Alert archive / Tennessee / Tornado Warnings in 2014

Tornado Warning 8, NWS Morristown, TN

April 28, 2014McMinn County, Monroe County, Tennessee

NWS Morristown, TN issued this tornado warning at Apr 28, 2014, 11:44 PM EDT for McMinn County, Monroe County, Tennessee. It was in force for 46 min. 3 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 28, 2014, 11:44 PM EDT (03:44 UTC)
Expired
Apr 29, 2014, 12:30 AM EDT
In force
46 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon

Counties McMinn County, TN, Monroe County, TN

The radar

The Knoxville radar (KMRX), 133 km from the middle of the area, began a volume at 03:45 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
Apr 28, 11:50 PM EDTTSTM WND DMGEnglewood, TNSEVERAL TREES DOWN.
Apr 28, 11:54 PM EDTHAIL 1.754 Sw Madisonville, TN
Apr 29, 12:15 AM EDTTSTM WND DMGMadisonville, 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
Apr 28, 6:37 PM EDTTornado Watch PDSSPC6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 3.7 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-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2014-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1019 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2014-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 335 square meters per square second.1939587897Sfc1 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
1019 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
789 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
335 m²/s²
0-3 km storm-relative helicity
375 m²/s²
Significant tornado parameter
2.7
Supercell composite
15.6

Open this sounding in Storm Lab

The text

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

412 
WFUS54 KMRX 290344
TORMRX
TNC107-123-290430-
/O.NEW.KMRX.TO.W.0008.140429T0344Z-140429T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
1144 PM EDT MON APR 28 2014

THE NATIONAL WEATHER SERVICE IN MORRISTOWN  HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN MCMINN COUNTY IN EASTERN TENNESSEE...
  NORTHWESTERN MONROE COUNTY IN EASTERN TENNESSEE...

* UNTIL 1230 AM EDT
    
* AT 1144 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  OVER ETOWAH...OR 7 MILES SOUTH OF ATHENS...AND MOVING NORTHEAST AT
  40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ATHENS...SWEETWATER...MADISONVILLE...ETOWAH...ENGLEWOOD...NIOTA...
  MOUNT VERNON AND DENTVILLE.

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 IN A MOBILE HOME OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3535 8470 3566 8445 3551 8416 3527 8455
      3527 8460
TIME...MOT...LOC 0344Z 219DEG 34KT 3535 8456 

$$

DGS
3 follow-up statements
062 
WWUS54 KMRX 290353
SVSMRX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1153 PM EDT MON APR 28 2014

TNC107-123-290430-
/O.CON.KMRX.TO.W.0008.000000T0000Z-140429T0430Z/
MCMINN TN-MONROE TN-
1153 PM EDT MON APR 28 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT FOR EASTERN
MCMINN AND NORTHWESTERN MONROE COUNTIES...
    
AT 1153 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
ETOWAH...OR 7 MILES EAST OF ATHENS...MOVING NORTHEAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
ATHENS...SWEETWATER...MADISONVILLE...ETOWAH...ENGLEWOOD...NIOTA...
MOUNT VERNON AND DENTVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORNADOES ARE EXTREMELY DIFFICULT TO SEE AND CONFIRM AT NIGHT. DO NOT
WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW!

&&

LAT...LON 3535 8470 3566 8445 3551 8416 3527 8455
      3527 8460
TIME...MOT...LOC 0353Z 223DEG 43KT 3541 8447 

$$
DGS
478 
WWUS54 KMRX 290404
SVSMRX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1204 AM EDT TUE APR 29 2014

TNC107-290413-
/O.CAN.KMRX.TO.W.0008.000000T0000Z-140429T0430Z/
MCMINN TN-

1204 AM EDT TUE APR 29 2014

...THE TORNADO WARNING FOR EASTERN MCMINN COUNTY IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT 
OF THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3539 8441 3545 8443 3546 8445 3547 8445
      3552 8448 3561 8436 3551 8416 3536 8441
TIME...MOT...LOC 0403Z 232DEG 35KT 3543 8436 

$$

TNC123-290430-
/O.CON.KMRX.TO.W.0008.000000T0000Z-140429T0430Z/
MONROE TN-
1204 AM EDT TUE APR 29 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT FOR
NORTHWESTERN MONROE COUNTY...
    
