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F1 tornado in Ottawa County, Oklahoma

Tornado February 9, 1960 · Ottawa County, Oklahoma

Rating

8.2 mi

Path length

200 yd

Path width

$250

Damage as recorded

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 200 yards (0.11 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What F1 means. This tornado was rated on Fujita’s original scale, used until 2007. F1 meant moderate damage: roofs badly stripped, mobile homes pushed off foundations or overturned, windows broken; the scale paired it with winds of 73–112 mph, figures later judged too high, especially toward the top of the scale, and revised downward in the Enhanced Fujita scale. Ratings then, as now, came from the damage.

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 10092800. Narratives are written by the National Weather Service forecast office that issued the report.

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