Alert archive / Tennessee / Tornado Warnings in 2011

Tornado Warning 52, NWS Morristown, TN

April 27, 20119 counties in Tennessee

NWS Morristown, TN issued this tornado warning at Apr 27, 2011, 7:21 PM EDT for 9 counties in Tennessee. It was in force for 39 min. 9 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 27, 2011, 7:21 PM EDT (23:21 UTC)
Expired: Apr 27, 2011, 8:00 PM EDT
In force: 39 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon

Counties Blount County, TN, Bradley County, TN, Knox County, TN, Loudon County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Rhea County, TN, Roane County, TN

The radar

The Knoxville radar (KMRX), 101 km from the middle of the area, began a volume at 23:21 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Apr 27, 7:30 PM EDT	HAIL 1	6 Ne Greenback, TN
Apr 27, 7:43 PM EDT	HAIL 1.75	Loudon, TN
Apr 27, 7:46 PM EDT	HAIL 1	3 Nw Alcoa, TN	REPORTED AT MCGHEE TYSON AIRPORT.
Apr 27, 8:00 PM EDT	HAIL 1.75	Lenoir City, TN
Apr 27, 8:03 PM EDT	FUNNEL CLOUD	Vonore, TN
Apr 27, 8:04 PM EDT	HAIL 1	Farragut, TN
Apr 27, 8:05 PM EDT	FUNNEL CLOUD	Maryville, TN	FUNNEL CLOUD SEEN FROM MAPLE LANE BETWEEN MARYVILLE AND GREENBACK.
Apr 27, 8:09 PM EDT	TORNADO	1 Nw Maryville, TN	EF0. MAX WIND OF 70 MPH.
Apr 27, 8:10 PM EDT	HAIL 1.75	Friendsville, TN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 27, 4:36 PM EDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.4 hours before the alert went out and 203 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

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.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 714 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: -84 m²/s²
0-3 km storm-relative helicity: -38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

345 
WFUS54 KMRX 272321
TORMRX
TNC009-011-093-105-107-121-123-143-145-280000-
/O.NEW.KMRX.TO.W.0052.110427T2321Z-110428T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
721 PM EDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* TORNADO WARNING FOR...
  BLOUNT COUNTY IN EAST TENNESSEE...
  EXTREME NORTHERN BRADLEY COUNTY IN EAST TENNESSEE...
  WESTERN KNOX COUNTY IN EAST TENNESSEE...
  LOUDON COUNTY IN EAST TENNESSEE...
  MCMINN COUNTY IN EAST TENNESSEE...
  MEIGS COUNTY IN EAST TENNESSEE...
  MONROE COUNTY IN EAST TENNESSEE...
  RHEA COUNTY IN EAST TENNESSEE...
  ROANE COUNTY IN EAST TENNESSEE...

* UNTIL 800 PM EDT

* AT 716 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR DECATUR.
  DOPPLER RADAR SHOWED THIS TORNADO MOVING NORTHEAST AT 60 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  ATHENS...SWEETWATER...LOUDON...LENOIR CITY...ALCOA...MARYVILLE...
  FARRAGUT...EAGLETON VILLAGE...PEAKLAND...CLEAR WATER...NIOTA...
  MURRAY STORE...TEN MILE...FAIRVIEW...PAINT ROCK...PHILADELPHIA...
  VONORE...BRADBURY...GREENBACK AND FRIENDSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM EDT THURSDAY MORNING
FOR SOUTHWEST NORTH CAROLINA AND CENTRAL TENNESSEE. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL 100 AM EDT THURSDAY MORNING FOR
SOUTHWEST VIRGINIA.

&&

LAT...LON 3559 8500 3597 8431 3591 8427 3592 8425
      3594 8427 3593 8424 3595 8425 3595 8422
      3597 8420 3575 8384 3561 8414 3556 8437
      3548 8445 3543 8464 3532 8485
TIME...MOT...LOC 2320Z 236DEG 51KT 3550 8476

$$

DH

1 follow-up statement

059 
WWUS54 KMRX 272348
SVSMRX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
748 PM EDT WED APR 27 2011

TNC009-011-093-105-107-121-123-143-145-280000-
/O.CON.KMRX.TO.W.0052.000000T0000Z-110428T0000Z/
RHEA TN-ROANE TN-LOUDON TN-BRADLEY TN-KNOX TN-MCMINN TN-MEIGS TN-
MONROE TN-BLOUNT TN-
748 PM EDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR BLOUNT...
MONROE...MEIGS...MCMINN...KNOX...EXTREME NORTHERN BRADLEY...LOUDON...
ROANE AND RHEA COUNTIES...

