Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 140, NWS Birmingham, AL

August 9, 2021Talladega County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Aug 9, 2021, 4:44 PM CDT for Talladega County, Alabama. It was in force for 31 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: Aug 9, 2021, 4:44 PM CDT (21:44 UTC)
Expired: Aug 9, 2021, 5:15 PM CDT
In force: 31 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Talladega County, AL

The radar

The Birmingham radar (KBMX), 77 km from the middle of the area, began a volume at 21:44 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, 9.7 hours before the alert went out and 77 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: 1644 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 893 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

133 
WUUS54 KBMX 092144
SVRBMX
ALC121-092215-
/O.NEW.KBMX.SV.W.0140.210809T2144Z-210809T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Birmingham AL
444 PM CDT Mon Aug 9 2021

The National Weather Service in Birmingham has issued a

* Severe Thunderstorm Warning for...
  Central Talladega County in east central Alabama...

* Until 515 PM CDT.

* At 443 PM CDT, a severe thunderstorm was located over Talladega,
  moving northeast at 15 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Talladega, Lincoln, Munford, Waldo, Grant Town, Talladega
  Superspeedway, Honda Manufacturing Of Alabama, Talladega Municipal
  Airport, Logan Martin Lake, Eastaboga, Camp Mac, Jackson Shoals,
  Ironaton, Jenifer and Howells Cove.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3354 8585 3350 8589 3350 8590 3349 8590
      3331 8609 3343 8629 3349 8624 3350 8623
      3353 8622 3354 8619 3356 8620 3365 8613
      3360 8600 3359 8599 3359 8597
TIME...MOT...LOC 2143Z 225DEG 13KT 3344 8612 

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

$$

25/Owen

1 follow-up statement

228 
WWUS54 KBMX 092205
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
505 PM CDT Mon Aug 9 2021

ALC121-092215-
/O.EXP.KBMX.SV.W.0140.000000T0000Z-210809T2215Z/
Talladega AL-
505 PM CDT Mon Aug 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL TALLADEGA COUNTY WILL
EXPIRE AT 515 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

LAT...LON 3354 8585 3350 8589 3350 8590 3349 8590
      3331 8609 3343 8629 3349 8624 3350 8623
      3353 8622 3354 8619 3356 8620 3365 8613
      3360 8600 3359 8599 3359 8597
TIME...MOT...LOC 2205Z 225DEG 13KT 3348 8607 

$$

25/Owen

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 12:21 PM CDT	Special Weather Statement	BMX	Perry	24 min
Aug 9, 12:25 PM CDT	Special Weather Statement	BMX	Clay	35 min
Aug 9, 12:42 PM CDT	Special Weather Statement	BMX	Etowah	33 min
Aug 9, 1:13 PM CDT	Special Weather Statement	BMX	Bibb	32 min
Aug 9, 1:49 PM CDT	Special Weather Statement	BMX	Dallas	41 min
Aug 9, 1:51 PM CDT	Special Weather Statement	BMX	Cherokee	39 min
Aug 9, 2:05 PM CDT	Special Weather Statement	BMX	DeKalb	40 min
Aug 9, 2:28 PM CDT	Special Weather Statement	BMX	Randolph	32 min
Aug 9, 2:30 PM CDT	Special Weather Statement	BMX	Cherokee	30 min
Aug 9, 2:49 PM CDT	Special Weather Statement	BMX	Dallas	41 min
Aug 9, 3:02 PM CDT	Special Weather Statement	BMX	Chambers	28 min
Aug 9, 3:48 PM CDT	Special Weather Statement	BMX	Clay	27 min
Aug 9, 3:49 PM CDT	Special Weather Statement	BMX	Chambers	26 min
Aug 9, 4:00 PM CDT	Special Weather Statement	BMX	Talladega	30 min
Aug 9, 4:21 PM CDT	Special Weather Statement	BMX	Talladega	24 min
Aug 9, 5:21 PM CDT	Special Weather Statement	BMX	Calhoun	39 min
Aug 9, 5:56 PM CDT	Special Weather Statement	BMX	Elmore	34 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.