A History of Tornadoes in St. Louis

Geography and storm exposure

St. Louis is part of the central and southern Plains. Gulf moisture can meet a dryline, front and strong winds aloft, creating organized supercells. Geography influences storm boundaries and exposure, but terrain, rivers and buildings do not create a dependable tornado shield.

Long storm paths can cross several counties and city jurisdictions. This page uses the incorporated city as its population reference and the surrounding region for meteorological context; those boundaries answer different questions and are labeled separately.

Important tornadoes to place in context

These events are starting points, not a claim that every path crossed St. Louis's incorporated limits. Tornadoes are surveyed by path and county; metropolitan labels in news coverage often describe a broader area.

Why the historical record changes over time

Older records favor destructive tornadoes that crossed settled places. Radar, trained spotters, phones and systematic damage surveys now capture many weak or brief events that earlier observers could miss. Apparent increases can therefore reflect detection and urban growth as well as weather variability.