Alert archive / Alabama / Tornado Warnings in 2021

Tornado Warning 17, NWS Birmingham, AL

March 17, 2021Clay County, Coosa County, Talladega County, Alabama

NWS Birmingham, AL issued this tornado warning at Mar 17, 2021, 2:33 PM CDT for Clay County, Coosa County, Talladega 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, 2:33 PM CDT (19:33 UTC)
Expired: Mar 17, 2021, 3:15 PM CDT
In force: 42 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Tornado: Observed
Hail: 0.75 in

Counties Clay County, AL, Coosa County, AL, Talladega County, AL

The radar

The Birmingham radar (KBMX), 51 km from the middle of the area, began a volume at 19:36 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
Mar 17, 11:36 AM CDT	Tornado Watch PDS	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.6 hours before the alert went out and 52 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

The text

As transmitted.

872 
WFUS54 KBMX 171933
TORBMX
ALC027-037-121-172015-
/O.NEW.KBMX.TO.W.0017.210317T1933Z-210317T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
233 PM CDT Wed Mar 17 2021

The National Weather Service in Birmingham has issued a

* Tornado Warning for...
  South central Talladega County in east central Alabama...
  Northeastern Coosa County in east central Alabama...
  Southwestern Clay County in east central Alabama...

* Until 315 PM CDT.
    
* At 233 PM CDT, a tornado producing storm was located over Weogufka,
  moving northeast at 25 mph.

  HAZARD...Damaging tornado.

  SOURCE...Radar confirmed tornado.

  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...
  Sylacauga, Goodwater, Weogufka, Stewartville, Parkdale, Cleveland
  Crossroads, Overbrook, Hollins, Gantts Quarry and Mignon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 3297 8631 3304 8640 3328 8617 3311 8597
TIME...MOT...LOC 1933Z 230DEG 23KT 3303 8632 

TORNADO...OBSERVED
HAIL...<.75IN

$$

40/Sizemore

2 follow-up statements

471 
WWUS54 KBMX 172000
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
300 PM CDT Wed Mar 17 2021

ALC037-172010-
/O.CAN.KBMX.TO.W.0017.000000T0000Z-210317T2015Z/
Coosa AL-
300 PM CDT Wed Mar 17 2021

...THE TORNADO WARNING FOR NORTHEASTERN COOSA 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 700 PM CDT for east central
Alabama.

LAT...LON 3313 8618 3319 8625 3321 8624 3328 8617
      3318 8605
TIME...MOT...LOC 2000Z 218DEG 26KT 3318 8617 

$$

ALC027-121-172015-
/O.CON.KBMX.TO.W.0017.000000T0000Z-210317T2015Z/
Talladega AL-Clay AL-
300 PM CDT Wed Mar 17 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR SOUTH
CENTRAL TALLADEGA AND SOUTHWESTERN CLAY COUNTIES...
    
At 300 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Sylacauga, 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...
Sylacauga.

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 3313 8618 3319 8625 3321 8624 3328 8617
      3318 8605
TIME...MOT...LOC 2000Z 218DEG 26KT 3318 8617 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

40/Sizemore

465 
WWUS54 KBMX 172005
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
305 PM CDT Wed Mar 17 2021

ALC027-121-172015-
/O.EXP.KBMX.TO.W.0017.000000T0000Z-210317T2015Z/
Talladega AL-Clay AL-
305 PM CDT Wed Mar 17 2021

...THE TORNADO WARNING FOR SOUTH CENTRAL TALLADEGA AND SOUTHWESTERN
CLAY COUNTIES WILL EXPIRE AT 315 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 700 PM CDT for east central
Alabama.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Birmingham.

LAT...LON 3313 8618 3319 8625 3321 8624 3328 8617
      3318 8605
TIME...MOT...LOC 2005Z 230DEG 23KT 3320 8614 

$$

40/Sizemore

The 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 Tornado observed	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 Tornado observed	BMX	Tuscaloosa	40 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 Tornado observed	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 Tornado observed	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 Tornado observed	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 Tornado observed	BMX	Marengo	62 min
Mar 17, 4:36 PM CDT	Tornado Warning Tornado observed	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 Tornado observed	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, 2021 Every tornado warning in 2021 Tornadoes 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.