EF0 tornado in Franklin County, Missouri

Tornado December 31, 2010 · Franklin County, Missouri

EF0

Rating

8.6 mi

Whole path

20 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 20 yards (0.01 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF0 means. On the Enhanced Fujita scale, EF0 is light damage: shingles and siding peeled, gutters torn, branches broken, consistent with estimated gusts of 65–85 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 initially touched down northeast of Highway 30 and County Road HH in southeast Franklin County. Several medium size tree limbs were snapped in the upper parts of the trees. The width of the tree limb damage was 20 yards. Further to the northeast, a barn sustained moderate roof damage on Woodland Road. The tornado then skipped northeast and moved into northwest Jefferson County.

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 Lonedell (38.3067, -90.7819).

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 EF2 Franklin County EF1 St. Louis County EF1 St. Louis (c) County EF1 Franklin County EF1 Crawford County EF0 St. Charles County

Source: NOAA Storm Events Database, event 275087. Narratives are written by the National Weather Service forecast office that issued the report.

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