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Tornado in Marathon County, Wisconsin

Tornado August 31, 1977 · Marathon County, Wisconsin

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Not rated

31.8 mi

Path length

1,000 yd

Path width

Injuries

$2.5M

Damage as recorded

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 1,000 yards (0.57 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

Not rated. NOAA lists no rating for this tornado. Ratings come from surveying damage, and the National Weather Service now records “EFU” (unknown) when a tornado hit nothing a survey team could rate.

NOAA’s online database has no written narrative for tornadoes before 1996 — just the numbers above, transcribed from the original storm logs. Written accounts from this era do exist in NOAA’s monthly Storm Data publications (scanned, back to 1959).

Source: NOAA Storm Events Database, event 10148271. Narratives are written by the National Weather Service forecast office that issued the report.

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