EF1 tornado in Jefferson County, Missouri

Tornado December 31, 2010 · Jefferson County, Missouri

EF1

Rating

12.2 mi

Whole path

150 yd

Path width

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 150 yards (0.09 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF1 means. On the Enhanced Fujita scale, EF1 is moderate damage: roofs badly stripped, mobile homes pushed off foundations or overturned, windows broken, consistent with estimated gusts of 86–110 mph. The rating comes from a survey of the worst damage after the storm, not from a wind measurement, so it says as much about what the tornado hit as about how strong it was.

What the National Weather Service wrote

The tornado crossed Solidarity Drive from Franklin County into Jefferson County and continued to the northeast. The path narrowed as it crossed Highway F just west of Lake Cattails. The tornado finally lifted around 1135 am near the northeast corner of Lake Cattails, 2 miles southeast of Pacific. The damage along this segment consisted of snapped trees, tree limbs and downed trees, and missing or damaged shingles on a few homes.

The wider storm

Severe thunderstorms developed ahead of a strong cold front, triggering numerous showers and thunderstorms. A number of tornadoes were reported as well as damaging winds and large hail.

Began near Hoene Spg (38.4526, -90.7366).

Other tornadoes from the same storm system

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

EF3 St. Louis County 1 dead EF1 St. Louis County EF1 St. Louis (c) County EF1 Franklin County EF1 Crawford County EF1 Franklin County EF0 St. Charles County

Source: NOAA Storm Events Database, event 272950. Narratives are written by the National Weather Service forecast office that issued the report.

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