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EF1 tornado in Jefferson County, Missouri

Tornado April 18, 2024 · Jefferson County, Missouri

EF1

Rating

7.8 mi

Whole path

40 yd

Path width

$100K

Damage as recorded

NOAA records this tornado county by county. Its path ran through St. Louis County → Jefferson County; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 40 yards (0.02 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF1 means. On the Enhanced Fujita scale, EF1 is moderate damage: roofs badly stripped, mobile homes pushed off foundations or overturned, windows broken, consistent with estimated gusts of 86–110 mph. The rating comes from a survey of the worst damage after the storm, not from a wind measurement, so it says as much about what the tornado hit as about how strong it was.

What the National Weather Service wrote

The tornado touched down in a subdivision southwest of Eureka in rural St. Louis County where it caused minor tree damage. The tornado moved east across the Meramec River into Jefferson County where it damaged two large metal outbuildings and snapped wooden electrical poles on Twin River Rd Between the Meramec and Big Rivers. The tornado continued to the east where it caused tree damage before lifting southeast of High Ridge.

The wider storm

During the afternoon and evening of April 18, 2024, discrete supercell thunderstorms developed along a cold front moving through the bi-state area. These storms were initially capable of producing large hail and damaging wind gusts, but became tornadic as additional thunderstorms formed along the front. Due to the additional thunderstorms, storms congealed into a QLCS that impacted the St. Louis metro area. The QLCS was responsible for a tornado and straight line wind damage in this area. Fortunately, no injuries or fatalities were reported with these thunderstorms.

Began near Hoene Spg (38.4630, -90.6570).

Source: NOAA Storm Events Database, event 1172632. Narratives are written by the National Weather Service forecast office that issued the report.

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