Alert archive / Alabama / Tornado Warnings in 2021
Tornado Warning 39, NWS Birmingham, AL
NWS Birmingham, AL issued this tornado warning at Mar 17, 2021, 6:48 PM CDT for Dallas County, Alabama. It was in force for 42 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, 6:48 PM CDT (23:48 UTC)
- Expired
- Mar 17, 2021, 7:30 PM CDT
- In force
- 42 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Dallas County, AL
The radar
The Birmingham radar (KBMX), 86 km from the middle of the area, began a volume at 23:50 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, 11:36 AM CDT | Tornado Watch | SPC | 7 hr |
| Mar 17, 6:48 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 11.8 hours before the alert went out and 87 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
- 658 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 759 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 301 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted.
566
WFUS54 KBMX 172348
TORBMX
ALC047-180030-
/O.NEW.KBMX.TO.W.0039.210317T2348Z-210318T0030Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
648 PM CDT Wed Mar 17 2021
The National Weather Service in Birmingham has issued a
* Tornado Warning for...
Southeastern Dallas County in south central Alabama...
* Until 730 PM CDT.
* At 648 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Old Cahaba Park, or 11 miles southwest of
Selmont-West Selmont, 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...
Selma, Valley Grande, Selmont-West Selmont, Orrville, Gardner
Island, Tyler, Dallas Lake, Old Cahaba Park, Memorial Stadium,
Burnsville, Dallas County Horse Arena, Dannelly Reservoir,
Skyharbor Airport, Whites Bluff, Hazen, Craig Field Aiport, Selma
Drag Strip, Edmund Pettus Bridge and Selma University.
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 3228 8729 3259 8690 3257 8690 3254 8691
3249 8688 3248 8689 3246 8686 3244 8687
3243 8683 3242 8685 3241 8685 3237 8681
3235 8681 3233 8685 3232 8685 3214 8715
TIME...MOT...LOC 2348Z 230DEG 27KT 3226 8716
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
17/KLAWS3 follow-up statements
338
WWUS54 KBMX 172354
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
654 PM CDT Wed Mar 17 2021
ALC047-180030-
/O.CON.KBMX.TO.W.0039.000000T0000Z-210318T0030Z/
Dallas AL-
654 PM CDT Wed Mar 17 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR EAST
CENTRAL DALLAS COUNTY...
At 653 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Old Cahaba Park, or 9 miles southwest of
Selmont-West Selmont, moving northeast at 30 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Selma, Valley Grande, Selmont-West Selmont, Gardner Island, Old
Cahaba Park, Memorial Stadium, Burnsville, Dallas County Horse Arena,
Skyharbor Airport, Hazen, Craig Field Aiport, Selma Drag Strip,
Edmund Pettus Bridge and Selma University.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3233 8722 3259 8690 3257 8690 3254 8691
3249 8688 3248 8689 3246 8686 3244 8687
3243 8683 3242 8685 3241 8685 3239 8683
3223 8713
TIME...MOT...LOC 2353Z 230DEG 27KT 3229 8712
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
17/KLAWS136
WWUS54 KBMX 180003
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
703 PM CDT Wed Mar 17 2021
ALC047-180030-
/O.CON.KBMX.TO.W.0039.000000T0000Z-210318T0030Z/
Dallas AL-
703 PM CDT Wed Mar 17 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR EAST
CENTRAL DALLAS COUNTY...
At 702 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Dallas County Horse Arena, or near Selmont-West
Selmont, 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...
Selma, Valley Grande, Selmont-West Selmont, Memorial Stadium, Gardner
Island, Burnsville, Dallas County Horse Arena, Selma Drag Strip,
Skyharbor Airport, Edmund Pettus Bridge and Selma University.
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 3259 8690 3257 8690 3254 8691 3249 8688
3248 8689 3246 8686 3244 8687 3243 8683
3242 8685 3230 8707 3238 8716
TIME...MOT...LOC 0002Z 224DEG 29KT 3237 8706
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
17/KLAWS954
WWUS54 KBMX 180014
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
714 PM CDT Wed Mar 17 2021
ALC047-180030-
/O.CON.KBMX.TO.W.0039.000000T0000Z-210318T0030Z/
Dallas AL-
714 PM CDT Wed Mar 17 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR EAST
CENTRAL DALLAS COUNTY...
