Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 77, NWS Birmingham, AL

April 24, 20214 counties in Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 24, 2021, 5:52 PM CDT for 4 counties in Alabama. It was in force for 37 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 24, 2021, 5:52 PM CDT (22:52 UTC)
Expired: Apr 24, 2021, 6:29 PM CDT
In force: 37 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Calhoun County, AL, Cherokee County, AL, Cleburne County, AL, Etowah County, AL

The radar

The Atlanta radar (KFFC), 118 km from the middle of the area, began a volume at 22:52 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.

What was reported inside it

Time	Report	Where	Remark
Apr 24, 5:54 PM CDT	HAIL 0.88	Piedmont, AL
Apr 24, 6:00 PM CDT	HAIL 1	1 Nne Jacksonville Stat, AL	1 INCH HAIL REPORTED IN JACKSONVILLE. TIME ESTIMATED BY RADAR.
Apr 24, 6:00 PM CDT	HAIL 1	Jacksonville, AL
Apr 24, 6:06 PM CDT	HAIL 1	5 W Liberty Hill, AL	1 INCH HAIL REPORTED IN NANCES CREEK, AL. TIME ESTIMATED BY RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 24, 4:52 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.9 hours before the alert went out and 123 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 449 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 309 m²/s²
0-3 km storm-relative helicity: 449 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

346 
WUUS54 KBMX 242252
SVRBMX
ALC015-019-029-055-242345-
/O.NEW.KBMX.SV.W.0077.210424T2252Z-210424T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Birmingham AL
552 PM CDT Sat Apr 24 2021

The National Weather Service in Birmingham has issued a

* Severe Thunderstorm Warning for...
  Northern Calhoun County in east central Alabama...
  Southeastern Etowah County in northeastern Alabama...
  North central Cleburne County in east central Alabama...
  Southeastern Cherokee County in northeastern Alabama...

* Until 645 PM CDT.

* At 552 PM CDT, severe thunderstorms were located along a line
  extending from near Piedmont to near Ohatchee, moving east at 35
  mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Jacksonville, Piedmont, Hokes Bluff, Glencoe, Weaver, Ohatchee,
  Pleasant Gap, Alexandria, Jacksonville State University, Spring
  Garden, Cobb City, Knightens Crossroads, Liberty Hill, Sulphur
  Springs, Borden Springs and Wellington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3375 8569 3375 8603 3396 8594 3400 8541
      3391 8539
TIME...MOT...LOC 2252Z 261DEG 29KT 3395 8564 3378 8606 

HAIL...1.50IN
WIND...60MPH
 
$$

75 Linhares

2 follow-up statements

119 
WWUS54 KBMX 242318
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
618 PM CDT Sat Apr 24 2021

ALC055-242328-
/O.CAN.KBMX.SV.W.0077.000000T0000Z-210424T2345Z/
Etowah AL-
618 PM CDT Sat Apr 24 2021

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

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

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern and east central Alabama.

LAT...LON 3375 8569 3375 8581 3399 8553 3400 8541
      3391 8539
TIME...MOT...LOC 2318Z 264DEG 33KT 3398 8541 3377 8570 

$$

ALC015-019-029-242345-
/O.CON.KBMX.SV.W.0077.000000T0000Z-210424T2345Z/
Calhoun AL-Cleburne AL-Cherokee AL-
618 PM CDT Sat Apr 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR NORTHEASTERN CALHOUN...NORTH CENTRAL CLEBURNE AND SOUTHEASTERN
CHEROKEE COUNTIES...

At 618 PM CDT, severe thunderstorms were located along a line
extending from 6 miles east of Pleasant Gap to near Jacksonville,
moving east at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Jacksonville, Piedmont, Weaver, Pleasant Gap, Borden Springs and
Liberty Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3375 8569 3375 8581 3399 8553 3400 8541
      3391 8539
TIME...MOT...LOC 2318Z 264DEG 33KT 3398 8541 3377 8570 

HAIL...1.00IN
WIND...60MPH
 
$$

32/Davis

106 
WWUS54 KBMX 242329
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
629 PM CDT Sat Apr 24 2021

ALC015-019-029-242339-
/O.CAN.KBMX.SV.W.0077.000000T0000Z-210424T2345Z/
Calhoun AL-Cleburne AL-Cherokee AL-
629 PM CDT Sat Apr 24 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CALHOUN...NORTH
CENTRAL CLEBURNE AND SOUTHEASTERN CHEROKEE COUNTIES IS CANCELLED...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern and east central Alabama.

Remember, a Severe Thunderstorm Warning still remains in effect for
central and southern portions of Cleburne County.

