Alert archive / Tennessee / Tornado Warnings in 2011

Tornado Warning 6, NWS Morristown, TN

February 28, 2011Cherokee County, Clay County, North Carolina; Bradley County, Monroe County, Polk County, Tennessee

NWS Morristown, TN issued this tornado warning at Feb 28, 2011, 2:47 PM EST for Cherokee County, Clay County, North Carolina; Bradley County, Monroe County, Polk County, Tennessee. It was in force for 43 min. 4 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: Feb 28, 2011, 2:47 PM EST (19:47 UTC)
Expired: Feb 28, 2011, 3:30 PM EST
In force: 43 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon

Counties Cherokee County, NC, Clay County, NC, Bradley County, TN, Monroe County, TN, Polk County, TN

The radar

The Knoxville radar (KMRX), 131 km from the middle of the area, began a volume at 19:50 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
Feb 28, 3:00 PM EST	TSTM WND DMG	10 S Benton, TN	* 1 FATAL * 1 FATALITY REPORTED 10 MILES SOUTH OF BENTON IN THE OLD FORT AREA ON LADD SPRINGS RD. TREE FELL ON A MOBILE HOME AND KILLED A 75 YEAR OLD MAN.
Feb 28, 3:05 PM EST	TSTM WND DMG	3 Sw Benton, TN	NUMEROUS TREES AND POWER LINES DOWN IN OCOEE.
Feb 28, 3:05 PM EST	TSTM WND DMG	6 Ssw Benton, TN	NUMEROUS TREES AND POWER LINES DOWN.
Feb 28, 3:05 PM EST	TSTM WND DMG	Reliance, TN	NUMEROUS TREES DOWN IN RELIANCE.

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
Feb 28, 1:29 PM EST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.8 hours before the alert went out and 204 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: 1162 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 229 m²/s²
0-3 km storm-relative helicity: 350 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.

133 
WFUS54 KMRX 281947
TORMRX
NCC039-043-TNC011-123-139-282030-
/O.NEW.KMRX.TO.W.0006.110228T1947Z-110228T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
247 PM EST MON FEB 28 2011

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* TORNADO WARNING FOR...
  CHEROKEE COUNTY IN SOUTHWEST NORTH CAROLINA...
  CLAY COUNTY IN SOUTHWEST NORTH CAROLINA...
  BRADLEY COUNTY IN EAST TENNESSEE...
  EXTREME SOUTHERN MONROE COUNTY IN EAST TENNESSEE...
  POLK COUNTY IN EAST TENNESSEE...

* UNTIL 330 PM EST

* AT 246 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES SOUTH OF
  BENTON. DOPPLER RADAR SHOWED THIS TORNADO MOVING EAST AT 70 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  DUCKTOWN...MURPHY...ANDREWS...HAYESVILLE...RELIANCE...BIG FROG
  MOUNTAIN...ARCHVILLE...BULLET CREEK...TURTLETOWN...COKER CREEK...
  HOT HOUSE...VIOLET...HIAWASSE DAM...CULBERSON...UNAKA...MARBLE...
  BRASSTOWN...TUSQUITEE AND SHOOTING CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 800 PM EST MONDAY EVENING.

&&

LAT...LON 3501 8482 3528 8475 3528 8472 3527 8475
      3525 8469 3527 8466 3527 8452 3529 8450
      3529 8401 3522 8396 3525 8385 3525 8371
      3522 8368 3515 8373 3515 8365 3502 8352
      3499 8351
TIME...MOT...LOC 1947Z 271DEG 70KT 3509 8467

$$

1 follow-up statement

965 
WWUS54 KMRX 282009
SVSMRX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
309 PM EST MON FEB 28 2011

TNC011-282017-
/O.CAN.KMRX.TO.W.0006.000000T0000Z-110228T2030Z/
BRADLEY TN-
309 PM EST MON FEB 28 2011

...THE TORNADO WARNING FOR BRADLEY COUNTY IS CANCELLED...

THE STORMS MOVED OUT OF BRADLEY COUNTY.

