Alert archive / Tennessee / Tornado Warnings in 2011

Tornado Warning 19, NWS Memphis, TN

February 28, 2011Decatur County, Henderson County, Tennessee

NWS Memphis, TN issued this tornado warning at Feb 28, 2011, 6:35 AM CST for Decatur County, Henderson County, Tennessee. It was in force for 25 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 28, 2011, 6:35 AM CST (12:35 UTC)
Expired: Feb 28, 2011, 7:00 AM CST
In force: 25 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon

Counties Decatur County, TN, Henderson County, TN

What was reported inside it

Time	Report	Where	Remark
Feb 28, 6:55 AM CST	HAIL 0.75	Decaturville, 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
Feb 28, 1:33 AM CST	Tornado Watch	SPC	7 hr
Feb 28, 5:59 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 0.6 hours before the alert went out and 150 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: 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.

250 
WFUS54 KMEG 281235
TORMEG
TNC039-077-281300-
/O.NEW.KMEG.TO.W.0019.110228T1235Z-110228T1300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
635 AM CST MON FEB 28 2011

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL DECATUR COUNTY IN TENNESSEE...
  SOUTHEASTERN HENDERSON COUNTY IN SOUTHWEST TENNESSEE...

* UNTIL 700 AM CST

* AT 635 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM PRODUCING A TORNADO NEAR SARDIS...OR 13 MILES
  SOUTH OF LEXINGTON...MOVING EAST AT 50 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DARDEN...
  DECATURVILLE...PARSONS...REAGAN AND SARDIS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STORM SHELTER. IF NO
STORM SHELTER 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.

&&

LAT...LON 3549 8797 3547 8802 3545 8804 3542 8827
      3543 8836 3558 8836 3573 8802 3567 8801
      3561 8802 3553 8796
TIME...MOT...LOC 1235Z 249DEG 44KT 3548 8829

$$
BORGHOFF

2 follow-up statements

541 
WWUS54 KMEG 281250
SVSMEG

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
650 AM CST MON FEB 28 2011

TNC077-281300-
/O.CAN.KMEG.TO.W.0019.000000T0000Z-110228T1300Z/
HENDERSON TN-
650 AM CST MON FEB 28 2011

...THE TORNADO WARNING FOR SOUTHEASTERN HENDERSON COUNTY IS
CANCELLED...

AT 650 AM CST...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. 
THEREFORE...THE TORNADO WARNING IS CANCELLED.

LAT...LON 3550 8797 3548 8816 3556 8821 3570 8809
      3573 8802 3568 8801 3561 8802 3553 8796
TIME...MOT...LOC 1250Z 247DEG 45KT 3556 8807

$$

TNC039-281300-
/O.CON.KMEG.TO.W.0019.000000T0000Z-110228T1300Z/
DECATUR TN-
650 AM CST MON FEB 28 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 AM CST FOR CENTRAL
DECATUR COUNTY...

AT 650 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR HANEY...OR 16
MILES SOUTHEAST OF NATCHEZ TRACE STATE FOREST...MOVING NORTHEAST AT
50 MPH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
DECATURVILLE...PARSONS...BUSSELTOWN...PERRYVILLE...MOUNT TABOR...
GARRETT...MOUNT LEBANON...GUMDALE...LARGO AND HANEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STORM SHELTER. IF NO
STORM SHELTER 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.

&&

LAT...LON 3550 8797 3548 8816 3556 8821 3570 8809
      3573 8802 3568 8801 3561 8802 3553 8796
TIME...MOT...LOC 1250Z 247DEG 45KT 3556 8807

$$
BORGHOFF

717 
WWUS54 KMEG 281259
SVSMEG

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
659 AM CST MON FEB 28 2011

TNC039-281310-
/O.EXP.KMEG.TO.W.0019.000000T0000Z-110228T1300Z/
DECATUR TN-
659 AM CST MON FEB 28 2011

...THE TORNADO WARNING FOR CENTRAL DECATUR COUNTY HAS EXPIRED...

AT 700 AM CST...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE...THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 3550 8797 3548 8816 3556 8821 3570 8809
      3573 8802 3568 8801 3561 8802 3553 8796
TIME...MOT...LOC 1300Z 247DEG 45KT 3561 8793

$$
BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 27, 10:47 PM CST	Wind Advisory	MEG	Dyer, Lake, Lauderdale, Obion, Shelby, Tipton	7 hr
Feb 28, 5:29 AM CST	Flash Flood Warning	MEG	Carroll, Gibson	3 hr
Feb 28, 6:53 AM CST	Special Weather Statement	MEG	Shelby	37 min
Feb 28, 7:08 AM CST	Special Weather Statement	MEG	Shelby, Tipton	22 min
Feb 28, 8:31 AM CST	Flash Flood Warning	MEG	Carroll, Gibson	117 min
Feb 28, 12:06 PM CST	Wind Advisory	MEG	Carroll, Chester, Crockett, Decatur, Dyer, Fayette and 14 more	4 hr

Nearby

Tornado Warnings in Tennessee, 2011 Every tornado warning in 2011 Tornadoes 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.