Alert archive / Alabama / Tornado Warnings in 2021
Tornado Warning 40, NWS Birmingham, AL
NWS Birmingham, AL issued this tornado warning at Mar 17, 2021, 7:18 PM CDT for Autauga County, Dallas County, Alabama. It was in force for 17 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 17, 2021, 7:18 PM CDT (00:18 UTC)
- Expired
- Mar 17, 2021, 7:35 PM CDT
- In force
- 17 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Autauga County, AL, Dallas County, AL
The radar
The Birmingham radar (KBMX), 66 km from the middle of the area, began a volume at 00:22 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 17, 6:48 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 00:00Z, 0.3 hours before the alert went out and 66 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
- 188 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 669 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 336 m²/s²
- 0-3 km storm-relative helicity
- 465 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted.
049
WFUS54 KBMX 180018
TORBMX
ALC001-047-180115-
/O.NEW.KBMX.TO.W.0040.210318T0018Z-210318T0115Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
718 PM CDT Wed Mar 17 2021
The National Weather Service in Birmingham has issued a
* Tornado Warning for...
Northwestern Autauga County in central Alabama...
East central Dallas County in south central Alabama...
* Until 815 PM CDT.
* At 718 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Selma, moving northeast at 30 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Billingsley, Gardner Island, Burnsville, Vida Junction and Dawson
Mill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3247 8702 3266 8687 3266 8672 3271 8671
3271 8649 3240 8690
TIME...MOT...LOC 0018Z 225DEG 26KT 3245 8697
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
17/KLAWS2 follow-up statements
179
WWUS54 KBMX 180033
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
733 PM CDT Wed Mar 17 2021
ALC047-180042-
/O.CAN.KBMX.TO.W.0040.000000T0000Z-210318T0115Z/
Dallas AL-
733 PM CDT Wed Mar 17 2021
...THE TORNADO WARNING FOR EAST CENTRAL DALLAS COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 300 AM CDT for central and
south central Alabama.
LAT...LON 3246 8686 3248 8689 3249 8688 3252 8690
3266 8677 3266 8671 3271 8671 3271 8649
3244 8685 3244 8687
TIME...MOT...LOC 0032Z 233DEG 31KT 3250 8682
$$
ALC001-180115-
/O.CON.KBMX.TO.W.0040.000000T0000Z-210318T0115Z/
Autauga AL-
733 PM CDT Wed Mar 17 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
NORTHWESTERN AUTAUGA COUNTY...
At 732 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Mulberry, or 9 miles east of Valley Grande, moving
northeast at 35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Billingsley, Vida Junction and Dawson Mill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3246 8686 3248 8689 3249 8688 3252 8690
3266 8677 3266 8671 3271 8671 3271 8649
3244 8685 3244 8687
TIME...MOT...LOC 0032Z 233DEG 31KT 3250 8682
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
17/KLAWS117
WWUS54 KBMX 180035
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
735 PM CDT Wed Mar 17 2021
ALC001-180045-
/O.CAN.KBMX.TO.W.0040.000000T0000Z-210318T0115Z/
Autauga AL-
735 PM CDT Wed Mar 17 2021
...THE TORNADO WARNING FOR NORTHWESTERN AUTAUGA COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 300 AM CDT for central and
south central Alabama.
LAT...LON 3246 8686 3248 8689 3249 8688 3252 8690
3266 8677 3266 8671 3271 8671 3271 8649
3244 8685 3244 8687
TIME...MOT...LOC 0034Z 225DEG 26KT 3252 8680
$$
17/KLAWSThe office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 7:47 PM CDT | Severe Thunderstorm Warning | BMX | Fayette, Lamar, Marion | 58 min |
| Mar 17, 8:01 PM CDT | Tornado Warning | BMX | Greene, Pickens, Sumter | 22 min |
| Mar 17, 8:15 PM CDT | Severe Thunderstorm Warning | BMX | Autauga | 39 min |
| Mar 17, 8:32 PM CDT | Tornado Warning | BMX | Autauga, Chilton, Elmore | 19 min |
| Mar 17, 9:06 PM CDT | River Flood Warning | BMX | Greene, Hale, Marengo, Tuscaloosa | 33 hr |
| Mar 17, 9:14 PM CDT | River Flood Warning | BMX | Sumter | 37 hr |
| Mar 17, 9:18 PM CDT | River Flood Warning | BMX | Greene, Hale, Marengo, Sumter | 72 hr |
| Mar 17, 9:48 PM CDT | Areal Flood Advisory | BMX | Blount | 3 hr |
| Mar 17, 9:51 PM CDT | Severe Thunderstorm Warning | BMX | Autauga, Chilton, Coosa, Elmore, Lowndes, Montgomery | 69 min |
| Mar 17, 10:06 PM CDT | Severe Thunderstorm Warning | BMX | St. Clair, Shelby, Talladega | 69 min |
| Mar 17, 10:22 PM CDT | Severe Thunderstorm Warning | BMX | Calhoun, Cherokee, Etowah, St. Clair | 68 min |
| Mar 17, 10:26 PM CDT | Areal Flood Advisory | BMX | Calhoun, Cherokee, Cleburne, Etowah, St. Clair, Talladega | 3 hr |
| Mar 17, 10:30 PM CDT | Severe Thunderstorm Warning | BMX | Bullock, Lee, Macon, Tallapoosa | 75 min |
| Mar 17, 10:43 PM CDT | Tornado Warning | BMX | Coosa | 6 min |
| Mar 17, 11:34 PM CDT | Special Weather Statement | BMX | Lee, Russell | 41 min |
| Mar 18, 2:46 AM CDT | Special Weather Statement | BMX | Russell | 44 min |
| Mar 18, 3:06 AM CDT | Wind Advisory | BMX | Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more | 16 hr |
| Mar 18, 8:31 AM CDT | Areal Flood Warning | BMX | Cherokee | 55 hr |
| Mar 18, 9:50 AM CDT | River Flood Warning | BMX | Jefferson, Tuscaloosa, Walker | 36 hr |
Nearby
Tornado Warnings in Alabama, 2021Every tornado warning in 2021Tornadoes in 2021
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.