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EF1 tornado in Davis County, Utah

Tornado September 2, 2021 · Davis County, Utah

EF1
Rating
2.0 mi
Path length
350 yd
Path width
$750K
Crop damage
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 350 yards (0.20 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

A tornado first touched down in North Salt Lake at Redwood Road and 900 W around 628 PM MDT. The tornado moved to the northeast through a mix of industrial and residential areas. The tornado produced EF0 damage (winds 65 to 85 MPH) to numerous trees and several homes in the Cloverdale neighborhood. The tornado continued to move off to the northeast, producing more EF0 damage to the Woods Cross Public Works building and a nearby construction site. The tornado reached peak intensity along 1100 W, producing EF1 damage (winds 86 to 110 MPH) where it uprooted a healthy mature tree and leaned a wooden power pole. The tornado continued to the north, weakening, but still producing EF0 damage before lifting off the ground.

The tornado then made a second touchdown in a field near 800 W where it produced EF0 damage to a business in the area and began moving northward along 800 W. Tree damage and minor property damage indicative of an EF0 tornado was widespread along this swath. Large diameter tree limbs (in excess of 12 inches) were broken off and deposited throughout the area. The tornado then dissipated in the area of 1500 S and Interstate 15 around 634 PM MDT.

The rating for this tornado is EF1 with winds as high as 110 MPH. The tornado had an intermittent track length of about 2 miles over 7 minutes and a max-width of approximately 350 yards with an average width of approximately 150 yards.

The wider storm

Several rounds of thunderstorms brought severe weather hazards to the state of Utah, including flash flooding in southern and eastern Utah, and damaging winds, hail, and a tornado in Northern Utah.

Began near Bountiful Sky Hvn Ar (40.8575, -111.9304).

Source: NOAA Storm Events Database, event 986709. Narratives are written by the National Weather Service forecast office that issued the report.

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