At 713 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Selma, moving northeast at 35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Selma, Selmont-West Selmont, Memorial Stadium, Gardner Island,
Burnsville, Edmund Pettus Bridge and Selma University.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3259 8690 3257 8690 3254 8691 3249 8688
3248 8689 3246 8686 3244 8687 3243 8683
3242 8685 3239 8702 3242 8709
TIME...MOT...LOC 0013Z 218DEG 31KT 3245 8700
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
17/KLAWSThe office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 16, 9:59 PM CDT | Special Weather Statement | BMX | Sumter | 46 min |
| Mar 16, 10:11 PM CDT | Severe Thunderstorm Warning | BMX | Sumter | 24 min |
| Mar 16, 10:38 PM CDT | Special Weather Statement | BMX | Hale | 37 min |
| Mar 17, 1:27 AM CDT | Dense Fog Advisory | BMX | Autauga, Barbour, Blount, Bullock, Calhoun, Chambers and 22 more | 6 hr |
| Mar 17, 11:18 AM CDT | Special Weather Statement | BMX | Jefferson | 27 min |
| Mar 17, 12:13 PM CDT | Tornado Warning | BMX | Dallas | 47 min |
| Mar 17, 12:19 PM CDT | Areal Flood Advisory | BMX | Jefferson, Tuscaloosa | 2 hr |
| Mar 17, 12:21 PM CDT | Severe Thunderstorm Warning | BMX | Fayette, Lamar, Marion | 25 min |
| Mar 17, 12:41 PM CDT | Tornado Warning | BMX | Autauga | 64 min |
| Mar 17, 12:59 PM CDT | Tornado Warning | BMX | Greene, Sumter | 61 min |
| Mar 17, 1:18 PM CDT | Tornado Warning | BMX | Autauga, Chilton, Elmore | 57 min |
| Mar 17, 1:40 PM CDT | Severe Thunderstorm Warning | BMX | Pickens, Tuscaloosa | 28 min |
| Mar 17, 1:52 PM CDT | Tornado Warning | BMX | Greene, Hale, Marengo, Sumter | 41 min |
| Mar 17, 1:58 PM CDT | Tornado Warning | BMX | Marengo | 62 min |
| Mar 17, 1:59 PM CDT | Tornado Warning | BMX | Greene, Hale | 46 min |
| Mar 17, 2:02 PM CDT | Tornado Warning | BMX | Chilton, Coosa | 58 min |
| Mar 17, 2:09 PM CDT | Tornado Warning | BMX | Marengo | 66 min |
| Mar 17, 2:14 PM CDT | Tornado Warning | BMX | Jefferson, Walker | 61 min |
| Mar 17, 2:20 PM CDT | Tornado Warning | BMX | Tuscaloosa | 40 min |
| Mar 17, 2:33 PM CDT | Tornado Warning | BMX | Clay, Coosa, Talladega | 42 min |
| Mar 17, 2:44 PM CDT | Flash Flood Warning | BMX | Hale, Marengo, Perry | 2 hr |
| Mar 17, 2:47 PM CDT | Areal Flood Advisory | BMX | Greene, Pickens, Sumter, Tuscaloosa | 2 hr |
| Mar 17, 2:48 PM CDT | Areal Flood Advisory | BMX | Blount, Jefferson, Walker | 2 hr |
| Mar 17, 2:48 PM CDT | Areal Flood Advisory | BMX | Fayette, Lamar, Marion, Walker, Winston | 2 hr |
| Mar 17, 2:51 PM CDT | Flash Flood Warning | BMX | Jefferson | 2 hr |
| Mar 17, 2:53 PM CDT | Tornado Warning | BMX | Tuscaloosa | 52 min |
| Mar 17, 2:54 PM CDT | Tornado Warning | BMX | Dallas, Marengo, Perry | 66 min |
| Mar 17, 2:58 PM CDT | Tornado Warning | BMX | Blount, Jefferson | 34 min |
| Mar 17, 3:21 PM CDT | Tornado Warning | BMX | Tuscaloosa | 54 min |
| Mar 17, 3:25 PM CDT | Flash Flood Warning | BMX | Tuscaloosa | 2 hr |
| Mar 17, 3:28 PM CDT | Areal Flood Advisory | BMX | Dallas, Perry | 2 hr |
| Mar 17, 3:34 PM CDT | Tornado Warning | BMX | Jefferson, Walker | 56 min |
| Mar 17, 3:37 PM CDT | Tornado Warning | BMX | Marengo | 38 min |
| Mar 17, 3:58 PM CDT | Tornado Warning | BMX | Jefferson | 47 min |
| Mar 17, 3:58 PM CDT | Tornado Warning | BMX | Dallas, Perry | 47 min |
| Mar 17, 4:12 PM CDT | Tornado Warning | BMX | Dallas | 48 min |
| Mar 17, 4:28 PM CDT | Tornado Warning | BMX | Marengo | 62 min |
| Mar 17, 4:36 PM CDT | Tornado Warning | BMX | Jefferson | 54 min |
| Mar 17, 4:40 PM CDT | Tornado Warning | BMX | Autauga | 50 min |
| Mar 17, 4:43 PM CDT | Tornado Warning | BMX | Dallas, Perry | 47 min |
| Mar 17, 5:00 PM CDT | Tornado Warning | BMX | Chilton | 60 min |
| Mar 17, 5:09 PM CDT | Areal Flood Advisory | BMX | Jefferson | 111 min |
| Mar 17, 5:15 PM CDT | Tornado Warning | BMX | Chilton | 60 min |
| Mar 17, 5:16 PM CDT | Tornado Warning | BMX | Blount | 44 min |
| Mar 17, 5:23 PM CDT | Tornado Warning | BMX | Dallas, Marengo, Perry | 67 min |
| Mar 17, 5:26 PM CDT | Areal Flood Advisory | BMX | Autauga, Chilton, Dallas, Hale, Marengo, Perry and 1 more | 3 hr |
| Mar 17, 5:41 PM CDT | Tornado Warning | BMX | Marengo | 23 min |
| Mar 17, 5:42 PM CDT | Tornado Warning | BMX | Chilton, Coosa, Shelby, Talladega | 48 min |
| Mar 17, 5:48 PM CDT | Tornado Warning | BMX | Blount | 42 min |
| Mar 17, 5:56 PM CDT | Areal Flood Advisory | BMX | Walker, Winston | 44 min |
| Mar 17, 6:09 PM CDT | Tornado Warning | BMX | Chilton, Coosa, Shelby, Talladega | 13 min |
| Mar 17, 6:40 PM CDT | Flash Flood Warning | BMX | Walker, Winston | 3 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.