F0 tornado in Pinal County, Arizona

Tornado July 6, 1999 · Pinal County, Arizona

Rating

8.0 mi

Path length

20 yd

Path width

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The path drawn at its surveyed width of 20 yards (0.01 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What F0 means. This tornado was rated on Fujita’s original scale, used until 2007. F0 meant light damage: shingles and siding peeled, gutters torn, branches broken; the scale paired it with winds of 40–72 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.

What the National Weather Service wrote

Numerous sightings from Florence and Florence Jct as considerable dust and debris was carried aloft.

Began near Florence Jct (33.2700, -111.3300).

Source: NOAA Storm Events Database, event 5713066. Narratives are written by the National Weather Service forecast office that issued the report.

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