early next week, which could bring a 10-15 degree cooling trend on Monday along with increasing rain chances later in the day. Stay tuned as details become more clear over the coming days.