Alert archive / Tennessee / Tornado Warnings in 2023

Tornado Warning 13, NWS Morristown, TN

June 11, 2023Campbell County, Morgan County, Scott County, Tennessee

NWS Morristown, TN issued this tornado warning at Jun 11, 2023, 6:07 PM EDT for Campbell County, Morgan County, Scott County, Tennessee. It was in force for 38 min. 2 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
Jun 11, 2023, 6:07 PM EDT (22:07 UTC)
Expired
Jun 11, 2023, 6:45 PM EDT
In force
38 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Campbell County, TN, Morgan County, TN, Scott County, TN

The radar

The Knoxville radar (KMRX), 112 km from the middle of the area, began a volume at 22:08 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
Jun 11, 6:11 PM EDTTORNADO4 W Huntsville, TNEF1 Tornado in Helenwood TN. From Storm Survey. Numerous trees down along Russ Lane. More trees uprooted on Silcox Ford Road.
Jun 11, 6:11 PM EDTTORNADO4 W Huntsville, TNEF1 Tornado in Helenwood TN. From Storm Survey. Numerous trees down along Russ Lane. More trees uprooted on Silcox Ford Road.

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
Jun 11, 4:34 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.1 hours before the alert went out and 180 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 2023-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 77 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 2023-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 183 square meters per square second.193958Sfc1 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
77 J/kg
Mixed-layer CIN
-164 J/kg
Mixed-layer LCL
1030 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
183 m²/s²
0-3 km storm-relative helicity
199 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

453 
WFUS54 KMRX 112207
TORMRX
TNC013-129-151-112300-
/O.NEW.KMRX.TO.W.0013.230611T2207Z-230611T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Morristown TN
607 PM EDT Sun Jun 11 2023

The National Weather Service in Morristown has issued a

* Tornado Warning for...
  North central Morgan County in east Tennessee...
  West central Campbell County in east Tennessee...
  Central Scott County in east Tennessee...

* Until 700 PM EDT.
    
* At 607 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Helenwood, or 10 miles south of Oneida, moving
  east at 30 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Oneida and Huntsville around 610 PM EDT.

Other locations impacted by this tornadic thunderstorm include Rugby,
Rugby State Park, Ketchen, Honey Creek State Park, Norma, Robbins,
Elgin and Winfield.

This includes Interstate 75 in Tennessee near mile marker 146.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3658 8429 3630 8429 3634 8474 3635 8474
      3635 8473 3637 8473 3637 8470 3638 8469
      3639 8469 3640 8466 3641 8467 3641 8466
      3644 8469 3648 8471
TIME...MOT...LOC 2207Z 275DEG 25KT 3638 8458 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

CJM
2 follow-up statements
114 
WWUS54 KMRX 112222
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
622 PM EDT Sun Jun 11 2023

TNC129-112231-
/O.CAN.KMRX.TO.W.0013.000000T0000Z-230611T2300Z/
Morgan TN-
622 PM EDT Sun Jun 11 2023

...THE TORNADO WARNING FOR NORTH CENTRAL MORGAN COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
east Tennessee.

LAT...LON 3656 8429 3634 8429 3636 8449 3636 8451
      3637 8453 3638 8456 3640 8456 3641 8455
      3647 8455 3649 8456 3651 8449
TIME...MOT...LOC 2221Z 275DEG 25KT 3637 8445 

$$

TNC013-151-112300-
/O.CON.KMRX.TO.W.0013.000000T0000Z-230611T2300Z/
Campbell TN-Scott TN-
622 PM EDT Sun Jun 11 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR WEST
CENTRAL CAMPBELL AND NORTHEASTERN SCOTT COUNTIES...
    
At 621 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Huntsville, or 10 miles south of Oneida, moving east
at 30 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
west central Campbell and northeastern Scott Counties.

This includes Interstate 75 in Tennessee near mile marker 146.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3656 8429 3634 8429 3636 8449 3636 8451
      3637 8453 3638 8456 3640 8456 3641 8455
      3647 8455 3649 8456 3651 8449
TIME...MOT...LOC 2221Z 275DEG 25KT 3637 8445 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

CJM
946 
WWUS54 KMRX 112245
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
645 PM EDT Sun Jun 11 2023

TNC013-151-112255-
/O.CAN.KMRX.TO.W.0013.000000T0000Z-230611T2300Z/
Campbell TN-Scott TN-
645 PM EDT Sun Jun 11 2023

...THE TORNADO WARNING FOR WEST CENTRAL CAMPBELL AND NORTHEASTERN
SCOTT COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
east Tennessee.

Remember, a Severe Thunderstorm Warning still remains in effect.

LAT...LON 3656 8429 3634 8429 3636 8449 3636 8451
      3637 8453 3638 8456 3640 8456 3641 8455
      3647 8455 3649 8456 3651 8449
TIME...MOT...LOC 2243Z 275DEG 25KT 3636 8424 

$$

CJM

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 11, 5:35 PM EDTTornado WarningMRXCampbell, Morgan, Scott40 min
Jun 11, 6:34 PM EDTSevere Thunderstorm WarningMRXLoudon, McMinn, Meigs, Monroe, Rhea, Roane56 min
Jun 11, 6:35 PM EDTTornado WarningMRXMorgan40 min
Jun 11, 6:39 PM EDTTornado WarningMRXCampbell, Scott39 min
Jun 11, 6:42 PM EDTSevere Thunderstorm WarningMRXCampbell, Morgan, Scott63 min
Jun 11, 7:01 PM EDTSevere Thunderstorm WarningMRXMorgan, Scott46 min
Jun 11, 7:04 PM EDTTornado WarningMRXCampbell, Scott25 min
Jun 11, 7:08 PM EDTTornado WarningMRXAnderson, Campbell, Knox, Morgan, Scott52 min
Jun 11, 7:24 PM EDTTornado WarningMRXMorgan, Scott51 min
Jun 11, 7:26 PM EDTSevere Thunderstorm WarningMRXBlount, Knox, Loudon, Roane64 min
Jun 11, 7:56 PM EDTSevere Thunderstorm WarningMRXAnderson, Grainger, Jefferson, Knox, Union64 min

Nearby

Tornado Warnings in Tennessee, 2023Every tornado warning in 2023Tornadoes in 2023

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.