Tornadoes · United States · Tennessee · 2011

EF2 tornado, Citico Beach to Calderwood Dam, Tennessee, April 27, 2011

Name: EF2 tornado, Citico Beach to Calderwood Dam, Tennessee, April 27, 2011
Start: 2011-04-28T01:35:00.000Z
End: 2011-04-28T01:50:00.000Z
Location: Citico Beach to Calderwood Dam, Tennessee

From Citico Beach to Calderwood Dam, this EF2 tornado ran 16.9 miles across Monroe and Blount counties on April 27, 2011, touching down at 9:35 PM EDT and reaching 440 yards wide. It killed nobody, and did $110,000 of property damage.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

EF065 to 85 mph
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
EF2111 to 135 mphthis tornado
Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.
EF3136 to 165 mph
Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
EF5over 200 mph
Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.
Unrated
The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

The record

Rating: EF2
Date: April 27, 2011
Touchdown: 9:35 PM EDT (01:35 UTC)
Lifted: 9:50 PM EDT (01:50 UTC)
On the ground: 15 minutes
Path length: 16.9 miles (27.2 km)
Path width: 440 yards (402 m)
Deaths: 0
Injuries: 0
Property damage: $110,000
Counties: Monroe and Blount counties
Touchdown point: 35.509, -84.067
Lift-off point: 35.663, -83.841
Record number: 1104271935-01

What the Weather Service recorded

Favorable atmospheric conditions resulted in a deadly tornado outbreak across east Tennessee on the 27th. The thunderstorms produced more than 50 tornadoes across the east Tennessee area with 32 deaths and more than 200 injured. The tornadoes produced from light to heavy damage to hundreds of homes and businesses. Hail as large as baseballs was also reported.

Dog Gap Tornado. The Cherokee National Forest reported this tornado path that was less than a mile south of the EF4 Chilhowee track from two hours earlier. Aerial photographs from this tornado showed heavy tree damage in the heart of the path. The tornado dissipated just before getting to Chilhowee Lake.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

18 minutes of warning. NWS MRX issued a tornado warning for this county at 01:17 UTC, 18 minutes before the tornado touched down, in force until 02:00 UTC.

The county was under a tornado watch, issued at 20:36 UTC and running to 05:00 UTC.

Issued (UTC)	Expired	Product	Office
12:00 UTC	06:00 UTC	Wind Advisory	MRX
12:36 UTC	15:07 UTC	Tornado Watch	MRX
13:39 UTC	14:45 UTC	Severe Thunderstorm Warning	MRX
14:23 UTC	14:45 UTC	Tornado Warning	MRX
15:28 UTC	20:36 UTC	Tornado Watch	MRX
19:04 UTC	20:00 UTC	Severe Thunderstorm Warning	MRX
19:43 UTC	20:30 UTC	Tornado Warning	MRX
20:09 UTC	21:00 UTC	Tornado Warning	MRX
20:25 UTC	21:30 UTC	Tornado Warning	MRX
20:36 UTC	05:00 UTC	Tornado Watch	MRX
20:39 UTC	23:30 UTC	Flood Advisory	MRX
21:29 UTC	21:45 UTC	Tornado Warning	MRX
22:39 UTC	23:36 UTC	Tornado Warning	MRX
22:57 UTC	02:00 UTC	Flash Flood Warning	MRX
23:06 UTC	00:00 UTC	Tornado Warning	MRX
23:21 UTC	00:00 UTC	Tornado Warning	MRX
23:54 UTC	00:45 UTC	Tornado Warning	MRX
00:07 UTC	01:00 UTC	Tornado Warning	MRX
01:17 UTC	02:00 UTC	Tornado Warning	MRX
02:03 UTC	10:00 UTC	Flood Warning	MRX
02:14 UTC	03:00 UTC	Tornado Warning	MRX
02:49 UTC	03:15 UTC	Tornado Warning	MRX
02:52 UTC	03:15 UTC	Tornado Warning	MRX
03:13 UTC	04:00 UTC	Tornado Warning	MRX

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The forecast that day

The Storm Prediction Center had this point in a Moderate Risk, with a 0.15 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 00:50 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

What forecasters said that day

The local office's own words before the tornado touched down, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Morristown, TN wrote its last area forecast discussion before the tornado touched down at Apr 27, 7:28 PM EDT, 2 hours 7 minutes earlier.

