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EF1 tornado in Harrison County, Missouri

Tornado June 28, 2017 · Harrison County, Missouri

EF1
Rating
16.4 mi
Whole path
75 yd
Path width

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 75 yards (0.04 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

This tornado is a continuation of the tornado that moved out of Gentry County. This tornado moved through mainly rural parts of Harrison County, where it produced mostly damage to trees. There was a structure west of Bethany that sustained some EF-1 damage. Otherwise the damage was EF-0 with this tornado across the county.

The wider storm

On the evening of June 28 a complex of supercell thunderstorms moved into northern Missouri, producing widespread large hail and damaging winds, mainly north of Interstate 70. These storms also produced at least 3 tornadoes, all north of Highway 36. The strongest damage was located in Harrison County where some low-end EF-1 damage to a residence occurred. Otherwise, the damage was confined to tree damage to rural parts of Harrison, Gentry, and Nodaway Counties. Heavy rain and slow movement of the complex contributed to some flash flooding across northern Missouri. There were no known injuries with this evening's event.

Began near New Hampton (40.2815, -94.2156).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 710679. Narratives are written by the National Weather Service forecast office that issued the report.

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