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EF3 tornado in Calhoun County, Mississippi

Tornado April 27, 2011 · Calhoun County, Mississippi

EF3
Rating
51.5 mi
Whole path
1,320 yd
Path width
4
Deaths
25
Injuries
$3.3M
Damage as recorded

NOAA records this tornado county by county. Its path ran through Webster County → Calhoun County → Chickasaw County → Monroe County; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 1,320 yards (0.75 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

A strong tornado moved northeast out of Webster County into extreme Southeastern Calhoun County. At least one home sustained major damage and one barn was destroyed. Numerous trees were knocked down. The tornado continued to move northeast and crossed into Chickasaw County.

The wider storm

A stationary front remained draped across Southern Missouri into Western Kentucky from April 24th, 2011 into April 25th, 2011. A very warm and unstable atmosphere was in place across the Mid-South ahead of the front. A low pressure system developed along the front and interacted with the unstable environment which helped produce several rounds of severe storms into the evening of April 26th, 2011. As a result of the severe storms, the front sank south during the early morning hours of April 27th, 2011 as a secondary low pressure system developed along the front. As a result, another round of severe storms fired during the afternoon hours ahead of the low pressure center. Additional severe storms fired along the trailing cold front. Tornadoes, large hail, damaging winds, flash flooding occurred as a result of the severe storms.

Began near Slate (33.7210, -89.2730).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 303243. Narratives are written by the National Weather Service forecast office that issued the report.

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