Alert archive / Alabama / Tornado Warnings in 2021
Tornado Warning 26, NWS Birmingham, AL
NWS Birmingham, AL issued this tornado warning at Mar 17, 2021, 4:12 PM CDT for Dallas County, Alabama. It was in force for 48 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, 4:12 PM CDT (21:12 UTC)
- Expired
- Mar 17, 2021, 5:00 PM CDT
- In force
- 48 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), 77 km from the middle of the area, began a volume at 21:16 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 |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 9.2 hours before the alert went out and 78 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.
338
WFUS54 KBMX 172112
TORBMX
ALC047-172200-
/O.NEW.KBMX.TO.W.0026.210317T2112Z-210317T2200Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
412 PM CDT Wed Mar 17 2021
The National Weather Service in Birmingham has issued a
* Tornado Warning for...
Northeastern Dallas County in south central Alabama...
* Until 500 PM CDT.
* At 412 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Old Cahaba Park, 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, Paul M Grist State
Park, Old Cahaba Park, Memorial Stadium, Burnsville, Dallas County
Horse Arena, Potter Station, Skyharbor Airport, Summerfield, Valley
Creek Junction, Plantersville, Edmund Pettus Bridge, Selma
University, Barrett Creek and Hazen.
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 8721 3266 8699 3266 8692 3262 8691
3261 8691 3257 8690 3254 8691 3249 8688
3248 8689 3248 8688 3245 8686 3229 8709
TIME...MOT...LOC 2112Z 216DEG 29KT 3234 8711
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
87/GRANTHAM2 follow-up statements
377
WWUS54 KBMX 172125
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
425 PM CDT Wed Mar 17 2021
ALC047-172200-
/O.CON.KBMX.TO.W.0026.000000T0000Z-210317T2200Z/
Dallas AL-
425 PM CDT Wed Mar 17 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR
NORTHEASTERN DALLAS COUNTY...
At 425 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Selma, moving northeast at 30 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Selma, Valley Grande, Selmont-West Selmont, Memorial Stadium,
Burnsville, Dallas County Horse Arena, Potter Station, Summerfield,
Valley Creek Junction, Plantersville, Edmund Pettus Bridge, Selma
University and Barrett Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3236 8702 3243 8713 3266 8694 3266 8692
3262 8691 3261 8691 3257 8690 3254 8691
3249 8688 3248 8689 3248 8688 3245 8686
3243 8689
TIME...MOT...LOC 2125Z 223DEG 25KT 3242 8703
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
87/GRANTHAM900
WWUS54 KBMX 172135
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
435 PM CDT Wed Mar 17 2021
ALC047-172200-
/O.CON.KBMX.TO.W.0026.000000T0000Z-210317T2200Z/
Dallas AL-
435 PM CDT Wed Mar 17 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR
NORTHEASTERN DALLAS COUNTY...
At 435 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Valley Grande, moving northeast at 40 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, Burnsville, Valley Creek Junction and Barrett
Creek.
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 3239 8696 3247 8707 3265 8692 3262 8691
3261 8691 3257 8690 3254 8691 3249 8688
3248 8689 3248 8688 3245 8686 3243 8689
TIME...MOT...LOC 2135Z 223DEG 34KT 3247 8695
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
87/GRANTHAMThe 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, 4:28 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 |
| Mar 17, 6:48 PM CDT | Tornado Warning | BMX | Dallas | 42 min |
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.