Alert archive / Tennessee / Tornado Warnings in 2012

Tornado Warning 42, NWS Nashville, TN

March 2, 20124 counties in Tennessee

NWS Nashville, TN issued this tornado warning at Mar 2, 2012, 6:21 PM CST for 4 counties in Tennessee. It was in force for 24 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: Mar 2, 2012, 6:21 PM CST (00:21 UTC)
Expired: Mar 2, 2012, 6:45 PM CST
In force: 24 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Bedford County, TN, Giles County, TN, Marshall County, TN, Maury County, TN

The radar

The Northeast Alabama radar (KHTX), 68 km from the middle of the area, began a volume at 00:23 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, 6:29 PM CST	HAIL 1	2 W Lewisburg, TN	AMATEUR RADIO OPERATOR REPORTS QUARTER SIZE HAIL BETWEEN LEWISBURG AND INTERSTATE 65.
Mar 2, 6:45 PM CST	HAIL 1.75	8 Sw Shelbyville, TN	GOLFBALL HAIL REPORTED BETWEEN THE COMMUNITIES OF PLEASANT GROVE AND RICHMOND, 8 MILES SOUTHWEST OF SHELBYVILLE.

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, 1:20 PM CST	Tornado Watch	SPC	9 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 0.4 hours before the alert went out and 82 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: 262 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 1382 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 150 m²/s²
0-3 km storm-relative helicity: 188 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

563 
WFUS54 KOHX 030021
TOROHX
TNC003-055-117-119-030045-
/O.NEW.KOHX.TO.W.0042.120303T0021Z-120303T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
621 PM CST FRI MAR 2 2012

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  BEDFORD COUNTY IN MIDDLE TENNESSEE...
  NORTHEASTERN GILES COUNTY IN MIDDLE TENNESSEE...
  MARSHALL COUNTY IN MIDDLE TENNESSEE...
  SOUTHEASTERN MAURY COUNTY IN MIDDLE TENNESSEE...

* UNTIL 645 PM CST

* AT 619 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 10 MILES SOUTHWEST OF LEWISBURG...AND MOVING EAST
  AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LEWISBURG...SHELBYVILLE...CORNERSVILLE...PETERSBURG...WARTRACE AND
  BELL BUCKLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3526 8698 3550 8704 3563 8642 3562 8640
      3564 8635 3541 8628 3536 8633 3534 8640
      3532 8642 3533 8647 3536 8649 3537 8659
      3532 8660 3531 8667 3528 8671
TIME...MOT...LOC 0021Z 258DEG 43KT 3537 8689

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 2, 6:05 PM CST	Severe Thunderstorm Warning	OHX	Lawrence, Wayne	25 min
Mar 2, 6:08 PM CST	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee	37 min
Mar 2, 6:15 PM CST	Tornado Warning	OHX	Coffee, Warren	30 min
Mar 2, 6:24 PM CST	Tornado Warning	OHX	Giles, Lawrence, Wayne	18 min
Mar 2, 6:36 PM CST	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, DeKalb, Rutherford, Warren	24 min
Mar 2, 6:36 PM CST	Tornado Warning	OHX	Bedford, Marshall	24 min
Mar 2, 6:41 PM CST	Tornado Warning	OHX	Van Buren, Warren	34 min
Mar 2, 6:56 PM CST	Severe Thunderstorm Warning	OHX	Van Buren, White	34 min
Mar 2, 6:57 PM CST	Severe Thunderstorm Warning	OHX	Bedford, Coffee	33 min
Mar 2, 7:09 PM CST	Tornado Warning	OHX	Van Buren	21 min
Mar 2, 7:15 PM CST	Severe Thunderstorm Warning	OHX	Cumberland	30 min
Mar 2, 7:22 PM CST	Tornado Warning	OHX	Cumberland	38 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.