National Weather Service United States Department of Commerce

Major Winter Storm Ongoing in the Upper Midwest; Severe Weather Tonight from the Mid-South to the Ohio Valley

A major winter storm will continue to bring blizzard conditions, heavy snowfall, icing, and strong winds through Monday across the Upper Midwest and Upper Great Lakes. A line of storms will be capable of producing widespread damaging winds, tornadoes, and some large hail from the Mid-South to the Ohio Valley and the Southeast through tonight, moving into the Mid-Atlantic Monday. Read More >

A Red Flag Warning has been issued for 1100 AM to 700 PM Thursday March 19, 2026, for northeastern Wyoming and much of western South Dakota. Dry fuels combined with the following weather ingredients will lead to critical fire weather conditions. 1) Minimum relative humidity as low as 10%. 2) West winds 10-20 mph with gusts from 25-35 mph. 3) Anomalously warm temperatures. Confidence is high. ACTION: Do not burn outdoors. Never throw cigarettes out of a vehicle. Do not drive over dry grass. Don’t be an ignition source.