F1 tornado — Calloway County, Kentucky

F1 tornado in Calloway County, Kentucky

Tornado July 1, 1999 · Calloway County, Kentucky

Rating

9.0 mi

Path length

400 yd

Path width

$100K

Damage as recorded

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The path drawn at its surveyed width of 400 yards (0.23 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.

What the National Weather Service wrote

The tornado formed along U.S. Highway 641 about 5 miles south of Murray and tracked east into the New Concord area. The tornado was rated F-1 intensity with top winds near 110 MPH. Numerous trees were uprooted or snapped off along the path of the tornado. Some of the trees fell on utility lines, vehicles, and buildings. The area was sparsely populated, so damage was relatively light considering the path length and width. At least a dozen or so homes received some damage, mostly light roof or siding damage. There was moderate damage to at least a couple homes. Several barns were damaged. At one residence, a porch was damaged, along with other items such as a television antenna, fence, and swimming pool. Sheet metal from a barn was blown into treetops.

Source: NOAA Storm Events Database, event 5709552. Narratives are written by the National Weather Service forecast office that issued the report.

F1 tornado in Calloway County, Kentucky

What the National Weather Service wrote

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