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EF1 tornado in Warren County, Missouri

Tornado March 6, 2017 · Warren County, Missouri

EF1
Rating
20.9 mi
Whole path
150 yd
Path width

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 150 yards (0.09 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

After crossing into Warren County from Montgomery County, it destroyed a barn and garage on Engemann Farm Road. The tornado continued east causing damage to trees along Case Road and then expanded as it crossed Massas Creek Road to nearly 150 yards. It is at this point that the greatest tree damage occurred with numerous trees uprooted, twisted and snapped in a convergent pattern near the creek. The tornado then crossed Highway B and Centennial Drive with more large trees uprooted and some minor damage to outbuildings and residences noted. The tornado continued east, destroying a pole barn west of Hickory Health Ranch Road, and uprooting more trees along State Highway EE and Missouri Highway U. The tornado crossed Highway 47 south of Warrenton causing roof damage to a building of a private campground and then dissipated east of the campground in rural Warren County. Overall, there was a continuous path of damage observed from Rhineland (Montgomery County) to two miles south southeast of Warrenton, Missouri (east of Missouri Highway 47- Warren County). It was rated EF1 with a path length of 21 miles and a max path width of 150 yards.

The wider storm

As a cold front moved across the region, a squall line developed and moved rapidly east across the forecast area. There were numerous reports of damaging winds, large hail and 8 tornadoes.

Began near Case (38.7358, -91.4178).

Other tornadoes from the same storm system

5 more tornadoes the National Weather Service filed under this storm episode.

Source: NOAA Storm Events Database, event 686666. Narratives are written by the National Weather Service forecast office that issued the report.

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