Alert archive / Tennessee / Tornado Warnings in 2011

Tornado Warning 12, NWS Huntsville, AL

February 28, 2011Lincoln County, Tennessee

NWS Huntsville, AL issued this tornado warning at Feb 28, 2011, 11:56 AM CST for Lincoln County, Tennessee. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Feb 28, 2011, 11:56 AM CST (17:56 UTC)
Expired
Feb 28, 2011, 12:21 PM CST
In force
25 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon

County Lincoln County, TN

The radar

The Northeast Alabama radar (KHTX), 59 km from the middle of the area, began a volume at 17:59 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 28, 5:59 AM CSTTornado WatchSPC7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 5.9 hours before the alert went out and 93 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 12:00Z on 2011-02-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 948 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2011-02-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 369 square meters per square second.1939587897117136Sfc1 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
948 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
795 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
369 m²/s²
0-3 km storm-relative helicity
404 m²/s²
Significant tornado parameter
2.6
Supercell composite
9.4

Open this sounding in Storm Lab

The text

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

716 
WFUS54 KHUN 281756
TORHUN
TNC103-281845-
/O.NEW.KHUN.TO.W.0012.110228T1756Z-110228T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1156 AM CST MON FEB 28 2011

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN LINCOLN COUNTY IN TENNESSEE...

* UNTIL 1245 PM CST

* AT 1156 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES NORTH OF
  BOONSHILL...OR ABOUT 11 MILES SOUTH OF LEWISBURG...MOVING EAST AT
  65 MPH.

* LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE...
  CHESTNUT RIDGE.
  BOONEVILLE.

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 TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM CST MONDAY AFTERNOON
FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.

&&

LAT...LON 3536 8652 3533 8653 3531 8650 3531 8645
      3526 8641 3525 8642 3524 8640 3520 8637
      3516 8683 3528 8681 3527 8674 3530 8671
      3535 8660 3538 8659
TIME...MOT...LOC 1756Z 255DEG 56KT 3530 8671

$$

70/DD
2 follow-up statements
572 
WWUS54 KHUN 281808
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1208 PM CST MON FEB 28 2011

TNC103-281845-
/O.CON.KHUN.TO.W.0012.000000T0000Z-110228T1845Z/
LINCOLN TN-
1208 PM CST MON FEB 28 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 PM CST FOR NORTH
CENTRAL LINCOLN COUNTY...

AT 1205 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR BELLEVILLE...OR
ABOUT 10 MILES NORTH OF FAYETTEVILLE...MOVING EAST AT 65 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BOONEVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM CST MONDAY AFTERNOON
FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.

&&

LAT...LON 3536 8652 3533 8653 3531 8650 3531 8645
      3530 8644 3526 8641 3525 8642 3520 8637
      3518 8659 3528 8661 3531 8663 3538 8659
TIME...MOT...LOC 1808Z 255DEG 56KT 3530 8649

$$
505 
WWUS54 KHUN 281821
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1221 PM CST MON FEB 28 2011

TNC103-281830-
/O.CAN.KHUN.TO.W.0012.000000T0000Z-110228T1845Z/
LINCOLN TN-
1221 PM CST MON FEB 28 2011

...THE TORNADO WARNING FOR NORTHERN LINCOLN COUNTY IS CANCELED...

WEATHER SERVICE DOPPLER RADAR INDICATED THE TORNADIC THUNDERSTORM
THAT PROMPTED THE WARNING HAD MOVED OUT OF THE COUNTY. THEREFORE THE
TORNADO WARNING HAS BEEN CANCELED.

HOWEVER...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN 
LINCOLN COUNTY UNTIL 100 PM CST.

LAT...LON 3536 8652 3533 8653 3531 8650 3531 8645
      3530 8644 3526 8641 3525 8642 3520 8637
      3518 8659 3528 8661 3531 8663 3538 8659
TIME...MOT...LOC 1820Z 255DEG 56KT 3533 8626

$$

The office that day

Everything else NWS Huntsville, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 28, 11:48 AM CSTSpecial Weather StatementHUNLincoln, Moore42 min
Feb 28, 12:07 PM CSTSevere Thunderstorm WarningHUNFranklin, Lincoln, Moore23 min
Feb 28, 12:12 PM CSTTornado Warning EmergencyHUNFranklin, Moore18 min
Feb 28, 12:19 PM CSTTornado WarningHUNFranklin, Lincoln28 min
Feb 28, 12:27 PM CSTTornado Warning EmergencyHUNFranklin, Moore18 min
Feb 28, 12:36 PM CSTSevere Thunderstorm WarningHUNFranklin24 min
Feb 28, 12:44 PM CSTTornado WarningHUNFranklin46 min
Feb 28, 12:45 PM CSTTornado WarningHUNFranklin15 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.