Alert archive / Alabama / Tornado Warnings in 2011
Tornado Warning 149, NWS Birmingham, AL
NWS Birmingham, AL issued this tornado warning at Sep 5, 2011, 12:35 PM CDT for Chilton County, Dallas County, Perry County, Alabama. It was in force for 25 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
- Sep 5, 2011, 12:35 PM CDT (17:35 UTC)
- Expired
- Sep 5, 2011, 1:00 PM CDT
- In force
- 25 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
Counties Chilton County, AL, Dallas County, AL, Perry County, AL
The radar
The Birmingham radar (KBMX), 56 km from the middle of the area, began a volume at 17:36 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 |
|---|---|---|---|
| Sep 5, 5:35 AM CDT | Tornado Watch | SPC | 10 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 5.6 hours before the alert went out and 57 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
- 371 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 471 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 238 m²/s²
- 0-3 km storm-relative helicity
- 277 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.7
The text
As transmitted, in the capitals the NWS used until 2016.
704 WFUS54 KBMX 051735 TORBMX ALC021-047-105-051800- /O.NEW.KBMX.TO.W.0149.110905T1735Z-110905T1800Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 1235 PM CDT MON SEP 5 2011 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * TORNADO WARNING FOR... SOUTHWESTERN CHILTON COUNTY IN ALABAMA... NORTH CENTRAL DALLAS COUNTY IN SOUTH CENTRAL ALABAMA... NORTHEASTERN PERRY COUNTY IN ALABAMA... * UNTIL 100 PM CDT * AT 1232 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 5 MILES WEST OF PAUL M GRIST STATE PARK...OR 8 MILES NORTHWEST OF VALLEY GRANDE...AND MOVING NORTH AT 45 MPH. * LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF EXTREME NORTHERN DALLAS...EXTREME WESTERN CHILTON AND NORTHEASTERN PERRY COUNTIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. && TO REPORT SEVERE WEATHER... CALL 1-800-856-0758. LAT...LON 3283 8708 3283 8693 3256 8704 3259 8718 TIME...MOT...LOC 1735Z 197DEG 38KT 3263 8707 $$
1 follow-up statement
175
WWUS54 KBMX 051746
SVSBMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1246 PM CDT MON SEP 5 2011
ALC047-051755-
/O.CAN.KBMX.TO.W.0149.000000T0000Z-110905T1800Z/
DALLAS AL-
1246 PM CDT MON SEP 5 2011
...THE TORNADO WARNING FOR NORTH CENTRAL DALLAS COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
COUNTY.
TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.
LAT...LON 3268 8710 3283 8708 3283 8693 3271 8701
3272 8702 3270 8703 3267 8703 3265 8705
TIME...MOT...LOC 1745Z 197DEG 38KT 3273 8703
$$
ALC021-105-051800-
/O.CON.KBMX.TO.W.0149.000000T0000Z-110905T1800Z/
CHILTON AL-PERRY AL-
1246 PM CDT MON SEP 5 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN PERRY AND
WEST CENTRAL CHILTON COUNTIES UNTIL 100 PM CDT...
AT 1241 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 7 MILES NORTHWEST OF PAUL M GRIST STATE PARK...OR
12 MILES NORTH OF VALLEY GRANDE...MOVING NORTH AT 45 MPH.
LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF EXTREME NORTHEASTERN PERRY AND EXTREME
WESTERN CHILTON COUNTIES.
TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.