Area forecast discussion, Apr 27, 7:28 PM EDT, 2 hours 7 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
728 PM EDT WED APR 27 2011

.AVIATION...POWERFUL DAMAGING THUNDERSTORMS WILL CONTINUE TO AFFECT
TAF SITES EARLY IN THE PERIOD. SOME TORNADOES AND WINDS IN EXCESS
OF 60 MPH HAVE BEEN REPORTED WITH RECENT STORMS. A COLD FRONT WILL
MOVE EAST THROUGH THE TAF SITES AROUND 28/06Z. THE BULK OF THE DEEP
CONVECTION WILL HAVE MOVED NORTH AND EAST OF THE AREA. WINDS WILL
SHIFT TO THE SW - W AND REMAIN BREEZY THROUGH THE PERIOD. CIGS AND
VSBY WILL BE PREDOMINATELY VFR OUTSIDE OF STORMS.

&&

.MRX WATCHES/WARNINGS/ADVISORIES...
NC...WIND ADVISORY UNTIL 2 AM EDT THURSDAY FOR THE FOLLOWING ZONES:
     CHEROKEE...CLAY.

TN...HIGH WIND WARNING UNTIL 2 AM EDT THURSDAY FOR THE FOLLOWING
     ZONES: BLOUNT SMOKY MOUNTAINS...COCKE SMOKY MOUNTAINS...
     JOHNSON...SEVIER SMOKY MOUNTAINS...SOUTHEAST CARTER...
     SOUTHEAST GREENE...SOUTHEAST MONROE...UNICOI.

     WIND ADVISORY UNTIL 2 AM EDT /1 AM CDT/ THURSDAY FOR THE
     FOLLOWING ZONES: ANDERSON...BLEDSOE...BRADLEY...CAMPBELL...
     CLAIBORNE...EAST POLK...GRAINGER...HAMBLEN...HAMILTON...
     HANCOCK...HAWKINS...JEFFERSON...KNOX...LOUDON...MARION...
     MCMINN...MEIGS...MORGAN...NW BLOUNT...NORTH SEVIER...
     NORTHWEST CARTER...NORTHWEST COCKE...NORTHWEST GREENE...
     NORTHWEST MONROE...RHEA...ROANE...SCOTT TN...SEQUATCHIE...
     SULLIVAN...UNION...WASHINGTON TN...WEST POLK.

VA...WIND ADVISORY UNTIL 2 AM EDT THURSDAY FOR THE FOLLOWING ZONES:
     LEE...RUSSELL...SCOTT...WASHINGTON...WISE.

&&

SON

Hazardous weather outlook, Apr 27, 4:55 AM EDT, 16 hours 40 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
455 AM EDT WED APR 27 2011

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-280900-
CHEROKEE-CLAY-SCOTT TN-CAMPBELL-CLAIBORNE-HANCOCK-HAWKINS-
SULLIVAN-JOHNSON-MORGAN-ANDERSON-UNION-GRAINGER-HAMBLEN-
NORTHWEST COCKE-COCKE SMOKY MOUNTAINS-NORTHWEST GREENE-
SOUTHEAST GREENE-WASHINGTON TN-UNICOI-NORTHWEST CARTER-
SOUTHEAST CARTER-ROANE-LOUDON-KNOX-JEFFERSON-NW BLOUNT-
BLOUNT SMOKY MOUNTAINS-NORTH SEVIER-SEVIER SMOKY MOUNTAINS-
SEQUATCHIE-BLEDSOE-RHEA-MEIGS-MCMINN-NORTHWEST MONROE-
SOUTHEAST MONROE-MARION-HAMILTON-BRADLEY-WEST POLK-EAST POLK-LEE-
WISE-SCOTT-RUSSELL-WASHINGTON-
455 AM EDT WED APR 27 2011 /355 AM CDT WED APR 27 2011/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH
CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA.

.DAY ONE...TODAY AND TONIGHT

A STRONG COLD FRONT WITH A STRONG WIND FIELD WILL MOVE ACROSS THE
TENNESSEE RIVER VALLEY TODAY...BRINGING THE POTENTIAL FOR A
SIGNIFICANT OUTBREAK OF SEVERE THUNDERSTORMS BY THIS AFTERNOON AND
EVENING. THERE WILL BE THE POTENTIAL FOR WIDESPREAD DAMAGING
WINDS...VERY LARGE HAIL...HEAVY RAINFALL...AND TORNADOES. IN
ADDITION...THERE WILL BE THE POTENTIAL FOR STRONG AND LONG-TRACK
TORNADOES.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

GH

In the hours before

Local storm report, Apr 27, 9:14 PM EDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
914 PM EDT WED APR 27 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0845 PM     TSTM WND DMG     MOHAWK                  36.20N 83.06W
04/27/2011                   GREENE             TN   LAW ENFORCEMENT

            NUMEROUS TREES DOWN.

