Alert archive / Tennessee / Tornado Warnings in 2011
Tornado Warning 1, NWS Morristown, TN
NWS Morristown, TN issued this tornado warning at Feb 25, 2011, 12:04 AM CST for Marion County, Tennessee. It was in force for 41 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
- Feb 25, 2011, 12:04 AM CST (06:04 UTC)
- Expired
- Feb 25, 2011, 12:45 AM CST
- In force
- 41 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
County Marion County, TN
The radar
The Northeast Alabama radar (KHTX), 45 km from the middle of the area, began a volume at 06:07 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 25, 12:30 AM CST | TSTM WND DMG | Whitwell, TN | FEW TREES DOWN ON WHITWELL MOUNTAIN. |
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 24, 10:59 PM CST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 6.1 hours before the alert went out and 134 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.
- Mixed-layer CAPE
- 17 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 793 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 538 m²/s²
- 0-3 km storm-relative helicity
- 629 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
587
WFUS54 KMRX 250604
TORMRX
TNC115-250645-
/O.NEW.KMRX.TO.W.0001.110225T0604Z-110225T0645Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
1204 AM CST FRI FEB 25 2011
THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A
* TORNADO WARNING FOR...
MARION COUNTY IN EAST TENNESSEE...
* UNTIL 1245 AM CST
* AT 1258 AM EST/1158 PM CST/...NATIONAL WEATHER SERVICE DOPPLER
RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO 10 MILES SOUTHWEST OF SEWANEE...OR 21 MILES NORTHWEST OF
BRIDGEPORT. DOPPLER RADAR SHOWED THIS TORNADO MOVING EAST AT 60
MPH.
* LOCATIONS IN THE WARNING INCLUDE...
JASPER...MONTEAGLE...SOUTH PITTSBURG...WHITWELL...ORME...HALETOWN
(GUILD)...MARTIN SPRINGS...GRIFFITH CREEK AND POWELLS CROSSROADS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.
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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 AM CST FRIDAY
MORNING FOR SOUTHWEST NORTH CAROLINA AND CENTRAL TENNESSEE AND
SOUTHWEST VIRGINIA.
&&
LAT...LON 3524 8586 3525 8581 3523 8577 3523 8574
3525 8570 3529 8570 3533 8558 3523 8543
3509 8539 3499 8547 3498 8562 3499 8588
3518 8588
TIME...MOT...LOC 0604Z 249DEG 57KT 3512 8593
$$2 follow-up statements
598
WWUS54 KMRX 250621
SVSMRX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1221 AM CST FRI FEB 25 2011
TNC115-250645-
/O.CON.KMRX.TO.W.0001.000000T0000Z-110225T0645Z/
MARION TN-
1221 AM CST FRI FEB 25 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 AM CST FOR MARION
COUNTY...
AT 1217 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED 7 MILES NORTH OF SOUTH
PITTSBURG...OR 8 MILES NORTHWEST OF JASPER...MOVING EAST AT 60 MPH.
LOCATIONS IN THE WARNING INCLUDE...
WHITWELL...HALETOWN (GUILD)...MARTIN SPRINGS...GRIFFITH CREEK AND
POWELLS CROSSROADS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 AM CST FRIDAY
MORNING FOR SOUTHWEST NORTH CAROLINA AND CENTRAL TENNESSEE AND
SOUTHWEST VIRGINIA.
&&
LAT...LON 3524 8586 3525 8581 3523 8577 3523 8574
3525 8570 3529 8570 3533 8558 3523 8543
3509 8539 3499 8547 3498 8562 3499 8588
3518 8588
TIME...MOT...LOC 0621Z 249DEG 57KT 3514 8568
$$163
WWUS54 KMRX 250643
SVSMRX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1243 AM CST FRI FEB 25 2011
TNC115-250653-
/O.EXP.KMRX.TO.W.0001.000000T0000Z-110225T0645Z/
MARION TN-
1243 AM CST FRI FEB 25 2011
...THE TORNADO WARNING FOR MARION COUNTY WILL EXPIRE AT 1245 AM
CST...
THE STORMS THAT PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE
LEVELS. THEREFORE...THE WARNING HAS BEEN ALLOWED TO EXPIRE.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 AM CST FRIDAY
MORNING FOR SOUTHWEST NORTH CAROLINA AND CENTRAL TENNESSEE AND
SOUTHWEST VIRGINIA.
LAT...LON 3524 8586 3525 8581 3523 8577 3523 8574
3525 8570 3529 8570 3533 8558 3523 8543
3509 8539 3499 8547 3498 8562 3499 8588
3518 8588
TIME...MOT...LOC 0643Z 251DEG 53KT 3511 8532
$$The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 24, 11:27 PM CST | Severe Thunderstorm Warning | MRX | Campbell, Morgan, Scott | 63 min |
| Feb 24, 11:47 PM CST | Severe Thunderstorm Warning | MRX | Bledsoe, Morgan, Sequatchie | 28 min |
| Feb 25, 12:14 AM CST | Severe Thunderstorm Warning | MRX | Anderson, Campbell, Claiborne, Morgan, Roane, Scott and 1 more | 61 min |
| Feb 25, 12:16 AM CST | Severe Thunderstorm Warning | MRX | Bledsoe, Hamilton, Meigs, Rhea, Sequatchie | 29 min |
| Feb 25, 12:31 AM CST | Severe Thunderstorm Warning | MRX | Hamilton, Marion | 44 min |
| Feb 25, 12:50 AM CST | Severe Thunderstorm Warning | MRX | Anderson, Blount, Claiborne, Grainger, Hancock, Jefferson and 4 more | 40 min |
| Feb 25, 12:52 AM CST | Severe Thunderstorm Warning | MRX | Bledsoe, Hamilton, Meigs, Rhea | 23 min |
| Feb 25, 1:03 AM CST | Severe Thunderstorm Warning | MRX | Bradley, Hamilton, Meigs | 27 min |
| Feb 25, 1:15 AM CST | Severe Thunderstorm Warning | MRX | Loudon, McMinn, Monroe | 45 min |
| Feb 25, 1:22 AM CST | Severe Thunderstorm Warning | MRX | Blount, Cocke, Grainger, Greene, Hamblen, Hancock and 4 more | 42 min |
| Feb 25, 1:23 AM CST | Severe Thunderstorm Warning | MRX | Polk | 37 min |
| Feb 25, 1:37 AM CST | Severe Thunderstorm Warning | MRX | McMinn, Monroe, Polk | 38 min |
| Feb 25, 3:16 AM CST | Areal Flood Advisory | MRX | Carter, Sullivan, Washington | 119 min |
Nearby
Tornado Warnings in Tennessee, 2011Every tornado warning in 2011Tornadoes 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.