Alert archive / Alabama / Tornado Warnings in 2011
Tornado Warning 21, NWS Huntsville, AL
NWS Huntsville, AL issued this tornado warning at Mar 23, 2011, 8:23 PM CDT for Jackson County, Alabama. It was in force for 37 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, 8:23 PM CDT (01:23 UTC)
- Expired
- Mar 23, 2011, 9:00 PM CDT
- In force
- 37 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
County Jackson County, AL
The radar
The Northeast Alabama radar (KHTX), 31 km from the middle of the area, began a volume at 01:24 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
Nashville Metro, TN (KBNA), launched 00:00Z, 1.4 hours before the alert went out and 158 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
- 239 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 900 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
867
WFUS54 KHUN 240123
TORHUN
ALC071-240200-
/O.NEW.KHUN.TO.W.0021.110324T0123Z-110324T0200Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
823 PM CDT WED MAR 23 2011
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
* TORNADO WARNING FOR...
NORTHEASTERN JACKSON COUNTY IN NORTHEAST ALABAMA...
* UNTIL 900 PM CDT
* AT 823 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
JERICHO...OR ABOUT 13 MILES SOUTH OF WINCHESTER...MOVING EAST AT
40 MPH.
* LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE...
BASS.
STEVENSON.
BRIDGEPORT.
HIGDON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY 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 3481 8563 3478 8564 3476 8566 3495 8615
3500 8615 3500 8574 3498 8560 3487 8558
TIME...MOT...LOC 0123Z 289DEG 36KT 3499 8609
$$
KULA2 follow-up statements
903
WWUS54 KHUN 240137
SVSHUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
837 PM CDT WED MAR 23 2011
ALC071-240200-
/O.CON.KHUN.TO.W.0021.000000T0000Z-110324T0200Z/
JACKSON AL-
837 PM CDT WED MAR 23 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
NORTHEASTERN JACKSON COUNTY...
AT 837 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR BASS...OR ABOUT 15
MILES WEST OF BRIDGEPORT...MOVING SOUTHEAST AT 40 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RUSSELL
CAVE NATIONAL MONUMENT...STEVENSON...FABIUS...LONG ISLAND AND HIGDON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
&&
LAT...LON 3482 8563 3478 8564 3476 8566 3490 8601
3493 8602 3499 8598 3500 8572 3498 8560
3487 8558
TIME...MOT...LOC 0137Z 296DEG 34KT 3494 8597
$$
KULA627
WWUS54 KHUN 240156
SVSHUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
856 PM CDT WED MAR 23 2011
ALC071-240205-
/O.EXP.KHUN.TO.W.0021.000000T0000Z-110324T0200Z/
JACKSON AL-
856 PM CDT WED MAR 23 2011
...THE TORNADO WARNING FOR NORTHEASTERN JACKSON COUNTY EXPIRES AT 900
PM CDT...
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.
HEAVY RAIN...SMALL HAIL...GUSTY WINDS...AND FREQUENT LIGHTNING ARE
STILL POSSIBLE FROM THIS THUNDERSTORM. STAY INDOORS UNTIL THE STORM
HAS PASSED.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING
FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.
LAT...LON 3482 8563 3478 8564 3476 8566 3490 8601
3493 8602 3499 8598 3500 8572 3498 8560
3487 8558
TIME...MOT...LOC 0155Z 296DEG 34KT 3486 8579
$$
KULAThe 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, 8:27 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, 9:07 PM CDT | Tornado Warning | HUN | Limestone, Madison, Morgan | 23 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.