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EF0 tornado in Marshall County, Indiana

Tornado July 20, 2018 · Marshall County, Indiana

EF0
Rating
0.5 mi
Path length
50 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 50 yards (0.03 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF0 means. On the Enhanced Fujita scale, EF0 is light damage: shingles and siding peeled, gutters torn, branches broken, consistent with estimated gusts of 65–85 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

Drone pictures indicate that a disorganized tornado touched down southwest of the intersection of County Road 6B and Ironwood Road. The NW corner of a barn suffered damage to a cinder block wall. Corn was observed laid down in a semi convergent pattern as the tornado moved northeast across 6B and eventually Ironwood Road where some tree branches were broken along Issac Sells Ditch. The tornado lifted at this point with no further damage noted.

The wider storm

Deep low pressure was located over Wisconsin with a warm front extending across northern Indiana. 1000 to 2000 J/KG MLCAPE advected in with area of clearing with effective helicity values in excess of 200 m2/s2. Several strong to severe storms developed with intense microbursts in a few spots as well as a weak tornado.

Began near Lake of the Woods (41.3823, -86.2197).

Other tornadoes from the same storm system

1 more tornado the National Weather Service filed under this storm episode.

EF0 Wabash County

Source: NOAA Storm Events Database, event 771898. Narratives are written by the National Weather Service forecast office that issued the report.

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