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F2 tornado in Knox County, Missouri

Tornado April 8, 1999 · Knox County, Missouri

Rating

17.0 mi

Whole path

100 yd

Path width

$1.0M

Damage as recorded

NOAA records this tornado county by county. Its path ran through Macon County → Knox County; the totals above are for the whole tornado.

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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 F2 means. This tornado was rated on Fujita’s original scale, used until 2007. F2 meant considerable damage: roofs torn off well-built houses, mobile homes destroyed, large trees snapped or uprooted; the scale paired it with winds of 113–157 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 tornado moved from Macon into Knox County southwest of Novelty and caused damage for about 7 miles as it tracked northeast. One home completely lost its roof while another lost half of its roof. Another home had the siding peeled off one side. At least 4 barns, 6 outbuildings and 2 grain bins were destroyed. Several large trees were downed along with power lines and power poles.

Began near Novelty (39.9300, -92.3000).

Source: NOAA Storm Events Database, event 5698385. Narratives are written by the National Weather Service forecast office that issued the report.

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