Alert archive / Tennessee / Tornado Warnings in 2012

Tornado Warning 12, NWS Morristown, TN

March 2, 2012Marion County, Tennessee

NWS Morristown, TN issued this tornado warning at Mar 2, 2012, 10:31 AM CST for Marion County, Tennessee. It was in force for 44 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: Mar 2, 2012, 10:31 AM CST (16:31 UTC)
Expired: Mar 2, 2012, 11:15 AM CST
In force: 44 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon

County Marion County, TN

The radar

The Northeast Alabama radar (KHTX), 46 km from the middle of the area, began a volume at 16:31 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
Mar 2, 11:04 AM CST	TSTM WND DMG	1 W Whitwell, TN	RV BLOWN OVER.

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
Mar 2, 9:25 AM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 4.5 hours before the alert went out and 127 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: 1667 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 523 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 175 m²/s²
0-3 km storm-relative helicity: 169 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.1

Open this sounding in Storm Lab

The text

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

925 
WFUS54 KMRX 021631
TORMRX
TNC115-021715-
/O.NEW.KMRX.TO.W.0012.120302T1631Z-120302T1715Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
1031 AM CST FRI MAR 2 2012

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* TORNADO WARNING FOR...
  MARION COUNTY IN EAST TENNESSEE...

* UNTIL 1115 AM CST

* AT 1026 AM CST...LOCAL LAW ENFORCEMENT REPORTED A TORNADO 10 MILES
  SOUTH OF SEWANEE...OR 17 MILES NORTHWEST OF BRIDGEPORT. DOPPLER
  RADAR SHOWED THIS TORNADO MOVING NORTHEAST AT 55 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  MONTEAGLE...WHITWELL...MARTIN SPRINGS...GRIFFITH CREEK AND POWELLS
  CROSSROADS.

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 300 PM CST FRIDAY AFTERNOON
FOR CENTRAL TENNESSEE.

&&

LAT...LON 3525 8585 3525 8582 3523 8578 3522 8574
      3524 8570 3529 8571 3531 8564 3529 8555
      3520 8540 3501 8587 3523 8587
TIME...MOT...LOC 1631Z 244DEG 46KT 3509 8591

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 2, 2:00 AM CST	Wind Advisory	MRX	Blount, Carter, Cocke, Greene, Johnson, Sevier and 1 more	21 hr
Mar 2, 9:58 AM CST	Severe Thunderstorm Warning	MRX	Hawkins, Sullivan	32 min
Mar 2, 9:59 AM CST	Flood Watch	MRX	Anderson, Bledsoe, Blount, Bradley, Campbell, Carter and 27 more	14 hr
Mar 2, 10:25 AM CST	Tornado Warning	MRX	Bledsoe, Sequatchie	35 min
Mar 2, 10:39 AM CST	Tornado Warning	MRX	Morgan	22 min
Mar 2, 10:49 AM CST	Tornado Warning	MRX	Hamilton, Marion	41 min
Mar 2, 10:55 AM CST	Tornado Warning	MRX	Campbell, Morgan, Scott	35 min
Mar 2, 10:57 AM CST	Tornado Warning	MRX	Bledsoe, Rhea	33 min
Mar 2, 11:16 AM CST	Tornado Warning	MRX	Hamilton, Marion, Sequatchie	44 min
Mar 2, 11:25 AM CST	Tornado Warning	MRX	Claiborne, Hancock	35 min
Mar 2, 11:29 AM CST	Tornado Warning	MRX	Campbell, Claiborne	31 min
Mar 2, 11:30 AM CST	Tornado Warning	MRX	Loudon, Meigs, Rhea, Roane	30 min
Mar 2, 11:44 AM CST	Severe Thunderstorm Warning	MRX	Hamilton, Meigs, Rhea	31 min
Mar 2, 11:50 AM CST	Tornado Warning	MRX	Bradley, Hamilton, McMinn, Polk	25 min
Mar 2, 12:04 PM CST	Severe Thunderstorm Warning	MRX	Blount, Knox	41 min
Mar 2, 12:19 PM CST	Tornado Warning	MRX	Knox, Sevier	26 min
Mar 2, 12:23 PM CST	Tornado Warning	MRX	Bradley, McMinn, Monroe, Polk	37 min
Mar 2, 12:39 PM CST	Tornado Warning	MRX	Cocke, Grainger, Hamblen, Jefferson, Knox, Sevier	36 min
Mar 2, 12:49 PM CST	Tornado Warning	MRX	Blount, Monroe	41 min
Mar 2, 1:13 PM CST	Severe Thunderstorm Warning	MRX	Blount, Monroe	47 min
Mar 2, 2:34 PM CST	Tornado Warning	MRX	Bledsoe, Marion, Sequatchie	41 min
Mar 2, 2:59 PM CST	Severe Thunderstorm Warning	MRX	Loudon, McMinn, Monroe, Roane	46 min
Mar 2, 3:14 PM CST	Severe Thunderstorm Warning	MRX	Bledsoe, Meigs, Rhea	46 min
Mar 2, 3:24 PM CST	Tornado Warning	MRX	Marion, Sequatchie	51 min
Mar 2, 3:55 PM CST	Severe Thunderstorm Warning	MRX	Loudon, Roane	50 min
Mar 2, 4:24 PM CST	Severe Thunderstorm Warning	MRX	Scott	36 min
Mar 2, 4:29 PM CST	Severe Thunderstorm Warning	MRX	Marion	46 min
Mar 2, 4:29 PM CST	Tornado Warning	MRX	Anderson, Knox	31 min
Mar 2, 4:33 PM CST	Tornado Warning	MRX	Bledsoe, Hamilton, Meigs, Rhea	27 min
Mar 2, 4:38 PM CST	Tornado Warning	MRX	Scott	37 min
Mar 2, 4:57 PM CST	Severe Thunderstorm Warning	MRX	McMinn, Meigs, Rhea	18 min
Mar 2, 4:57 PM CST	Tornado Warning	MRX	Campbell, Claiborne, Scott	33 min
Mar 2, 5:03 PM CST	Severe Thunderstorm Warning	MRX	Hamilton, Marion	42 min
Mar 2, 5:15 PM CST	Severe Thunderstorm Warning	MRX	Loudon, McMinn, Monroe	45 min
Mar 2, 5:28 PM CST	Tornado Warning	MRX	Bradley, Hamilton	47 min
Mar 2, 5:30 PM CST	Tornado Warning	MRX	Blount, Loudon, McMinn, Monroe	45 min

Nearby

Tornado Warnings in Tennessee, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.