&&

Local storm report, Apr 27, 9:21 PM EDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
921 PM EDT WED APR 27 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0915 PM     TSTM WND DMG     DUNLAP                  35.37N 85.39W
04/27/2011                   SEQUATCHIE         TN   LAW ENFORCEMENT

            ROOF BLOWN OFF BUILDING.

0915 PM     FLOOD            DUNLAP                  35.37N 85.39W
04/27/2011                   SEQUATCHIE         TN   LAW ENFORCEMENT

            FLOODING ON HWY 127.

&&

Local storm report, Apr 27, 9:22 PM EDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
922 PM EDT WED APR 27 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0912 PM     TORNADO          7 SSW ATHENS            35.36N 84.65W
04/27/2011                   MCMINN             TN   TRAINED SPOTTER

            POSSIBLE TORNADO

&&

Local storm report, Apr 27, 9:29 PM EDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
929 PM EDT WED APR 27 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 PM     TSTM WND DMG     7 SSW MARYVILLE         35.65N 84.02W
04/27/2011                   BLOUNT             TN   AMATEUR RADIO

            CARPENTERS GRADE ROAD AND BERT GARNER LN

&&

Local storm report, Apr 27, 9:30 PM EDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
930 PM EDT WED APR 27 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0915 PM     HAIL             ATHENS                  35.45N 84.60W
04/27/2011  E1.00 INCH       MCMINN             TN   TRAINED SPOTTER

            OCCURRING ON SOUTH JACKSON STREET.

&&

Local storm report, Apr 27, 9:35 PM EDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
935 PM EDT WED APR 27 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0927 PM     TORNADO          8 NNE ETOWAH            35.44N 84.47W
04/27/2011                   MCMINN             TN   TRAINED SPOTTER

            POSSIBLE TORNADO REPORTED

&&

The air that afternoon

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Nashville Metro, TN (KBNA), 00:00Z

1.6 hours before the tornado, 246 km from the path. April 28, 2011.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.

Mixed-layer CAPE: 308 J/kg
Mixed-layer CIN: -100 J/kg
Surface CAPE: 24 J/kg
Mixed-layer LCL: 669 m above ground
0-6 km bulk shear: 104 kt
0-1 km bulk shear: 44 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 247 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.3
0-3 km lapse rate: 4.3 K/km

Open this sounding in Storm Lab

Nashville Metro, TN (KBNA), 12:00Z

10.4 hours after it, 246 km from the path. April 28, 2011.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.

Hodograph

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: -89859 J/kg
Surface CAPE: 1 J/kg
Mixed-layer LCL: 902 m above ground
0-6 km bulk shear: 103 kt
0-1 km bulk shear: 10 kt
0-1 km storm-relative helicity: -82 m²/s²
0-3 km storm-relative helicity: -80 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0
0-3 km lapse rate: 3.8 K/km

