Alert archive / Tennessee / Tornado Warnings in 2010

Tornado Warning 21, NWS Morristown, TN

October 26, 2010Bledsoe County, Hamilton County, Sequatchie County, Tennessee

NWS Morristown, TN issued this tornado warning at Oct 26, 2010, 3:24 PM CDT for Bledsoe County, Hamilton County, Sequatchie County, Tennessee. It was in force for 51 min. 1 report 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
Oct 26, 2010, 3:24 PM CDT (20:24 UTC)
Expired
Oct 26, 2010, 4:15 PM CDT
In force
51 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon

Counties Bledsoe County, TN, Hamilton County, TN, Sequatchie County, TN

The radar

The Northeast Alabama radar (KHTX), 86 km from the middle of the area, began a volume at 20:26 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

TimeReportWhereRemark
Oct 26, 3:40 PM CDTTSTM WND DMGDunlap, TNNUMEROUS TREES DOWN COUNTYWIDE.

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.

IssuedProductOfficeLasted
Oct 26, 9:27 AM CDTTornado Watch PDSSPC11 hr
Oct 26, 1:16 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.4 hours before the alert went out and 140 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-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2010-10-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 324 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2010-10-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 403 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
324 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
796 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
403 m²/s²
0-3 km storm-relative helicity
486 m²/s²
Significant tornado parameter
0.8
Supercell composite
3.4

Open this sounding in Storm Lab

The text

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

420 
WFUS54 KMRX 262024
TORMRX
TNC007-065-153-262115-
/O.NEW.KMRX.TO.W.0021.101026T2024Z-101026T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
324 PM CDT TUE OCT 26 2010

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN BLEDSOE COUNTY IN EAST TENNESSEE...
  NORTHWEST HAMILTON COUNTY IN EAST TENNESSEE...
  SEQUATCHIE COUNTY IN EAST TENNESSEE...

* UNTIL 415 PM CDT /515 PM EDT/

* AT 321 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES EAST OF
  TRACY CITY...OR 13 MILES NORTH OF JASPER. DOPPLER RADAR SHOWED THIS
  TORNADIC STORM MOVING NORTHEAST AT 50 MPH.

THIS IS A DANGEROUS STORM WITH STRONG ROTATION. TAKE COVER NOW!!

* THIS TORNADIC STORM WILL BE NEAR...
  DUNLAP AROUND 340 PM CDT.

OTHER LOCATIONS AFFECTED BY THIS TORNADIC THUNDERSTORM INCLUDE
CARTWRIGHT...PALIO AND BRAYTON.


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 900 PM CDT THIS EVENING.

&&

LAT...LON 3539 8550 3542 8550 3544 8553 3561 8524
      3548 8512 3546 8513 3545 8510 3543 8510
      3539 8505 3524 8541 3528 8545 3527 8547
      3533 8557
TIME...MOT...LOC 2023Z 240DEG 44KT 3526 8562

$$

DMG
2 follow-up statements
676 
WWUS54 KMRX 262046
SVSMRX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
346 PM CDT TUE OCT 26 2010

TNC007-065-153-262115-
/O.CON.KMRX.TO.W.0021.000000T0000Z-101026T2115Z/
BLEDSOE TN-SEQUATCHIE TN-HAMILTON TN-
346 PM CDT TUE OCT 26 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT/515 PM EDT/
FOR HAMILTON...SEQUATCHIE AND BLEDSOE COUNTIES...

AT 342 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 6 MILES EAST OF
DUNLAP...MOVING NORTHEAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF
  BLEDSOE...HAMILTON AND SEQUATCHIE COUNTIES...INCLUDING THE
  FOLLOWING LOCATIONS... BRAYTON AND SALE 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 900 PM CDT TUESDAY
EVENING/1000 PM EDT TUESDAY EVENING/ FOR SOUTHWEST NORTH CAROLINA AND
CENTRAL TENNESSEE AND SOUTHWEST VIRGINIA.

&&

LAT...LON 3539 8550 3542 8550 3544 8553 3561 8524
      3548 8512 3546 8513 3545 8510 3543 8510
      3539 8505 3524 8541 3528 8545 3527 8547
      3533 8557
TIME...MOT...LOC 2046Z 241DEG 44KT 3540 8523

$$

MJB
045 
WWUS54 KMRX 262114
SVSMRX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
414 PM CDT TUE OCT 26 2010

TNC007-065-153-262124-
/O.EXP.KMRX.TO.W.0021.000000T0000Z-101026T2115Z/
BLEDSOE TN-SEQUATCHIE TN-HAMILTON TN-
414 PM CDT TUE OCT 26 2010

...THE TORNADO WARNING FOR HAMILTON...SEQUATCHIE AND BLEDSOE COUNTIES
WILL EXPIRE AT 415 PM CDT/515 PM EDT/...

