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EF2 tornado in Grant County, Minnesota

Tornado August 14, 2020 · Grant County, Minnesota

EF2
Rating
13.4 mi
Path length
150 yd
Path width
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 EF2 means. On the Enhanced Fujita scale, EF2 is considerable damage: roofs torn off well-built houses, mobile homes destroyed, large trees snapped or uprooted, consistent with estimated gusts of 111–135 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 was the fourth of five tornadoes in Grant County. The tornado crossed U. S. Highway 59 about two miles south of Elbow Lake, the south end of Pomme de Terre Lake, and the Tipsinah Mounds Golf Course. It snapped and uprooted numerous trees, several power poles, and ravaged corn fields. It tore down a small tower, roofing, and roof sections from homes and a golf course clubhouse. Peak winds were estimated at 115 mph.

The wider storm

During the very early morning hours of Friday, August 14th, sporadic slow moving severe thunderstorms formed across portions of west central Minnesota. These resulted in reports of large hail, strong wind gusts, and flash flooding. Prior to sunrise and through Friday morning, additional storms developed back westward into southeast North Dakota, and they continued to fire across west central Minnesota. These storms continued to produce large hail, gusty winds, and flash flooding. By mid-afternoon, an area of surface low pressure tracked through west central Minnesota, dragging a cold front behind it. Five tornadoes occurred during this period across Grant County, Minnesota.

Began near Herman Muni Arpt (45.9100, -96.0800).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 911084. Narratives are written by the National Weather Service forecast office that issued the report.

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