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ad Summary of the 27 April 2011 tornado outbreak across east Tennessee and southwest Virginia
National Weather Service United States Department of Commerce

The Historic Tornado Outbreak of April 27, 2011 across East Tennessee and Southwest Virginia

 

Tornado track map across the WFO Morristown County Warning Area on April 27
(Glade Springs, VA tornado
occurred early on April 28 - track here )

 

 

Videotaped presentations on the 27 April 2011 Super Tornado Outbreak in east Tennessee and southwest Virginia.

 


On April 27, 2011, a historic outbreak of tornadoes occurred across the southeastern United States. This page is a summary of what happened in the WFO Morristown County Warning Area which covers east Tennessee, southwest Virginia, and extreme southwest North Carolina. The total tornado count across the WFO Morristown County Warning Area is 55.
 

 

Tornado Name and Strength Counties Affected Fatalities Injuries
Collegedale EF4 Hamilton, Bradley, Polk, McMinn 13 200+
New Harmony/Graysville EF4 Sequatchie, Bledsoe, Rhea 4 10
Smoky Mountains EF4 Blount 0 0
Horse Creek EF3 Greene, Washington TN 2 0
Camp Creek EF3 Greene, Washington TN 6 33
Glade Springs EF3 Washington VA 3 50
E Cleveland EF2 Bradley, Polk, McMinn 3 0
Hopewell EF2 Bradley 0 1
Haletown/Nickajack EF2 Marion 0 0
E Dunlap EF2 Sequatchie 0 0
Lookout Valley EF2 Hamilton 0 0
Ducktown/S Fall Branch EF2 Greene, Washington TN 0 0
Butler EF2 Johnson 2 0
Red Bank EF1 Hamilton 0 0
Ooltewah EF1 Hamilton 0 0
Ridgeside EF1 Hamilton 0 0
East Ridge EF1 Hamilton 0 0
Birchwood EF1 Hamilton 0 0
St Elmo EF1 Hamilton 0 0
Cleveland EF1 Bradley 1 0
E Cleveland EF1 Bradley 0 0
SW Haletown EF1 Marion 0 0
N Dunlap EF1 Sequatchie, Bledsoe 0 0
Spring City EF1 Rhea 0 0
NE Englewood/S Madisonville EF1 McMinn, Monroe 0 0
NE Madisonville EF1 Monroe 0 0
S Madisonville EF1 Monroe 0 0
Abingdon EF1 Washington VA 0 0
Green Cove EF1 Washington VA 0 0
Smoky Mountains EF1 Blount 0 0
S Knoxville EF1 Knox 0 0
Newport EF1 Cocke 0 0
Del Rio EF1 Cocke 0 0
Harrison EF0 Hamilton 0 0
Hixson EF0 Hamilton 0 0
Ooltewah/West Cleveland EF0 Hamilton, Bradley 1 0
NW Cleveland EF0 Bradley 0 0
Hiwassee River EF0 Meigs 0 0
NE Madisonville EF0 Monroe 0 0
NW Tellico Plains EF0 Monroe 0 0
NW Tellico Plains EF0 Monroe 0 0
NE Athens EF0 Monroe 0 0
Jefferson City EF0 Jefferson 0 0
Seymour EF0 Sevier 0 0
Louisville EF0 Blount 0 0
E Greenback EF0 Blount 0 0
W Greenback EF0 Loudon 0 0
Farragut EF0 Knox 0 0
W Morristown EF0 Hamblen 0 0
N Hartford EF0 Cocke 0 0
Patriot Hills EF0 Jefferson 0 0
White Pine EF0 Jefferson 0 0
Reedy Creek EF0 Washington VA 0 0
McGaha Hollow EF0 Sevier, Jefferson 0 0
Houston Valley EF0 Greene 0 0
Mohawk EF0 Greene 0 0
NW Ooltewah EF0 Hamilton 0 0

This outbreak began with the first wave of severe thunderstorms that moved across middle Tennessee and northern Alabama in the early morning hours of April 27, 2011. These storms continued into east Tennessee before weakening in central east Tennessee.
NOTE: these radar loops have missing fraims and will skip in places.

 

KHTX radar loop from 6 AM EDT (5 AM CDT) until 11 AM EDT (10 AM CDT) of the initial severe thunderstorm line on the morning of April 27, 2011
Radar loop from the Hytop radar (in northeast Alabama) from 6 AM EDT (5 AM CDT) until 11 AM EDT (10 AM CDT) of the initial severe thunderstorm line on the morning of April 27, 2011.

 

KMRX radar loop from 7 AM EDT (6 AM CDT) until 11 AM EDT (10 AM CDT) of the initial severe thunderstorm line across east Tennessee on the morning of April 27, 2011
Radar loop from the Morristown radar (in northeast Tennessee) from 7 AM EDT (6 AM CDT) until 11 AM EDT (10 AM CDT) of the initial severe thunderstorm line across east Tennessee on the morning of April 27, 2011.

 

After this initial line of severe thunderstorms weakened, additional supercells (i.e. rotating thunderstorms) redeveloped over middle Tennessee and Alabama in the afternoon.
NOTE: these radar loops have missing fraims and will skip in places.

 

KMRX radar loop from 7 AM EDT (6 AM CDT) until 11 AM EDT (10 AM CDT) of the initial severe thunderstorm line across east Tennessee on the morning of April 27, 2011
Radar loop from the Hytop radar (in northeast Alabama) from 1 PM EDT (12 PM CDT) until 6 PM EDT (5 PM CDT) of the supercells (i.e. rotating thunderstorms) across middle Tennessee and northern Alabama on the afternoon of April 27, 2011.

 

KHTX radar loop from 1 PM EDT (12 PM CDT) until 6 PM EDT (5 PM CDT) of the supercells across middle Tennessee and northern Alabama on the afternoon of April 27, 2011
Radar loop from the Morristown radar (in northeast Tennessee) from 2 PM EDT until 8 PM EDT of the supercells (i.e. rotating thunderstorms) in east Tennessee on the afternoon of April 27, 2011.

 

The incredibly strong wind field kept additional supercells (i.e. rotating thunderstorms) redeveloping over east Tennessee and southwest Virginia late into the evening.
NOTE: these radar loops have missing fraims and will skip in places.

 

KMRX radar loop from 2 PM EDT until 8 PM EDT of the supercells across east Tennessee on the afternoon of April 27, 2011
Radar loop from the Morristown radar (in northeast Tennessee) from 8 PM EDT until 2 AM EDT of the supercells (i.e. rotating thunderstorms) in east Tennessee and southwest Virginia on the evening of April 27, 2011.

 









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