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F1 tornado in Boone County, Arkansas

Tornado July 24, 1999 · Boone County, Arkansas

Rating

0.4 mi

Path length

100 yd

Path width

Injuries

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The path drawn at its surveyed width of 100 yards (0.06 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.

The wider storm

A waterspout that developed over Bull Shoals Lake moved southwest into Lead Hill Park in Boone County, or about 4 miles north of Lead Hill. As it moved ashore, its classification changed to a tornado. The tornado was weak, but caused considerable damage to several camping trailers. Trees were also downed or snapped. Twenty six people were injured, with 5 people injured seriously. The tornado tracked roughly four tenths of a mile before dissipating.

Began near Lead Hill (36.4800, -92.9000).

Source: NOAA Storm Events Database, event 5710733. Narratives are written by the National Weather Service forecast office that issued the report.

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