LAT...LON 3375 8569 3375 8581 3399 8553 3400 8541
      3391 8539
TIME...MOT...LOC 2328Z 261DEG 29KT 3399 8531 3378 8560 

$$

32/Davis

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 4:37 AM CDT	Special Weather Statement	BMX	Lowndes	68 min
Apr 24, 5:40 AM CDT	Special Weather Statement	BMX	Lowndes	65 min
Apr 24, 6:24 AM CDT	Special Weather Statement	BMX	Montgomery	36 min
Apr 24, 6:26 AM CDT	Special Weather Statement	BMX	Pike	49 min
Apr 24, 7:05 AM CDT	Special Weather Statement	BMX	Barbour, Bullock, Lee, Macon, Russell	55 min
Apr 24, 8:04 AM CDT	Special Weather Statement	BMX	Sumter	26 min
Apr 24, 8:25 AM CDT	Special Weather Statement	BMX	Hale	35 min
Apr 24, 8:55 AM CDT	Special Weather Statement	BMX	Perry	35 min
Apr 24, 9:02 AM CDT	Special Weather Statement	BMX	Marengo	28 min
Apr 24, 9:46 AM CDT	Special Weather Statement	BMX	Dallas	29 min
Apr 24, 10:33 AM CDT	Special Weather Statement	BMX	Lowndes, Montgomery	42 min
Apr 24, 11:05 AM CDT	Special Weather Statement	BMX	Macon	40 min
Apr 24, 3:11 PM CDT	Special Weather Statement	BMX	Perry	34 min
Apr 24, 3:22 PM CDT	Special Weather Statement	BMX	Montgomery	38 min
Apr 24, 3:26 PM CDT	Special Weather Statement	BMX	Fayette	34 min
Apr 24, 3:27 PM CDT	Special Weather Statement	BMX	Winston	33 min
Apr 24, 3:28 PM CDT	Severe Thunderstorm Warning	BMX	Macon, Montgomery	32 min
Apr 24, 3:31 PM CDT	Special Weather Statement	BMX	Clay	29 min
Apr 24, 3:35 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Marion, Walker, Winston	40 min
Apr 24, 3:44 PM CDT	Severe Thunderstorm Warning	BMX	Macon, Tallapoosa	31 min
Apr 24, 3:58 PM CDT	Severe Thunderstorm Warning	BMX	Lee	35 min
Apr 24, 4:00 PM CDT	Special Weather Statement	BMX	Winston	15 min
Apr 24, 4:01 PM CDT	Special Weather Statement	BMX	Randolph	44 min
Apr 24, 4:03 PM CDT	Special Weather Statement	BMX	Autauga	42 min
Apr 24, 4:14 PM CDT	Special Weather Statement	BMX	Walker	46 min
Apr 24, 4:14 PM CDT	Severe Thunderstorm Warning	BMX	Chambers	33 min
Apr 24, 4:18 PM CDT	Special Weather Statement	BMX	Lowndes	42 min
Apr 24, 4:22 PM CDT	Special Weather Statement	BMX	Russell	23 min
Apr 24, 4:29 PM CDT	Special Weather Statement	BMX	Blount, Tuscaloosa	61 min
Apr 24, 4:31 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Walker	29 min
Apr 24, 4:35 PM CDT	Severe Thunderstorm Warning	BMX	Elmore, Montgomery	36 min
Apr 24, 4:35 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson	25 min
Apr 24, 4:52 PM CDT	Special Weather Statement	BMX	Chambers, Randolph, Tallapoosa	38 min
Apr 24, 4:55 PM CDT	Severe Thunderstorm Warning	BMX	Lee, Macon, Tallapoosa	38 min
Apr 24, 4:58 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair	32 min
Apr 24, 5:02 PM CDT	Severe Thunderstorm Warning	BMX	Blount, St. Clair	28 min
Apr 24, 5:17 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Etowah, St. Clair	43 min
Apr 24, 5:23 PM CDT	Severe Thunderstorm Warning	BMX	Pike	52 min
Apr 24, 5:25 PM CDT	Special Weather Statement	BMX	Bibb, St. Clair, Shelby	35 min
Apr 24, 5:37 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Shelby, Talladega	23 min
Apr 24, 5:40 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, St. Clair, Shelby, Talladega	35 min
Apr 24, 5:43 PM CDT	Severe Thunderstorm Warning	BMX	Barbour, Bullock	47 min
Apr 24, 5:44 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	31 min
Apr 24, 5:58 PM CDT	Special Weather Statement	BMX	Shelby	32 min
Apr 24, 6:09 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Clay, Cleburne, Shelby, Talladega	51 min
Apr 24, 6:12 PM CDT	Severe Thunderstorm Warning	BMX	Barbour	18 min
Apr 24, 6:22 PM CDT	Severe Thunderstorm Warning	BMX	Barbour, Pike	38 min
Apr 24, 6:28 PM CDT	Severe Thunderstorm Warning	BMX	Cleburne	32 min
Apr 24, 6:37 PM CDT	Special Weather Statement	BMX	Clay, Randolph	38 min
Apr 24, 6:48 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Clay, Randolph, Tallapoosa	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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.