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EF1 tornado in Kandiyohi County, Minnesota

Tornado September 19, 2017 · Kandiyohi County, Minnesota

EF1
Rating
12.6 mi
Whole path
550 yd
Path width
$1.6M
Damage as recorded

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 550 yards (0.31 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 moved out of Swift County and into northwestern Kandiyohi County. It knocked down trees, damaged crops, and destroyed two machine sheds at a farm.

The wider storm

A strong and potent upper level disturbance, combined with a cold front sweeping across the eastern Dakotas, fired a line of severe thunderstorms that moved eastward into western Minnesota toward midnight. This line of storms continued to progress east-northeast across southern and central Minnesota, which produced fast-moving tornadoes, severe measured wind gusts, and hail as large as tennis balls. This line slowly weakened as it moved into far eastern Minnesota, with general, non-severe thunderstorms as the line progressed into west central Wisconsin after 3 am.

Began near Sunburg (45.3549, -95.2553).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 722106. Narratives are written by the National Weather Service forecast office that issued the report.

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