Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 153, NWS Birmingham, AL

December 6, 20214 counties in Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Dec 6, 2021, 8:36 AM CST for 4 counties in Alabama. It was in force for 54 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, 8:36 AM CST (14:36 UTC)
Expired: Dec 6, 2021, 9:30 AM CST
In force: 54 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Fayette County, AL, Lamar County, AL, Pickens County, AL, Tuscaloosa County, AL

The radar

The Birmingham radar (KBMX), 84 km from the middle of the area, began a volume at 14:39 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, 2.6 hours before the alert went out and 83 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.

242 
WUUS54 KBMX 061436
SVRBMX
ALC057-075-107-125-061530-
/O.NEW.KBMX.SV.W.0153.211206T1436Z-211206T1530Z/

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

The National Weather Service in Birmingham has issued a

* Severe Thunderstorm Warning for...
  Tuscaloosa County in west central Alabama...
  Pickens County in west central Alabama...
  Fayette County in west central Alabama...
  Southeastern Lamar County in west central Alabama...

* Until 930 AM CST.

* At 834 AM CST, severe thunderstorms were located along a line
  extending from near Fayette to near Ethelsville to near Deerbrook,
  moving east at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Tuscaloosa, Northport, Fayette, Aliceville, Gordo, Reform,
  Millport, Carrollton, Pickensville, Holt, Lake View, Brookwood,
  Coaling, Vance, Berry, Coker, Kennedy, Belk, Ethelsville and
  McMullen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

Continuous cloud to ground lightning is occurring with these storms. 
Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3336 8830 3353 8810 3383 8785 3382 8753
      3369 8753 3369 8742 3360 8742 3351 8726
      3346 8734 3331 8716 3328 8707 3319 8720
      3313 8720 3313 8728 3301 8732 3302 8783
      3315 8784 3304 8815 3300 8817 3306 8833
TIME...MOT...LOC 1434Z 290DEG 36KT 3374 8787 3342 8814 3321 8849 

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

$$

56

1 follow-up statement

296 
WWUS54 KBMX 061449
SVSBMX

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

ALC075-061459-
/O.CAN.KBMX.SV.W.0153.000000T0000Z-211206T1530Z/
Lamar AL-
849 AM CST Mon Dec 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LAMAR COUNTY IS
CANCELLED...

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

LAT...LON 3330 8830 3352 8794 3380 8766 3382 8753
      3369 8753 3369 8742 3360 8742 3351 8726
      3346 8734 3331 8716 3328 8707 3319 8720
      3313 8720 3313 8728 3301 8732 3302 8783
      3315 8784 3304 8815 3300 8817 3306 8833
TIME...MOT...LOC 1449Z 290DEG 36KT 3369 8771 3337 8798 3316 8833 

$$

ALC057-107-125-061530-
/O.CON.KBMX.SV.W.0153.000000T0000Z-211206T1530Z/
Tuscaloosa AL-Pickens AL-Fayette AL-
849 AM CST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 AM CST
FOR TUSCALOOSA...PICKENS AND SOUTHERN FAYETTE COUNTIES...

At 849 AM CST, severe thunderstorms were located along a line
extending from near Bankston to near Reform to near Prairie Point,
moving east at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Tuscaloosa, Northport, Aliceville, Gordo, Reform, Carrollton,
Pickensville, Holt, Lake View, Brookwood, Coaling, Vance, Berry,
Coker, McMullen, Samantha, McFarland Mall, Benevola, Johnston Lake
and Lake Lurleen State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Birmingham.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3330 8830 3352 8794 3380 8766 3382 8753
      3369 8753 3369 8742 3360 8742 3351 8726
      3346 8734 3331 8716 3328 8707 3319 8720
      3313 8720 3313 8728 3301 8732 3302 8783
      3315 8784 3304 8815 3300 8817 3306 8833
TIME...MOT...LOC 1449Z 290DEG 36KT 3369 8771 3337 8798 3316 8833 

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

$$

56

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, 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, 10:42 AM CST	Severe Thunderstorm Warning	BMX	Clay, Coosa, Talladega	39 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.