LAT...LON 3501 8464 3524 8461 3529 8449 3529 8402
      3522 8396 3525 8385 3525 8371 3522 8368
      3519 8371 3515 8373 3515 8365 3502 8352
      3499 8351
TIME...MOT...LOC 2007Z 262DEG 56KT 3519 8451

$$

NCC039-043-TNC123-139-282030-
/O.CON.KMRX.TO.W.0006.000000T0000Z-110228T2030Z/
CHEROKEE NC-CLAY NC-MONROE TN-POLK TN-
309 PM EST MON FEB 28 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM EST FOR POLK...
EXTREME SOUTHERN MONROE...CLAY AND CHEROKEE COUNTIES...

AT 304 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR RELIANCE...OR NEAR
BENTON...MOVING EAST AT 65 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  DUCKTOWN...MURPHY...ANDREWS...HAYESVILLE...BULLET CREEK...
  TURTLETOWN...COKER CREEK...HOT HOUSE...VIOLET...HIAWASSE DAM...
  UNAKA...MARBLE...BRASSTOWN...TUSQUITEE AND SHOOTING CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 800 PM EST MONDAY EVENING FOR
SOUTHWEST NORTH CAROLINA AND EAST TENNESSEE.

&&

LAT...LON 3501 8464 3524 8461 3529 8449 3529 8402
      3522 8396 3525 8385 3525 8371 3522 8368
      3519 8371 3515 8373 3515 8365 3502 8352
      3499 8351
TIME...MOT...LOC 2007Z 262DEG 56KT 3519 8451

$$

GM

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 27, 8:21 PM EST	Dense Fog Advisory	MRX	Anderson, Blount, Campbell, Carter, Claiborne, Cocke and 17 more	8 hr
Feb 28, 8:38 AM EST	Severe Thunderstorm Warning	MRX	Campbell, Scott	52 min
Feb 28, 9:28 AM EST	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Claiborne, Hancock, Scott, Union	47 min
Feb 28, 10:00 AM EST	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Morgan, Scott	30 min
Feb 28, 10:15 AM EST	River Flood Warning	MRX	Claiborne, Grainger, Hancock	47 hr
Feb 28, 10:15 AM EST	River Flood Warning	MRX	Sevier	17 hr
Feb 28, 10:15 AM EST	River Flood Warning	MRX	Claiborne, Hancock	27 hr
Feb 28, 10:26 AM EST	Areal Flood Advisory	MRX	Morgan, Scott	3 hr
Feb 28, 10:40 AM EST	Severe Thunderstorm Warning	MRX	Campbell, Claiborne, Hancock, Union	50 min
Feb 28, 10:56 AM EST	Areal Flood Warning	MRX	Anderson, Campbell, Claiborne, Morgan, Scott, Union	6 hr
Feb 28, 11:15 AM EST	Severe Thunderstorm Warning	MRX	Bledsoe, Rhea	45 min
Feb 28, 12:23 PM EST	Severe Thunderstorm Warning	MRX	Anderson, Knox	37 min
Feb 28, 12:48 PM EST	Tornado Warning	MRX	Anderson, Blount, Cocke, Jefferson, Knox, Sevier	42 min
Feb 28, 1:02 PM EST	Areal Flood Warning	MRX	Blount, Cocke, Grainger, Greene, Hamblen, Hancock and 8 more	12 hr
Feb 28, 1:17 PM EST	Tornado Warning	MRX	Cocke, Grainger, Greene, Hamblen, Hawkins, Jefferson and 1 more	25 min
Feb 28, 1:43 PM EST	Severe Thunderstorm Warning	MRX	Bledsoe, Hamilton, Marion, Meigs, Rhea, Sequatchie	32 min
Feb 28, 1:48 PM EST	Tornado Warning	MRX	Hamilton, Marion, Sequatchie	42 min
Feb 28, 2:22 PM EST	Tornado Warning	MRX	Bradley, Hamilton	38 min
Feb 28, 2:33 PM EST	Severe Thunderstorm Warning	MRX	Bradley, Hamilton, McMinn, Meigs, Monroe, Rhea	42 min
Feb 28, 3:08 PM EST	Severe Thunderstorm Warning	MRX	Blount, Monroe	37 min
Feb 28, 4:42 PM EST	Areal Flood Warning	MRX	Anderson, Campbell, Claiborne, Grainger, Hancock, Knox and 4 more	3 hr

Nearby

Tornado Warnings in Tennessee, 2011 Tornado Warnings in North Carolina, 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.