Alert archive / Tennessee / Tornado Warnings in 2011
Tornado Warning 17, NWS Huntsville, AL
NWS Huntsville, AL issued this tornado warning at Feb 28, 2011, 12:45 PM CST for Franklin County, Tennessee. It was in force for 15 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, 12:45 PM CST (18:45 UTC)
- Expired
- Feb 28, 2011, 1:00 PM CST
- In force
- 15 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
County Franklin County, TN
The radar
The Northeast Alabama radar (KHTX), 32 km from the middle of the area, began a volume at 18:46 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 28, 12:29 PM CST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 6.8 hours before the alert went out and 122 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
998
WFUS54 KHUN 281845
TORHUN
TNC051-281900-
/O.NEW.KHUN.TO.W.0017.110228T1845Z-110228T1900Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1245 PM CST MON FEB 28 2011
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
* TORNADO WARNING FOR...
EAST CENTRAL FRANKLIN COUNTY IN TENNESSEE...
* UNTIL 100 PM CST
* AT 1240 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
COWAN...OR ABOUT 7 MILES SOUTHEAST OF WINCHESTER...MOVING EAST
AT 45 MPH. DAMAGING STRAIGHT LINE WINDS IN EXCESS OF 80 MPH
ARE ALSO LIKELY.
* LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE...
ST. ANDREWS.
COWAN.
SEWANEE.
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 700 PM CST MONDAY EVENING FOR
NORTHERN ALABAMA AND CENTRAL TENNESSEE.
&&
LAT...LON 3523 8588 3523 8587 3523 8586 3504 8587
3505 8608 3524 8606 3523 8589
TIME...MOT...LOC 1845Z 271DEG 38KT 3514 8593
$$2 follow-up statements
516
WWUS54 KHUN 281856
SVSHUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1256 PM CST MON FEB 28 2011
TNC051-281900-
/O.CON.KHUN.TO.W.0017.000000T0000Z-110228T1900Z/
FRANKLIN TN-
1256 PM CST MON FEB 28 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 100 PM CST FOR EAST
CENTRAL FRANKLIN COUNTY...
AT 1250 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR SHERWOOD...OR
ABOUT 12 MILES EAST OF WINCHESTER...MOVING EAST AT 45 MPH. STRAIGHT
LINE WINDS IN EXCESS OF 70 MPH ARE ALSO LIKELY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.
&&
LAT...LON 3523 8588 3523 8587 3523 8586 3504 8587
3505 8608 3524 8606 3523 8589
TIME...MOT...LOC 1855Z 273DEG 36KT 3513 8584
$$701
WWUS54 KHUN 281901
SVSHUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
101 PM CST MON FEB 28 2011
TNC051-281911-
/O.EXP.KHUN.TO.W.0017.000000T0000Z-110228T1900Z/
FRANKLIN TN-
101 PM CST MON FEB 28 2011
...THE TORNADO WARNING FOR EAST CENTRAL FRANKLIN COUNTY EXPIRES AT
100 PM CST...
WEATHER SERVICE DOPPLER RADAR INDICATED THE SEVERE THUNDERSTORM THAT
PROMPTED THE WARNING HAD MOVED OUT OF THE COUNTY. THEREFORE THE
SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE. MULTIPLE
REPORTS OF WIND DAMAGE HAVE BEEN RECEIVED ACROSS CENTRAL FRANKLIN
COUNTY OVER THE PAST HOUR.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CST MONDAY EVENING FOR
NORTHERN ALABAMA AND CENTRAL TENNESSEE.
LAT...LON 3523 8588 3523 8587 3523 8586 3504 8587
3505 8608 3524 8606 3523 8589
TIME...MOT...LOC 1856Z 273DEG 36KT 3512 8583
$$The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 11:48 AM CST | Special Weather Statement | HUN | Lincoln, Moore | 42 min |
| Feb 28, 11:56 AM CST | Tornado Warning | HUN | Lincoln | 25 min |
| Feb 28, 12:07 PM CST | Severe Thunderstorm Warning | HUN | Franklin, Lincoln, Moore | 23 min |
| Feb 28, 12:12 PM CST | Tornado Warning | HUN | Franklin, Moore | 18 min |
| Feb 28, 12:19 PM CST | Tornado Warning | HUN | Franklin, Lincoln | 28 min |
| Feb 28, 12:27 PM CST | Tornado Warning | HUN | Franklin, Moore | 18 min |
| Feb 28, 12:36 PM CST | Severe Thunderstorm Warning | HUN | Franklin | 24 min |
| Feb 28, 12:44 PM CST | Tornado Warning | HUN | Franklin | 46 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.