THE STORMS THAT PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED
AREA. THEREFORE...THE WARNING HAS BEEN ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT TUESDAY
EVENING/1000 PM EDT TUESDAY EVENING/ FOR SOUTHWEST NORTH CAROLINA AND
CENTRAL TENNESSEE AND SOUTHWEST VIRGINIA.

LAT...LON 3539 8550 3542 8550 3544 8553 3561 8524
      3548 8512 3546 8513 3545 8510 3543 8510
      3539 8505 3524 8541 3528 8545 3527 8547
      3533 8557
TIME...MOT...LOC 2114Z 241DEG 44KT 3556 8486

$$

MJB

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 26, 1:33 AM CDTHigh Wind WarningMRXBlount, Cocke, Monroe, Sevier19 hr
Oct 26, 1:33 AM CDTWind AdvisoryMRXAnderson, Bledsoe, Blount, Bradley, Campbell, Carter and 27 more19 hr
Oct 26, 1:12 PM CDTTornado WarningMRXMorgan, Roane33 min
Oct 26, 1:24 PM CDTTornado WarningMRXMeigs, Rhea, Roane22 min
Oct 26, 1:31 PM CDTTornado WarningMRXAnderson, Campbell29 min
Oct 26, 1:56 PM CDTTornado WarningMRXBradley, Hamilton34 min
Oct 26, 2:19 PM CDTTornado WarningMRXBradley, Hamilton, McMinn26 min
Oct 26, 2:35 PM CDTTornado WarningMRXBradley, Loudon, McMinn, Meigs, Monroe40 min
Oct 26, 2:57 PM CDTTornado WarningMRXMarion48 min
Oct 26, 3:03 PM CDTTornado WarningMRXBlount, Knox42 min
Oct 26, 3:10 PM CDTTornado WarningMRXBradley, Hamilton, Polk50 min
Oct 26, 3:18 PM CDTSevere Thunderstorm WarningMRXMorgan, Scott42 min
Oct 26, 3:26 PM CDTTornado WarningMRXMorgan, Scott34 min
Oct 26, 3:42 PM CDTSevere Thunderstorm WarningMRXMorgan33 min
Oct 26, 3:45 PM CDTSevere Thunderstorm WarningMRXMcMinn, Monroe60 min
Oct 26, 3:54 PM CDTTornado WarningMRXMeigs, Rhea38 min
Oct 26, 3:55 PM CDTTornado WarningMRXCampbell, Claiborne, Scott35 min
Oct 26, 4:03 PM CDTTornado WarningMRXCampbell, Morgan, Scott27 min
Oct 26, 4:11 PM CDTSevere Thunderstorm WarningMRXHamilton, Marion, Sequatchie49 min
Oct 26, 4:45 PM CDTSevere Thunderstorm WarningMRXBradley, McMinn, Meigs60 min
Oct 26, 5:09 PM CDTSevere Thunderstorm WarningMRXBledsoe, Hamilton, Meigs, Rhea, Roane, Sequatchie66 min
Oct 26, 5:16 PM CDTTornado WarningMRXHamilton, Marion44 min
Oct 26, 5:17 PM CDTSevere Thunderstorm WarningMRXAnderson, Campbell, Morgan, Scott43 min
Oct 26, 5:37 PM CDTSevere Thunderstorm WarningMRXBlount, Loudon, Monroe23 min
Oct 26, 5:51 PM CDTTornado WarningMRXBradley39 min
Oct 26, 5:58 PM CDTSevere Thunderstorm WarningMRXBlount, Knox32 min
Oct 26, 6:10 PM CDTTornado WarningMRXMcMinn, Polk50 min
Oct 26, 6:26 PM CDTSevere Thunderstorm WarningMRXJefferson, Knox, Sevier18 min
Oct 26, 6:46 PM CDTTornado WarningMRXMonroe44 min

Nearby

Tornado Warnings in Tennessee, 2010Every tornado warning in 2010Tornadoes in 2010

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.