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EF3 tornado in Caddo Parish, Louisiana

Tornado January 20, 2010 · Caddo Parish, Louisiana

EF3
Rating
15.6 mi
Whole path
1,087 yd
Path width
$1.5M
Damage as recorded

NOAA records this tornado county by county. Its path ran through Harrison County, Texas → Caddo Parish; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 1,087 yards (0.62 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF3 means. On the Enhanced Fujita scale, EF3 is severe damage: whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, consistent with estimated gusts of 136–165 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 was a continuation of the Harrison County tornado that produced EF3 damage across portions of Waskom, Texas. The tornado weakened significantly as it cross the Texas/Louisiana line and moved into Caddo Parish. A weakened tornado continued east crossing Greenwood Mooringsport road where several trees were uprooted and continued east over portions of western Cross Lake before lifting southwest of Blanchard. Maximum winds are estimated at 150-160 mph at the tornadoes strongest point.

The wider storm

A very warm and unstable air mass developed across the region on January 20th. This air mass was accompanied by unusually high dewpoint values for late January with ambient temperatures approaching the 70 degree mark. A very strong and vigorous storm system moved out of the Great Basin and into the Southern Plains and Lower Mississippi Valley during the late afternoon and evening hours of January 20th. Wind shear throughout the atmosphere was very strong and supportive of strong to severe thunderstorms. Low level wind shear was significant enough such that super cell thunderstorms developed across the region, producing tornadoes, large hail and damaging wind gusts. In addition to the severe thunderstorms, some storms produced flash flooding as they continued to train across the same general areas, especially across portions of northwest Louisiana and southwest Arkansas.

Began near Lorraine (32.5182, -94.0432).

Other tornadoes from the same storm system

1 more tornado the National Weather Service filed under this storm episode.

Source: NOAA Storm Events Database, event 203449. Narratives are written by the National Weather Service forecast office that issued the report.

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