AT 744 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR PHILADELPHIA...OR 
NEAR LOUDON...MOVING NORTHEAST AT 60 MPH.  OTHER STORMS MAY MOVE 
INTO THE WESTERN PART OF THE WARNED AREA WITH THE POTENTIAL TO 
PRODUCE A TORNADO. 

LOCATIONS IN THE WARNING INCLUDE...
  LOUDON...LENOIR CITY...ALCOA...MARYVILLE...FARRAGUT...EAGLETON
  VILLAGE...VONORE...BRADBURY...GREENBACK...FRIENDSVILLE AND CLOVER
  HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM EDT THURSDAY MORNING 
FOR SOUTHWEST NORTH CAROLINA AND CENTRAL TENNESSEE.

&&

LAT...LON 3559 8500 3597 8431 3591 8427 3592 8425
      3594 8427 3593 8424 3595 8425 3595 8422
      3597 8420 3575 8384 3561 8414 3556 8437
      3548 8445 3543 8464 3532 8485
TIME...MOT...LOC 2347Z 236DEG 51KT 3571 8437

$$

TD

The office that day

Everything else NWS Morristown, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 27, 7:38 AM EDT	Severe Thunderstorm Warning	MRX	Marion, Sequatchie	52 min
Apr 27, 8:16 AM EDT	Severe Thunderstorm Warning	MRX	Bledsoe	44 min
Apr 27, 8:25 AM EDT	Severe Thunderstorm Warning	MRX	Hamilton, Marion, Sequatchie	65 min
Apr 27, 8:37 AM EDT	Tornado Warning	MRX	Bradley, Hamilton, Marion	53 min
Apr 27, 8:49 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Bledsoe, Campbell, Morgan, Roane, Scott	56 min
Apr 27, 9:14 AM EDT	Tornado Warning	MRX	Hamilton	46 min
Apr 27, 9:15 AM EDT	Tornado Warning	MRX	Scott	30 min
Apr 27, 9:20 AM EDT	Severe Thunderstorm Warning	MRX	Bradley, Polk	40 min
Apr 27, 9:33 AM EDT	Tornado Warning	MRX	Meigs, Rhea	42 min
Apr 27, 9:39 AM EDT	Severe Thunderstorm Warning	MRX	McMinn, Monroe	66 min
Apr 27, 9:51 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Blount, Campbell, Grainger, Jefferson, Knox and 6 more	54 min
Apr 27, 9:56 AM EDT	Tornado Warning	MRX	McMinn	49 min
Apr 27, 10:10 AM EDT	Tornado Warning	MRX	Loudon, Meigs, Roane	50 min
Apr 27, 10:23 AM EDT	Tornado Warning	MRX	McMinn, Monroe	22 min
Apr 27, 10:47 AM EDT	Tornado Warning	MRX	Anderson, Knox	18 min
Apr 27, 1:25 PM EDT	Tornado Warning	MRX	Marion	65 min
Apr 27, 2:01 PM EDT	Severe Thunderstorm Warning	MRX	Sequatchie	44 min
Apr 27, 2:10 PM EDT	Tornado Warning	MRX	Sequatchie	50 min
Apr 27, 2:23 PM EDT	Tornado Warning	MRX	Bledsoe, Rhea	52 min
Apr 27, 2:27 PM EDT	Tornado Warning	MRX	Hamilton, Marion	48 min
Apr 27, 2:56 PM EDT	Tornado Warning	MRX	Bradley, Polk	64 min
Apr 27, 3:04 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Loudon, McMinn, Meigs, Monroe, Morgan and 2 more	56 min
Apr 27, 3:07 PM EDT	High Wind Warning	MRX	Blount, Carter, Cocke, Greene, Johnson, Monroe and 2 more	11 hr
Apr 27, 3:11 PM EDT	Tornado Warning	MRX	McMinn, Meigs	49 min
Apr 27, 3:24 PM EDT	Severe Thunderstorm Warning	MRX	Hamilton	36 min