AT 1203 AM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
MADISONVILLE...MOVING NORTHEAST AT 40 MPH.

IN ADDITION...GOLFBALL SIZED HAIL WAS REPORTED SOUTHWEST OF 
MADISONVILLE.

LOCATIONS IMPACTED INCLUDE...
MADISONVILLE AND MOUNT VERNON. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORNADOES ARE EXTREMELY DIFFICULT TO SEE AND CONFIRM AT NIGHT. DO NOT
WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW!

&&

LAT...LON 3539 8441 3545 8443 3546 8445 3547 8445
      3552 8448 3561 8436 3551 8416 3536 8441
TIME...MOT...LOC 0403Z 232DEG 35KT 3543 8436 

$$

DGS
289 
WWUS54 KMRX 290424
SVSMRX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1224 AM EDT TUE APR 29 2014

TNC123-290434-
/O.EXP.KMRX.TO.W.0008.000000T0000Z-140429T0430Z/
MONROE TN-
1224 AM EDT TUE APR 29 2014

...THE TORNADO WARNING FOR NORTHWESTERN MONROE COUNTY WILL EXPIRE AT
1230 AM EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3539 8441 3545 8443 3546 8445 3547 8445
      3552 8448 3561 8436 3551 8416 3536 8441
TIME...MOT...LOC 0422Z 219DEG 34KT 3543 8436 

$$

DGS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 28, 9:25 PM EDTSevere Thunderstorm WarningMRXBledsoe, Marion, Sequatchie35 min
Apr 28, 9:40 PM EDTTornado WarningMRXBradley, Hamilton, Marion50 min
Apr 28, 9:52 PM EDTSevere Thunderstorm WarningMRXBledsoe, Rhea53 min
Apr 28, 10:19 PM EDTSevere Thunderstorm WarningMRXBradley, Hamilton, Loudon, McMinn, Meigs, Monroe and 2 more56 min
Apr 28, 10:21 PM EDTTornado WarningMRXBledsoe, Rhea24 min
Apr 28, 10:34 PM EDTSevere Thunderstorm WarningMRXCampbell, Morgan, Scott56 min
Apr 28, 11:11 PM EDTTornado WarningMRXBlount, Knox, Loudon, McMinn, Monroe49 min
Apr 28, 11:35 PM EDTSevere Thunderstorm WarningMRXBradley40 min
Apr 28, 11:43 PM EDTSevere Thunderstorm WarningMRXMcMinn, Monroe47 min
Apr 28, 11:51 PM EDTSevere Thunderstorm WarningMRXBlount, Knox, Loudon, Sevier54 min
Apr 29, 12:11 AM EDTTornado WarningMRXBlount, Loudon, Monroe34 min
Apr 29, 1:14 AM EDTTornado WarningMRXBlount, Knox, Loudon46 min
Apr 29, 1:25 AM EDTSevere Thunderstorm WarningMRXBlount, Loudon, Monroe35 min
Apr 29, 1:40 AM EDTAreal Flood AdvisoryMRXBradley, Hamilton, McMinn3 hr
Apr 29, 1:57 AM EDTSevere Thunderstorm WarningMRXHancock, Hawkins48 min
Apr 29, 4:39 AM EDTSpecial Weather StatementMRXBradley, McMinn, Polk51 min
Apr 29, 10:47 AM EDTRiver Flood WarningMRXCocke, Jefferson62 hr
Apr 29, 3:37 PM EDTSpecial Weather StatementMRXCarter, Johnson, Sullivan38 min

Nearby

Tornado Warnings in Tennessee, 2014Every tornado warning in 2014Tornadoes in 2014

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.