What severe weather is expected in St. Louis on Monday?

Severe Weather Threats for Monday

St. Louis is in the bullseye for Monday's severe weather outbreak, with forecasters warning of strong, potentially violent tornadoes, large hail up to golf ball or baseball size, and widespread damaging winds. Two rounds of storms are expected: an initial round of supercells in the afternoon followed by a second round that may organize into a squall line later in the day. The strongest storms may be capable of producing EF-3 or stronger tornadoes.

Risk Assessment and Coverage Area

A Level 3 out of 5 risk for severe thunderstorms is in place Monday across eight states including Missouri, with St. Louis experiencing some of the greatest impacts. The threat zone covers more than 55 million Americans across the Midwest and Mississippi Valley. A broader Level 2 risk extends from the Central Plains through the Ohio Valley and into the Southeast, affecting major cities including Chicago, Indianapolis, Memphis, and Little Rock.

Context of Multi-Day Outbreak

Monday's severe weather represents the dangerous peak of a multi-day outbreak that has already produced over 50 tornado reports since Thursday. A violent EF-4 tornado tore through Enid, Oklahoma on Thursday with winds estimated at 170-175 mph. Deadly tornadoes also struck North Texas on Saturday, including an EF-2 tornado near Runaway Bay that killed at least two people.