Alert archive / Tennessee / Tornado Warnings in 2011

Tornado Warning 15, NWS Huntsville, AL

February 28, 2011Franklin County, Moore County, Tennessee

NWS Huntsville, AL issued this tornado warning at Feb 28, 2011, 12:27 PM CST for Franklin County, Moore County, Tennessee. It was in force for 18 min. 3 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
Feb 28, 2011, 12:27 PM CST (18:27 UTC)
Expired
Feb 28, 2011, 12:45 PM CST
In force
18 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Emergency
Tornado emergency

Counties Franklin County, TN, Moore County, TN

The radar

The Northeast Alabama radar (KHTX), 45 km from the middle of the area, began a volume at 18:29 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

TimeReportWhereRemark
Feb 28, 12:35 PM CSTTORNADO5 S Tullahoma, TNSTRUCTURAL DAMAGE TO PART OF CAR LOT AND HOUSE NEAR HWY 130. POSSIBLE TORNADO.
Feb 28, 12:35 PM CSTTORNADOEstill Springs, TNEXTENSIVE STRUCTURAL DAMAGE TO RESIDENCES AND MULTIPLE TREES DOWN ACROSS AREAS NEAR PLEASANT GROVE RD...TURKEY CREED RD...AWALT RD...AND HWY 41A. POSSIBLE TORNADO.
Feb 28, 12:46 PM CSTTORNADO5 E Lynchburg, TNSTRUCTURAL DAMAGE TO HOME NEAR PLEASANT GROVE RD.

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.

IssuedProductOfficeLasted
Feb 28, 5:59 AM CSTTornado WatchSPC7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 6.5 hours before the alert went out and 97 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.

962 
WFUS54 KHUN 281827
TORHUN
TNC051-127-281845-
/O.NEW.KHUN.TO.W.0015.110228T1827Z-110228T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1227 PM CST MON FEB 28 2011

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN FRANKLIN COUNTY IN TENNESSEE...
  EASTERN MOORE COUNTY IN TENNESSEE...

* UNTIL 1245 PM CST

* AT 1225 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR OAK        
  GROVE...OR ABOUT 8 MILES EAST OF LYNCHBURG...MOVING EAST AT 50     
  MPH. THIS IS A TORNADO EMERGENCY!! 

* LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE...
  WOODS RESERVOIR.
  ALTO.
  ESTILL SPRINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. THIS
STORM IS CAPABLE OF PRODUCING STRONG TO VIOLENT TORNADOES. IF YOU ARE
IN THE PATH OF THIS TORNADO...TAKE COVER IMMEDIATELY!

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

&&

LAT...LON 3538 8624 3538 8627 3535 8620 3537 8616
      3536 8604 3530 8592 3526 8589 3524 8589
      3521 8632 3523 8632 3526 8635 3535 8635
      3534 8637 3540 8630 3540 8625
TIME...MOT...LOC 1827Z 259DEG 43KT 3532 8618

$$
1 follow-up statement
581 
WWUS54 KHUN 281832
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1232 PM CST MON FEB 28 2011

TNC127-281842-
/O.CAN.KHUN.TO.W.0015.000000T0000Z-110228T1845Z/
MOORE TN-
1232 PM CST MON FEB 28 2011

...THE TORNADO WARNING FOR EASTERN MOORE COUNTY IS CANCELED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CST MONDAY EVENING FOR
NORTHERN ALABAMA AND CENTRAL TENNESSEE.

LAT...LON 3524 8589 3524 8618 3532 8618 3533 8619
      3535 8617 3536 8616 3536 8604 3530 8592
      3526 8589
TIME...MOT...LOC 1832Z 265DEG 39KT 3531 8612

$$

TNC051-281845-
/O.CON.KHUN.TO.W.0015.000000T0000Z-110228T1845Z/
FRANKLIN TN-
1232 PM CST MON FEB 28 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 PM CST FOR
NORTHEASTERN FRANKLIN COUNTY...

AT 1230 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A POTENTIALLY DESTRUCTIVE TORNADO.  THIS TORNADO WAS 
LOCATED NEAR ESTILL SPRINGS...OR ABOUT 9 MILES NORTH OF 
WINCHESTER...MOVING EAST AT 55 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WOODS
RESERVOIR AND ALTO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. THIS
STORM IS CAPABLE OF PRODUCING STRONG TO VIOLENT TORNADOES. IF YOU ARE
IN THE PATH OF THIS TORNADO...TAKE COVER IMMEDIATELY!

&&

LAT...LON 3524 8589 3524 8618 3532 8618 3533 8619
      3535 8617 3536 8616 3536 8604 3530 8592
      3526 8589
TIME...MOT...LOC 1832Z 265DEG 39KT 3531 8612

$$

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, 11:56 AM CSTTornado WarningHUNLincoln25 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, 12:36 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.