Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 155, NWS Birmingham, AL

December 6, 2021Clay County, Coosa County, Talladega County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Dec 6, 2021, 10:42 AM CST for Clay County, Coosa County, Talladega County, Alabama. It was in force for 39 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: Dec 6, 2021, 10:42 AM CST (16:42 UTC)
Expired: Dec 6, 2021, 11:21 AM CST
In force: 39 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

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

The radar

The Birmingham radar (KBMX), 79 km from the middle of the area, began a volume at 16:46 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 nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 4.7 hours before the alert went out and 79 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: 219 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 484 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 223 m²/s²
0-3 km storm-relative helicity: 204 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted.

409 
WUUS54 KBMX 061642
SVRBMX
ALC027-037-121-061745-
/O.NEW.KBMX.SV.W.0155.211206T1642Z-211206T1745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Birmingham AL
1042 AM CST Mon Dec 6 2021

The National Weather Service in Birmingham has issued a

* Severe Thunderstorm Warning for...
  Talladega County in east central Alabama...
  Northern Coosa County in east central Alabama...
  Clay County in east central Alabama...

* Until 1145 AM CST.

* At 1042 AM CST, severe thunderstorms were located along a line
  extending from Talladega to Talladega Springs, moving east at 45
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Talladega, Sylacauga, Childersburg, Lineville, Ashland, Goodwater,
  Talladega Springs, Stewartville, Waldo, Barfield, Winterboro,
  Strickland Crossroads, Hatchet, Fayetteville, Alpine, Sycamore,
  Parkdale, Delta, Lay Lake and Cleveland Crossroads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3329 8565 3311 8566 3311 8597 3309 8598
      3309 8601 3299 8601 3307 8651 3312 8646
      3314 8647 3351 8621 3351 8585 3347 8589
      3347 8578 3350 8576 3349 8564 3333 8565
      3331 8564
TIME...MOT...LOC 1642Z 276DEG 38KT 3342 8611 3313 8645 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

32/Davis

3 follow-up statements

862 
WWUS54 KBMX 061658
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
1058 AM CST Mon Dec 6 2021

ALC027-037-121-061745-
/O.CON.KBMX.SV.W.0155.000000T0000Z-211206T1745Z/
Talladega AL-Coosa AL-Clay AL-
1058 AM CST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM CST
FOR CENTRAL TALLADEGA...NORTHEASTERN COOSA AND CLAY COUNTIES...

At 1058 AM CST, severe thunderstorms were located along a line
extending from near Grant Town to 7 miles south of Waldo to near
Hanover, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Sylacauga, Lineville, Ashland, Goodwater, Stewartville, Waldo,
Barfield, Parkdale, Delta, Hatchet, Cleveland Crossroads, Cragford,
Overbrook, Hollins, Camp Mac, Chandler Springs, Ironaton, Roselle,
Lake Chinnabee and Millerville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3329 8565 3311 8566 3311 8597 3309 8598
      3309 8601 3299 8601 3305 8639 3313 8630
      3314 8622 3350 8599 3351 8585 3347 8589
      3347 8578 3350 8576 3349 8564 3333 8565
      3331 8564
TIME...MOT...LOC 1658Z 274DEG 41KT 3347 8592 3328 8601 3304 8623 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

32/Davis

858 
WWUS54 KBMX 061707
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
1107 AM CST Mon Dec 6 2021

ALC121-061717-
/O.CAN.KBMX.SV.W.0155.000000T0000Z-211206T1745Z/
Talladega AL-
1107 AM CST Mon Dec 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL TALLADEGA COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3329 8565 3311 8566 3311 8597 3309 8598
      3309 8601 3299 8601 3303 8626 3330 8598
      3338 8595 3340 8592 3344 8592 3346 8590
      3350 8589 3350 8586 3347 8589 3347 8578
      3350 8576 3349 8564 3333 8565 3331 8564
TIME...MOT...LOC 1707Z 274DEG 41KT 3347 8580 3328 8590 3303 8612 

$$

ALC027-037-061745-
/O.CON.KBMX.SV.W.0155.000000T0000Z-211206T1745Z/
Coosa AL-Clay AL-
1107 AM CST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM CST
FOR NORTHEASTERN COOSA AND CLAY COUNTIES...

At 1107 AM CST, severe thunderstorms were located along a line
extending from Mount Cheaha to near Ashland to Hatchet, moving east
at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Lineville, Ashland, Goodwater, Barfield, Parkdale, Delta, Hatchet,
Cleveland Crossroads, Cragford, Hollins, Roselle, Lake Chinnabee,
Millerville, Mellow Valley, Gunthertown and Motley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3329 8565 3311 8566 3311 8597 3309 8598
      3309 8601 3299 8601 3303 8626 3330 8598
      3338 8595 3340 8592 3344 8592 3346 8590
      3350 8589 3350 8586 3347 8589 3347 8578
      3350 8576 3349 8564 3333 8565 3331 8564
TIME...MOT...LOC 1707Z 274DEG 41KT 3347 8580 3328 8590 3303 8612 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

32/Davis

727 
WWUS54 KBMX 061721
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
1121 AM CST Mon Dec 6 2021

ALC027-037-061731-
/O.CAN.KBMX.SV.W.0155.000000T0000Z-211206T1745Z/
Coosa AL-Clay AL-
1121 AM CST Mon Dec 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN COOSA AND CLAY
COUNTIES IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with these thunderstorms.

LAT...LON 3329 8565 3311 8566 3311 8597 3309 8598
      3309 8601 3299 8601 3303 8626 3330 8598
      3338 8595 3340 8592 3344 8592 3346 8590
      3350 8589 3350 8586 3347 8589 3347 8578
      3350 8576 3349 8564 3333 8565 3331 8564
TIME...MOT...LOC 1718Z 276DEG 38KT 3346 8565 3327 8575 3302 8597 

$$

32/Davis

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 6, 5:22 AM CST	Dense Fog Advisory	BMX	Barbour, Bullock, Lee, Macon, Pike, Russell	4 hr
Dec 6, 7:55 AM CST	Special Weather Statement	BMX	Fayette, Lamar, Pickens	50 min
Dec 6, 8:36 AM CST	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Pickens, Tuscaloosa	54 min
Dec 6, 9:09 AM CST	Severe Thunderstorm Warning	BMX	Walker	21 min
Dec 6, 9:17 AM CST	Special Weather Statement	BMX	Jefferson	43 min
Dec 6, 9:33 AM CST	Special Weather Statement	BMX	Bibb, Shelby	42 min
Dec 6, 9:51 AM CST	Special Weather Statement	BMX	Marshall	24 min
Dec 6, 10:02 AM CST	Special Weather Statement	BMX	St. Clair	43 min
Dec 6, 10:15 AM CST	Special Weather Statement	BMX	Chilton, Shelby, Talladega	45 min
Dec 6, 10:51 AM CST	Special Weather Statement	BMX	Greene, Hale, Sumter	39 min
Dec 6, 10:53 AM CST	Special Weather Statement	BMX	Coosa, Elmore, Tallapoosa	52 min
Dec 6, 11:24 AM CST	Special Weather Statement	BMX	Chambers, Randolph	66 min
Dec 6, 11:36 AM CST	Special Weather Statement	BMX	Elmore	24 min
Dec 6, 11:37 AM CST	Special Weather Statement	BMX	Hale, Perry	38 min
Dec 6, 12:03 PM CST	Special Weather Statement	BMX	Lee	57 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2021 Every severe thunderstorm warning 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.