Alert archive / Alabama / Tornado Warnings in 2011
Tornado Warning 22, NWS Huntsville, AL
NWS Huntsville, AL issued this tornado warning at Mar 23, 2011, 9:07 PM CDT for Limestone County, Madison County, Morgan County, Alabama. It was in force for 23 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
- Mar 23, 2011, 9:07 PM CDT (02:07 UTC)
- Expired
- Mar 23, 2011, 9:30 PM CDT
- In force
- 23 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
Counties Limestone County, AL, Madison County, AL, Morgan County, AL
The radar
The Northeast Alabama radar (KHTX), 72 km from the middle of the area, began a volume at 02:06 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 |
|---|---|---|---|
| Mar 23, 4:06 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 00:00Z, 2.1 hours before the alert went out and 154 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1942 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 281 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
993
WFUS54 KHUN 240207
TORHUN
ALC083-089-103-240230-
/O.NEW.KHUN.TO.W.0022.110324T0207Z-110324T0230Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
907 PM CDT WED MAR 23 2011
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN LIMESTONE COUNTY IN NORTH CENTRAL ALABAMA...
CENTRAL MADISON COUNTY IN NORTH CENTRAL ALABAMA...
NORTHEASTERN MORGAN COUNTY IN NORTH CENTRAL ALABAMA...
* UNTIL 930 PM CDT
* AT 905 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
MOORESVILLE...OR ABOUT 6 MILES EAST OF DECATUR...MOVING EAST AT 45
MPH.
* LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE...
MOORESVILLE.
TRIANA.
WHITESBURG.
LACEYS SPRING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. 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.
&&
LAT...LON 3460 8653 3444 8661 3448 8683 3457 8699
3471 8691
TIME...MOT...LOC 0207Z 286DEG 40KT 3462 8686
$$2 follow-up statements
169
WWUS54 KHUN 240217
SVSHUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
917 PM CDT WED MAR 23 2011
ALC083-240228-
/O.CAN.KHUN.TO.W.0022.000000T0000Z-110324T0230Z/
LIMESTONE AL-
917 PM CDT WED MAR 23 2011
...THE TORNADO WARNING FOR SOUTHEASTERN LIMESTONE COUNTY IS
CANCELED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING
FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.
LAT...LON 3451 8681 3456 8681 3456 8679 3462 8679
3467 8678 3460 8653 3459 8653 3445 8661
TIME...MOT...LOC 0218Z 286DEG 40KT 3459 8674
$$
ALC089-103-240230-
/O.CON.KHUN.TO.W.0022.000000T0000Z-110324T0230Z/
MORGAN AL-MADISON AL-
917 PM CDT WED MAR 23 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR CENTRAL
MADISON AND EAST CENTRAL MORGAN COUNTIES...
AT 915 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR TRIANA...OR ABOUT
7 MILES SOUTH OF MADISON...MOVING EAST AT 45 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
VALHERMOSO SPRINGS...LACEYS SPRING...WHITESBURG AND FARLEY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING
FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.
&&
LAT...LON 3451 8681 3456 8681 3456 8679 3462 8679
3467 8678 3460 8653 3459 8653 3445 8661
TIME...MOT...LOC 0218Z 286DEG 40KT 3459 8674
$$971
WWUS54 KHUN 240229
SVSHUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
929 PM CDT WED MAR 23 2011
ALC089-103-240239-
/O.EXP.KHUN.TO.W.0022.000000T0000Z-110324T0230Z/
MORGAN AL-MADISON AL-
929 PM CDT WED MAR 23 2011
...THE TORNADO WARNING FOR CENTRAL MADISON AND EAST CENTRAL MORGAN
COUNTIES EXPIRES AT 930 PM CDT...
WEATHER SERVICE DOPPLER RADAR INDICATES THE THUNDERSTORM THAT
PROMPTED THE TORNADO WARNING HAS WEAKENED AND IS NO LONGER SEVERE.
THEREFORE THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING
FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.
LAT...LON 3451 8681 3456 8681 3456 8679 3462 8679
3467 8678 3460 8653 3459 8653 3445 8661
TIME...MOT...LOC 0229Z 286DEG 40KT 3456 8660
$$The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 7:42 PM CDT | Severe Thunderstorm Warning | HUN | Lauderdale | 33 min |
| Mar 23, 7:48 PM CDT | Special Weather Statement | HUN | Lauderdale | 42 min |
| Mar 23, 8:00 PM CDT | Severe Thunderstorm Warning | HUN | Madison | 30 min |
| Mar 23, 8:02 PM CDT | Severe Thunderstorm Warning | HUN | Limestone | 28 min |
| Mar 23, 8:04 PM CDT | Severe Thunderstorm Warning | HUN | Jackson | 41 min |
| Mar 23, 8:23 PM CDT | Tornado Warning | HUN | Jackson | 37 min |
| Mar 23, 8:27 PM CDT | Special Weather Statement | HUN | Madison | 33 min |
| Mar 23, 8:43 PM CDT | Severe Thunderstorm Warning | HUN | Lawrence, Limestone, Morgan | 32 min |
| Mar 23, 8:44 PM CDT | Special Weather Statement | HUN | Madison | 31 min |
| Mar 23, 9:17 PM CDT | Special Weather Statement | HUN | Jackson | 43 min |
| Mar 23, 9:21 PM CDT | Special Weather Statement | HUN | DeKalb | 39 min |
| Mar 23, 9:23 PM CDT | Special Weather Statement | HUN | DeKalb | 37 min |
| Mar 23, 9:43 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb, Jackson | 32 min |
| Mar 23, 9:55 PM CDT | Special Weather Statement | HUN | Madison | 35 min |
Nearby
Tornado Warnings in Alabama, 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.