Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 20, NWS Birmingham, AL

March 25, 2021Bibb County, Tuscaloosa County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 25, 2021, 7:34 PM CDT for Bibb County, Tuscaloosa County, Alabama. It was in force for 23 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: Mar 25, 2021, 7:34 PM CDT (00:34 UTC)
Expired: Mar 25, 2021, 7:57 PM CDT
In force: 23 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Bibb County, AL, Tuscaloosa County, AL

The radar

The Birmingham radar (KBMX), 44 km from the middle of the area, began a volume at 00:36 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 watch it was issued in

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

Issued	Product	Office	Lasted
Mar 25, 11:26 AM CDT	Tornado Watch PDS	SPC	9 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.6 hours before the alert went out and 44 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: 1313 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 662 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 341 m²/s²
0-3 km storm-relative helicity: 334 m²/s²
Significant tornado parameter: 3.1
Supercell composite: 13.2

Open this sounding in Storm Lab

The text

As transmitted.

070 
WUUS54 KBMX 260034
SVRBMX
ALC007-125-260115-
/O.NEW.KBMX.SV.W.0020.210326T0034Z-210326T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Birmingham AL
734 PM CDT Thu Mar 25 2021

The National Weather Service in Birmingham has issued a

* Severe Thunderstorm Warning for...
  Southeastern Tuscaloosa County in west central Alabama...
  Central Bibb County in central Alabama...

* Until 815 PM CDT.

* At 733 PM CDT, severe thunderstorms were located along a line
  extending from 6 miles southeast of Shelton State Community College
  to 6 miles east of Evansville, moving northeast at 75 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...
  Centreville, Lake View, Coaling, Vance, Woodstock, West Blocton,
  Tannehill Ironworks State Park, Low Gap, Mertz, Mercedes Benz Of
  Alabama, Eoline, North Bibb, Bucksville, Marvel, Hagler,
  Duncanville, Green Pond, Pearson, Caffee Junction and Hebron.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for central and
west central Alabama.

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

&&

LAT...LON 3308 8755 3330 8713 3328 8707 3325 8706
      3325 8703 3317 8703 3316 8697 3311 8697
      3287 8735 3288 8742 3300 8742 3301 8759
TIME...MOT...LOC 0033Z 237DEG 66KT 3306 8748 3281 8765 

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

32/Davis

2 follow-up statements

284 
WWUS54 KBMX 260050
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
750 PM CDT Thu Mar 25 2021

ALC007-125-260115-
/O.CON.KBMX.SV.W.0020.000000T0000Z-210326T0115Z/
Tuscaloosa AL-Bibb AL-
750 PM CDT Thu Mar 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTHEASTERN TUSCALOOSA AND NORTHERN BIBB COUNTIES...

At 750 PM CDT, a severe thunderstorm was located near Vance, or 14
miles northwest of Centreville, moving northeast at 75 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...
Lake View, Coaling, Vance, Woodstock, West Blocton, Tannehill
Ironworks State Park, Mercedes Benz Of Alabama, North Bibb,
Bucksville, Marvel, Green Pond, Caffee Junction, Hebron, I 20 Rest
Area Near Tuscaloosa and Cedar Cove.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 100 AM CDT for central and
west central Alabama.

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

&&

LAT...LON 3316 8739 3330 8713 3328 8707 3325 8706
      3325 8703 3317 8703 3316 8697 3311 8697
      3305 8728 3305 8736 3308 8740
TIME...MOT...LOC 0050Z 236DEG 65KT 3314 8726 

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

32/Davis

217 
WWUS54 KBMX 260057
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
757 PM CDT Thu Mar 25 2021

ALC007-125-260107-
/O.CAN.KBMX.SV.W.0020.000000T0000Z-210326T0115Z/
Tuscaloosa AL-Bibb AL-
757 PM CDT Thu Mar 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TUSCALOOSA AND
NORTHERN BIBB COUNTIES IS CANCELLED...
                
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 has been cancelled.

A Tornado Watch remains in effect until 100 AM CDT for central and
west central Alabama.

LAT...LON 3316 8739 3330 8713 3328 8707 3325 8706
      3325 8703 3317 8703 3316 8697 3311 8697
      3305 8728 3305 8736 3308 8740
TIME...MOT...LOC 0056Z 237DEG 66KT 3322 8712 

$$

32/Davis

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 25, 7:04 PM CDT	Special Weather Statement	BMX	Calhoun	26 min
Mar 25, 7:07 PM CDT	Tornado Warning	BMX	Marengo	24 min
Mar 25, 7:10 PM CDT	Special Weather Statement	BMX	Hale	50 min
Mar 25, 7:16 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale	32 min
Mar 25, 7:17 PM CDT	Areal Flood Advisory	BMX	Calhoun, Cherokee, Cleburne	14 min
Mar 25, 7:31 PM CDT	Flash Flood Warning	BMX	Calhoun, Cherokee, Cleburne	3 hr
Mar 25, 7:48 PM CDT	Special Weather Statement	BMX	Jefferson	27 min
Mar 25, 8:28 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, St. Clair	28 min
Mar 25, 8:33 PM CDT	Severe Thunderstorm Warning	BMX	Chilton	42 min
Mar 25, 8:51 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Etowah, St. Clair	25 min
Mar 25, 8:58 PM CDT	Severe Thunderstorm Warning	BMX	Coosa	49 min
Mar 25, 9:01 PM CDT	River Flood Warning	BMX	Bibb, Jefferson, Shelby	24 hr
Mar 25, 9:04 PM CDT	Tornado Warning	BMX	Chilton, Coosa	32 min
Mar 25, 9:21 PM CDT	River Flood Warning	BMX	Jefferson, Tuscaloosa, Walker	12 hr
Mar 25, 9:23 PM CDT	River Flood Warning	BMX	Jefferson, Tuscaloosa, Walker	60 hr
Mar 25, 9:41 PM CDT	River Flood Warning	BMX	Greene, Hale, Tuscaloosa	24 hr
Mar 25, 9:44 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Tuscaloosa	60 hr
Mar 25, 9:47 PM CDT	River Flood Warning	BMX	Sumter	12 hr
Mar 25, 9:49 PM CDT	River Flood Warning	BMX	Greene, Pickens, Sumter	5 days
Mar 25, 9:51 PM CDT	Tornado Warning	BMX	Chambers, Clay, Randolph, Tallapoosa	54 min
Mar 25, 11:20 PM CDT	Areal Flood Warning	BMX	Blount, Jefferson, St. Clair	6 hr
Mar 25, 11:55 PM CDT	River Flood Warning	BMX	Calhoun, Cherokee, Etowah, St. Clair	58 hr
Mar 26, 5:26 AM CDT	River Flood Warning	BMX	Chilton, Coosa, Elmore, Shelby, Talladega	4 days
Mar 26, 5:32 AM CDT	Areal Flood Warning	BMX	Cherokee	6 days

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.