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F0 tornado in Clay County, Arkansas

Tornado January 21, 1999 · Clay County, Arkansas

F0
Rating
12.0 mi
Path length
50 yd
Path width
$5K
Damage as recorded
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 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

The tornado started east of Knobel and continued northeast. The tornado may have come up and down several times. One home had damage to its roof and porch south of the town of Walnut Grove.

Began near Knobel (36.3200, -90.5800).

Other tornadoes from the same storm system

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

F4 Clay CountyF3 St. Francis CountyF3 Lawrence CountyF2 Clay CountyF1 Greene CountyF1 Clay CountyF0 Cross CountyF0 Lee CountyF0 St. Francis CountyF0 Lawrence CountyF0 St. Francis CountyF0 Lawrence CountyF0 Greene CountyF0 Craighead CountyF0 Craighead CountyF0 Craighead CountyF0 Craighead CountyF0 Craighead CountyF0 Mississippi County

Source: NOAA Storm Events Database, event 5685592. Narratives are written by the National Weather Service forecast office that issued the report.

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