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EF0 tornado in St. Francois County, Missouri

Tornado July 31, 2021 · St. Francois County, Missouri

EF0
Rating
0.9 mi
Path length
120 yd
Path width
$20K
Damage as recorded
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 120 yards (0.07 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF0 means. On the Enhanced Fujita scale, EF0 is light damage: shingles and siding peeled, gutters torn, branches broken, consistent with estimated gusts of 65–85 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

A brief, weak tornado first touched down just to the west of Turkey Mill Road in the late morning hours of July 31st. The tornado first did some damage to cedar trees along Turkey Mill, which were displaced over the roadway. The tornado then did some minor structural damage to a home on the east side of Turkey Mill, ripping off a few shingles and damaging the fascia. The tornado then continued to the southeast, completely uprooting a large walnut tree. The tornado completely destroyed a well built swing set, lofting parts of it nearly 100 yards into a pond and a nearby treeline. It also destroyed a well built vinyl fence, and did some minor roof damage to another home along Lober Farm Road. The tornado continued southeast, uprooting a couple of large trees as it moved towards Quail Run Road. Several large tree limbs were downed along part of Quail Run Road, before the tornado lifted as it approached State Route EE. The tornado was rated EF0 with a path length of 0.88 miles and a max path width of 120 yards. No deaths or injuries were reported.

The wider storm

A mesoscale convective complex moved across portions of eastern Missouri and west central/southwest Illinois. There were several reports of flash flooding, as well as a tornado.

Began near Ogborn (37.8200, -90.4000).

Source: NOAA Storm Events Database, event 975908. Narratives are written by the National Weather Service forecast office that issued the report.

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