Apr 27, 3:38 PM EDT	Tornado Warning	MRX	Anderson, Blount, Knox, Loudon, Morgan, Roane	52 min
Apr 27, 3:43 PM EDT	Tornado Warning	MRX	Loudon, McMinn, Monroe	47 min
Apr 27, 3:53 PM EDT	Areal Flood Advisory	MRX	Bradley, Hamilton	3 hr
Apr 27, 4:00 PM EDT	Tornado Warning	MRX	Bradley, Hamilton, McMinn, Meigs, Polk	60 min
Apr 27, 4:09 PM EDT	Tornado Warning	MRX	Blount, Knox, Loudon, Monroe, Sevier	51 min
Apr 27, 4:25 PM EDT	Tornado Warning	MRX	McMinn, Monroe, Polk	65 min
Apr 27, 4:39 PM EDT	Areal Flood Advisory	MRX	Blount, Bradley, Knox, Loudon, McMinn, Meigs and 3 more	3 hr
Apr 27, 4:51 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Jefferson, Sevier	54 min
Apr 27, 4:56 PM EDT	Tornado Warning	MRX	Blount, Knox, Loudon, Sevier	49 min
Apr 27, 5:16 PM EDT	Tornado Warning	MRX	Hamilton, Marion, Sequatchie	59 min
Apr 27, 5:18 PM EDT	Severe Thunderstorm Warning	MRX	Campbell, Morgan, Scott	42 min
Apr 27, 5:29 PM EDT	Tornado Warning	MRX	Blount, Loudon, Monroe	16 min
Apr 27, 5:38 PM EDT	Tornado Warning	MRX	Campbell, Scott	37 min
Apr 27, 5:45 PM EDT	Tornado Warning	MRX	Anderson, Blount, Knox, Loudon, Sevier	32 min
Apr 27, 5:48 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Grainger, Greene, Hamblen, Hancock, Hawkins and 2 more	57 min
Apr 27, 5:59 PM EDT	Tornado Warning	MRX	Campbell, Claiborne, Morgan, Scott	61 min
Apr 27, 6:01 PM EDT	Tornado Warning	MRX	Bradley, Hamilton	59 min
Apr 27, 6:14 PM EDT	Tornado Warning	MRX	Marion	61 min
Apr 27, 6:39 PM EDT	Tornado Warning	MRX	Bradley, McMinn, Monroe, Polk	66 min
Apr 27, 6:40 PM EDT	Severe Thunderstorm Warning	MRX	Greene, Hawkins, Sullivan, Washington	50 min
Apr 27, 6:43 PM EDT	Tornado Warning	MRX	Hamilton, Marion, Sequatchie	62 min
Apr 27, 6:52 PM EDT	Tornado Warning	MRX	Bledsoe, Rhea	53 min
Apr 27, 6:57 PM EDT	Flash Flood Warning	MRX	Bradley, Hamilton, McMinn, Monroe	3 hr
Apr 27, 7:01 PM EDT	Tornado Warning	MRX	Campbell, Claiborne, Hancock	44 min
Apr 27, 7:01 PM EDT	Tornado Warning	MRX	Bradley, Hamilton, Meigs	59 min
Apr 27, 7:06 PM EDT	Tornado Warning	MRX	Blount, Knox, Monroe, Polk	54 min
Apr 27, 7:13 PM EDT	Flash Flood Warning	MRX	Campbell, Morgan, Scott	3 hr
Apr 27, 7:43 PM EDT	Tornado Warning	MRX	Bledsoe, Hamilton, Rhea, Sequatchie	62 min
Apr 27, 7:49 PM EDT	Tornado Warning	MRX	Blount, Cocke, Hamblen, Jefferson, Knox, Sevier	41 min
Apr 27, 7:53 PM EDT	Flash Flood Warning	MRX	Bledsoe, Marion, Sequatchie	3 hr
Apr 27, 7:54 PM EDT	Tornado Warning	MRX	Anderson, Blount, Claiborne, Grainger, Hamblen, Jefferson and 6 more	51 min

Nearby

Tornado Warnings in Tennessee, 2011 Every tornado warning in 2011 Tornadoes in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.