Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 74, NWS Birmingham, AL

April 24, 20214 counties in Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 24, 2021, 5:40 PM CDT for 4 counties in Alabama. It was in force for 35 min. 3 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, 5:40 PM CDT (22:40 UTC)
Expired: Apr 24, 2021, 6:15 PM CDT
In force: 35 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Calhoun County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL

The radar

The Birmingham radar (KBMX), 56 km from the middle of the area, began a volume at 22:40 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, 5:45 PM CDT	TSTM WND DMG	Cropwell, AL	SEVERAL TREES UPROOTED NEAR CROPWELL.
Apr 24, 5:49 PM CDT	HAIL 0.5	2 Nw Riverside, AL	REPORT FROM MPING: HALF-INCH (0.50 IN.).
Apr 24, 6:05 PM CDT	TSTM WND DMG	Lincoln, AL	SEVERAL TREES WERE BLOWN DOWN NEAR LINCOLN.

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

Birmingham, AL (KBMX), launched 12:00Z, 10.7 hours before the alert went out and 56 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: 580 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 855 m²/s²
0-3 km storm-relative helicity: 1103 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

286 
WUUS54 KBMX 242240
SVRBMX
ALC015-115-117-121-242315-
/O.NEW.KBMX.SV.W.0074.210424T2240Z-210424T2315Z/

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

The National Weather Service in Birmingham has issued a

* Severe Thunderstorm Warning for...
  Northern Talladega County in east central Alabama...
  Southwestern Calhoun County in east central Alabama...
  Northeastern Shelby County in central Alabama...
  Southern St. Clair County in central Alabama...

* Until 615 PM CDT.

* At 540 PM CDT, severe thunderstorms were located along a line
  extending from near Ragland to Meadowbrook, moving east at 70 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...
  Hoover, Anniston, Talladega, Pell City, Leeds, Moody, Chelsea,
  Odenville, Saks, West End-Cobb Town, Lincoln, Weaver, Indian
  Springs Village, Riverside, Vincent, Ragland, Harpersville,
  Munford, Ohatchee and Alpine Bay Resort.

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.

&&

LAT...LON 3376 8578 3334 8616 3336 8679 3347 8665
      3347 8661 3351 8657 3352 8652 3355 8652
      3356 8654 3377 8627
TIME...MOT...LOC 2240Z 265DEG 61KT 3373 8624 3338 8669 

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

75 Linhares

1 follow-up statement

357 
WWUS54 KBMX 242255
SVSBMX

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

ALC015-115-117-121-242315-
/O.CON.KBMX.SV.W.0074.000000T0000Z-210424T2315Z/
Talladega AL-Calhoun AL-Shelby AL-St. Clair AL-
555 PM CDT Sat Apr 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR NORTHERN TALLADEGA...SOUTHWESTERN CALHOUN...NORTHEASTERN SHELBY
AND SOUTHEASTERN ST. CLAIR COUNTIES...

At 554 PM CDT, severe thunderstorms were located along a line
extending from near Ohatchee to near Vincent, moving east at 45 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...
Anniston, Talladega, Pell City, Saks, West End-Cobb Town, Lincoln,
Weaver, Riverside, Vincent, Ragland, Harpersville, Munford, Westover,
Ohatchee, Alpine Bay Resort, Talladega Superspeedway, Talladega
Municipal Airport, Alpine, Logan Martin Lake and Honda Manufacturing
Of Alabama.

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.

&&

LAT...LON 3335 8658 3377 8610 3376 8578 3334 8616
TIME...MOT...LOC 2254Z 263DEG 59KT 3376 8600 3341 8645 

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

75 Linhares

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, 5:43 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, 5:52 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Cleburne, Etowah	37 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.