Open this sounding in Storm Lab

The radar

The Knoxville radar (KMRX), 82 km away, was scanning. The volume nearest the touchdown began at 01:34 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)	Report	Where	County	Remark
22:54 UTC	TSTM WND DMG	5 Sw Etowah	Mcminn, TN	ROOF BLOWN OFF HOME AND SEVERAL TREES DOWN IN THE COG HILL COMMUNITY.
23:30 UTC	HAIL 1	6 Ne Greenback	Blount, TN
23:43 UTC	HAIL 1.75	Loudon	Loudon, TN
23:46 UTC	HAIL 1	3 Nw Alcoa	Blount, TN	REPORTED AT MCGHEE TYSON AIRPORT.
00:00 UTC	TSTM WND DMG	7 Ssw Maryville	Blount, TN	CARPENTERS GRADE ROAD AND BERT GARNER LN
00:00 UTC	HAIL 1.75	Lenoir City	Loudon, TN
00:03 UTC	FUNNEL CLOUD	Vonore	Monroe, TN
00:04 UTC	HAIL 1	Farragut	Knox, TN
00:05 UTC	FUNNEL CLOUD	Maryville	Blount, TN	FUNNEL CLOUD SEEN FROM MAPLE LANE BETWEEN MARYVILLE AND GREENBACK.
00:05 UTC	HAIL 2	2 W Knoxville	Knox, TN
00:09 UTC	TORNADO	1 Nw Maryville	Blount, TN	EF0. MAX WIND OF 70 MPH.
00:10 UTC	HAIL 1	Dandridge	Jefferson, TN
00:10 UTC	HAIL 1.75	Friendsville	Blount, TN
00:10 UTC	HAIL 1.75	Knoxville	Knox, TN
00:15 UTC	HAIL 2.75	2 Se Knoxville	Knox, TN	LARGE HAIL DAMAGED VEHICLES IN THE AREA.
00:19 UTC	TSTM WND GST 70	Knoxville	Knox, TN	OCCURRING ON THE UNIVERSITY OF TENNESSEE CAMPUS.
00:19 UTC	HAIL 1.75	Knoxville	Knox, TN	OCCURRING ON THE UNIVERSITY OF TENNESSEE CAMPUS.
00:20 UTC	TSTM WND DMG	2 W Alcoa	Blount, TN	MODERATE ROOF DAMAGE TO HOMES IN THE LOUISVILLE AREA.
00:32 UTC	HAIL 1.25	Knoxville	Knox, TN	OCCURRING AT INTERSECTION OF CENTRAL AND WOODLAND EAST OF INTERSTATE 275 AND JUST NORTH OF INTERSTATE 40.
00:38 UTC	HAIL 1	Farragut	Knox, TN
00:48 UTC	HAIL 2	3 Sw Dandridge	Jefferson, TN
01:12 UTC	TORNADO	7 Ssw Athens	Mcminn, TN	POSSIBLE TORNADO
01:15 UTC	HAIL 1	Athens	Mcminn, TN	OCCURRING ON SOUTH JACKSON STREET.
01:27 UTC	TORNADO	8 Nne Etowah	Mcminn, TN	POSSIBLE TORNADO REPORTED
01:30 UTC	HAIL 1.75	Vonore	Monroe, TN
01:30 UTC	TORNADO	Mount Vernon	Monroe, TN	POSSIBLE TORNADO. TRAILER THROWN FROM ITS FOUNDATION.
01:30 UTC	TORNADO	Tellico Plains	Monroe, TN	POSSIBLE TORNADO. ROOF DAMAGE TO NUMEROUS BUSINESSES.
02:00 UTC	HAIL 1	2 Se Sevierville	Sevier, TN
02:08 UTC	TSTM WND DMG	Dandridge	Jefferson, TN	NUMEROUS TREES DOWN AT DOUGLAS CAMPGROUND.
03:45 UTC	HAIL 1.25	Townsend	Blount, TN

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the track Every 2011 tornado in Tennessee Every tornado in Tennessee since 1950 Warnings in force in Tennessee now The forecast where you are

The other tornadoes of April 27, 2011

209 more were confirmed in the United States that day.

