Alert archive / Tennessee / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 101, NWS Nashville, TN

March 31, 2012Giles County, Lawrence County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Mar 31, 2012, 3:41 PM CDT for Giles County, Lawrence County, Tennessee. It was in force for 49 min. 4 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 31, 2012, 3:41 PM CDT (20:41 UTC)
Expired: Mar 31, 2012, 4:30 PM CDT
In force: 49 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Giles County, TN, Lawrence County, TN

The radar

The Northeast Alabama radar (KHTX), 93 km from the middle of the area, began a volume at 20:41 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 31, 3:58 PM CDT	HAIL 1.75	8 S Pulaski, TN
Mar 31, 4:00 PM CDT	TSTM WND DMG	Pulaski, TN	SOME METAL BLOWN OFF ROOF BARNS AND SOME TREES WERE DOWNED ALONG WITH WINDOWS BROKEN IN SOME BUILDINGS ACROSS THE COUNTY.
Mar 31, 4:11 PM CDT	HAIL 2.75	8 S Pulaski, TN
Mar 31, 4:20 PM CDT	HAIL 2	Pulaski, TN

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 31, 12:47 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.7 hours before the alert went out and 115 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: 1321 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 509 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

411 
WUUS54 KOHX 312041
SVROHX
TNC055-099-312130-
/O.NEW.KOHX.SV.W.0101.120331T2041Z-120331T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
341 PM CDT SAT MAR 31 2012

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GILES COUNTY IN MIDDLE TENNESSEE...
  EAST CENTRAL LAWRENCE COUNTY IN MIDDLE TENNESSEE...

* UNTIL 430 PM CDT

* AT 337 PM CDT LOCAL LAW ENFORCEMENT REPORTED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO BASEBALL SIZE. THE
  STORM WAS NEAR PULASKI...MOVING SOUTHEAST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PULASKI...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS SEVERE THUNDERSTORM...WHICH
COULD FLOOD LOW LYING AREAS QUICKLY AND COVER ROADS WITH WATER. DO
NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3527 8728 3538 8711 3514 8682 3513 8683
      3499 8704 3499 8707
TIME...MOT...LOC 2041Z 322DEG 10KT 3525 8712

$$

FORECASTER: ROSE

1 follow-up statement

357 
WWUS54 KOHX 312125
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
425 PM CDT SAT MAR 31 2012

TNC055-099-312135-
/O.EXP.KOHX.SV.W.0101.000000T0000Z-120331T2130Z/
GILES TN-LAWRENCE TN-
425 PM CDT SAT MAR 31 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LAWRENCE AND
GILES COUNTIES WILL EXPIRE AT 430 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS THE WARNED 
AREA.

LAT...LON 3527 8728 3538 8711 3514 8682 3513 8683
      3499 8704 3499 8707
TIME...MOT...LOC 2125Z 322DEG 10KT 3515 8703

$$
31

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 1:04 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Rutherford	26 min
Mar 31, 1:15 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Marshall, Maury, Williamson	45 min
Mar 31, 1:25 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Rutherford	35 min
Mar 31, 1:55 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Coffee, Marshall, Maury, Rutherford	35 min
Mar 31, 2:01 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Marshall, Maury	29 min
Mar 31, 2:08 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Van Buren, White	17 min
Mar 31, 2:27 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Marshall, Maury	33 min
Mar 31, 2:29 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Coffee	16 min
Mar 31, 2:35 PM CDT	Severe Thunderstorm Warning	OHX	Marshall, Maury	25 min
Mar 31, 2:43 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Van Buren, White	17 min
Mar 31, 2:57 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Lawrence, Maury	48 min
Mar 31, 3:18 PM CDT	Flash Flood Warning	OHX	Giles	3 hr
Mar 31, 3:25 PM CDT	Special Weather Statement	OHX	Perry	35 min
Mar 31, 3:31 PM CDT	Severe Thunderstorm Warning	OHX	Perry, Wayne	29 min
Mar 31, 3:56 PM CDT	Tornado Warning	OHX	Giles	19 min
Mar 31, 3:58 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	32 min
Mar 31, 4:14 PM CDT	Tornado Warning	OHX	Giles	18 min
Mar 31, 4:23 PM CDT	Severe Thunderstorm Warning	OHX	Marshall, Maury	37 min
Mar 31, 4:28 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Lawrence	32 min
Mar 31, 4:35 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	25 min
Mar 31, 4:58 PM CDT	Severe Thunderstorm Warning	OHX	Marshall	32 min
Mar 31, 5:01 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	29 min
Mar 31, 5:12 PM CDT	Severe Thunderstorm Warning	OHX	Marshall	20 min
Mar 31, 5:19 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	26 min
Mar 31, 5:46 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	14 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2012 Every severe thunderstorm warning 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.