LAT...LON 3268 8710 3283 8708 3283 8693 3271 8701
3272 8702 3270 8703 3267 8703 3265 8705
TIME...MOT...LOC 1745Z 197DEG 38KT 3273 8703
$$The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 4:31 AM CDT | Wind Advisory | BMX | Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more | 26 hr |
| Sep 5, 5:34 AM CDT | Areal Flood Advisory | BMX | Montgomery | 3 hr |
| Sep 5, 5:54 AM CDT | Flash Flood Warning | BMX | Elmore, Montgomery | 2 hr |
| Sep 5, 6:19 AM CDT | Flash Flood Warning | BMX | Pickens | 7 hr |
| Sep 5, 6:20 AM CDT | Tornado Warning | BMX | Pickens | 24 min |
| Sep 5, 6:44 AM CDT | Flash Flood Warning | BMX | Lamar | 4 hr |
| Sep 5, 6:57 AM CDT | Flash Flood Warning | BMX | Lamar | 7 hr |
| Sep 5, 7:16 AM CDT | Flash Flood Warning | BMX | Fayette, Marion, Walker, Winston | 8 hr |
| Sep 5, 8:27 AM CDT | Flash Flood Warning | BMX | Sumter | 4 hr |
| Sep 5, 9:01 AM CDT | Areal Flood Warning | BMX | Lamar | 60 hr |
| Sep 5, 9:29 AM CDT | River Flood Warning | BMX | Greene, Hale, Marengo, Sumter | 48 hr |
| Sep 5, 9:40 AM CDT | Flash Flood Warning | BMX | Pickens | 6 hr |
| Sep 5, 10:07 AM CDT | River Flood Warning | BMX | Jefferson, Tuscaloosa, Walker | 72 hr |
| Sep 5, 10:07 AM CDT | River Flood Warning | BMX | Greene, Hale, Marengo, Sumter, Tuscaloosa | 59 hr |
| Sep 5, 10:07 AM CDT | River Flood Warning | BMX | Greene, Hale, Marengo | 5 days |
| Sep 5, 10:14 AM CDT | Tornado Warning | BMX | Bullock, Pike | 13 min |
| Sep 5, 10:16 AM CDT | Flash Flood Warning | BMX | Greene | 6 hr |
| Sep 5, 10:28 AM CDT | Flash Flood Warning | BMX | Lamar | 4 hr |
| Sep 5, 10:31 AM CDT | Tornado Warning | BMX | Lee, Macon, Russell | 29 min |
| Sep 5, 10:48 AM CDT | Tornado Warning | BMX | Bibb, Hale, Perry | 27 min |
| Sep 5, 10:51 AM CDT | Tornado Warning | BMX | Lee | 24 min |
| Sep 5, 11:11 AM CDT | Tornado Warning | BMX | Chambers | 34 min |
| Sep 5, 11:36 AM CDT | Flash Flood Warning | BMX | Tuscaloosa | 7 hr |
| Sep 5, 11:39 AM CDT | Tornado Warning | BMX | Perry | 36 min |
| Sep 5, 12:20 PM CDT | Tornado Warning | BMX | Dallas | 25 min |
| Sep 5, 12:21 PM CDT | Tornado Warning | BMX | Bullock, Pike | 24 min |
| Sep 5, 12:40 PM CDT | Areal Flood Warning | BMX | Pickens | 3 hr |
| Sep 5, 1:00 PM CDT | Tornado Warning | BMX | Lee, Russell | 30 min |
| Sep 5, 1:09 PM CDT | Flash Flood Warning | BMX | Jefferson | 6 hr |
| Sep 5, 1:27 PM CDT | Areal Flood Warning | BMX | Pickens | 3 hr |
| Sep 5, 1:47 PM CDT | Areal Flood Warning | BMX | Pickens | 3 hr |
| Sep 5, 2:27 PM CDT | Severe Thunderstorm Warning | BMX | Jefferson | 48 min |
| Sep 5, 2:28 PM CDT | Flash Flood Warning | BMX | Blount, Jefferson | 4 hr |
| Sep 5, 3:01 PM CDT | Areal Flood Warning | BMX | Fayette, Marion, Walker, Winston | 17 hr |
| Sep 5, 3:03 PM CDT | Tornado Warning | BMX | Lee, Macon | 27 min |
| Sep 5, 3:26 PM CDT | River Flood Warning | BMX | Jefferson | 15 hr |
| Sep 5, 4:06 PM CDT | Areal Flood Warning | BMX | Pickens | 16 hr |
| Sep 5, 4:39 PM CDT | Flash Flood Warning | BMX | Jefferson | 5 hr |
| Sep 5, 4:52 PM CDT | Flash Flood Warning | BMX | Bibb, Shelby | 3 hr |
| Sep 5, 5:08 PM CDT | Special Weather Statement | BMX | Blount, Jefferson | 67 min |
| Sep 5, 5:12 PM CDT | Flash Flood Warning | BMX | Etowah, St. Clair | 6 hr |
| Sep 5, 6:12 PM CDT | Special Weather Statement | BMX | Blount, Jefferson | 78 min |
| Sep 5, 6:18 PM CDT | Areal Flood Warning | BMX | Tuscaloosa | 6 hr |
| Sep 5, 6:38 PM CDT | Flash Flood Warning | BMX | Blount | 3 hr |
| Sep 5, 6:41 PM CDT | High Wind Warning | BMX | Blount, Calhoun, Cherokee, Clay, Cleburne, Etowah and 5 more | 3 hr |
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.