Date	Time	Rating	Where	Path (mi)	Width (yd)	Deaths	Injuries	Damage
April 27	1:12 AM CDT	EF1	Yazoo, MS	9.7	250			$70,000
April 27	1:15 AM CDT	EF1	Leflore, MS	27.7	50			$50,000
April 27	1:24 AM CDT	EF1	Leflore, MS	3.2	100			$50,000
April 27	1:36 AM CDT	EF0	LaSalle Parish, LA	8.0	100			$40,000
April 27	1:40 AM CDT	EF2	Holmes, MS	12.3	1,760			$100,000
April 27	1:40 AM CDT	EF3	Holmes, MS	23.0	1,760			$700,000
April 27	1:51 AM CDT	EF2	Attala, MS	23.0	860			$553,000
April 27	1:51 AM CDT	EF0	Holmes, MS	1.7	50			$25,000
April 27	1:59 AM CDT	EF2	Holmes, MS	8.8	880			$10,000
April 27	2:06 AM CDT	EF1	Grenada, MS	1.9	150			$60,000
April 27	2:17 AM CDT	EF2	Montgomery, MS	11.7	1,760			$425,000
April 27	2:20 AM CDT	EF1	Attala, MS	0.5	50			$25,000
April 27	2:25 AM CDT	EF2	Choctaw, MS	6.8	1,750		2	$350,000
April 27	2:29 AM CDT	EF1	Winston, MS	4.2	150			$85,000
April 27	2:29 AM CDT	EF3	Choctaw, MS	58.7	1,800		25	$5.4 million
April 27	2:37 AM CDT	EF2	Webster, MS	13.3	1,320	1	5	$605,000
April 27	2:47 AM CDT	EF1	Winston, MS	7.3	200			$60,000
April 27	3:20 AM CDT	EF1	Noxubee, MS	6.2	150			$300,000
April 27	3:43 AM CDT	EF2	Tishomingo, MS	9.3	150		1	$500,000
April 27	4:01 AM CDT	EF1	Lauderdale, AL to TN	9.2	200			$1,000
April 27	4:03 AM CDT	EF2	Kemper, MS to AL	35.2	1,410			$3.2 million
April 27	4:19 AM CDT	EF1	Lauderdale, AL	1.8	100		1
April 27	4:27 AM CDT	EF2	Pickens, AL	14.4	1,232			$1.8 million
April 27	4:41 AM CDT	EF3	Pickens, AL	22.5	704			$741,000
April 27	5:03 AM CDT	EF1	Fayette, AL	7.3	176		4	$1.4 million
April 27	5:17 AM CDT	EF3	Tuscaloosa, AL	20.3	200			$9.3 million
April 27	5:18 AM CDT	EF3	Walker, AL	18.9	375		20	$13 million
April 27	5:38 AM CDT	EF2	Lincoln, TN	25.9	400
April 27	5:40 AM CDT	EF1	Marshall, TN	2.9	100			$75,000
April 27	5:47 AM CDT	EF0	Rutherford, TN	2.1	50			$8,000
April 27	5:48 AM CDT	EF2	Cullman, AL	30.3	880	1
April 27	5:50 AM CDT	EF1	Shelby, AL	3.4	100			$3.7 million
April 27	5:50 AM CDT	EF1	Lawrence, TN	2.7	150		1	$11,000
April 27	5:52 AM CDT	EF0	Rutherford, TN	1.6	75			$50,000
April 27	5:53 AM CDT	EF2	Blount, AL	3.2	200		3	$9.3 million
April 27	5:54 AM CDT	EF2	Jefferson, AL	7.8	200		20	$18 million
April 27	6:12 AM CDT	EF1	Blount, AL	14.8	200			$42,000
April 27	6:13 AM CDT	EF2	Moore, TN	2.0	75			$25,000
April 27	6:16 AM CDT	EF2	St. Clair, AL	3.8	200		5	$865,000
April 27	6:20 AM CDT	EF1	Marshall, AL	11.0	75
April 27	6:24 AM CDT	EF0	Smith, TN	3.4	50			$5,000
April 27	6:24 AM CDT	EF1	Marshall, AL	6.4	100
April 27	6:30 AM CDT	EF2	Marshall, AL	20.0	880
April 27	6:30 AM CDT	EF1	Marshall, AL	4.6	50
April 27	6:30 AM CDT	EF1	Marshall, AL	3.4	100
April 27	6:30 AM CDT	EF1	Marshall, AL	5.7	50
April 27	6:32 AM CDT	EF1	Green, KY	3.1	150
April 27	6:35 AM CDT	EF1	Marshall, AL	4.9	100
April 27	6:35 AM CDT	EF1	Marshall, AL	0.3	50			$10,000
April 27	6:43 AM CDT	EF0	Marshall, AL	2.8	75
April 27	6:45 AM CDT	EF0	Coffee, TN	1.7	50			$5,000
April 27	6:45 AM CDT	EF1	Marshall, AL	4.8	200
April 27	6:45 AM CDT	EF1	Marshall, AL	6.9	300
April 27	6:47 AM CDT	EF1	Jackson, TN	3.3	100			$10,000
April 27	6:49 AM CDT	EF0	Jackson, TN	2.0	50			$20,000
April 27	6:49 AM CDT	EF1	Marshall, AL	1.6	100
April 27	6:50 AM CDT	EF1	Warren, TN	13.2	100			$100,000
April 27	6:58 AM CDT	EF1	DeKalb, AL	27.9	300	1
April 27	7:02 AM CDT	EF1	Monroe, KY	5.9	550
April 27	7:10 AM CDT	EF2	DeKalb, AL	5.8	200			$30,000

All 210 of them

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

Sources

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.