Alert archive / Alabama / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 102, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at May 4, 2021, 5:29 PM CDT for Autauga County, Chilton County, Lowndes County, Alabama. It was in force for 76 min. 9 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
- May 4, 2021, 5:29 PM CDT (22:29 UTC)
- Expired
- May 4, 2021, 6:45 PM CDT
- In force
- 76 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Autauga County, AL, Chilton County, AL, Lowndes County, AL
The radar
The Birmingham radar (KBMX), 82 km from the middle of the area, began a volume at 22:29 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 |
|---|---|---|---|
| May 4, 5:35 PM CDT | TSTM WND DMG | 1 Wsw Maplesville, AL | TREES BLOWN DOWN AT VARIOUS LOCATIONS IN SOUTHWEST CHILTON COUNTY. |
| May 4, 5:38 PM CDT | TORNADO | 1 S Maplesville, AL | MULTIPLE TREES AND POWER LINES DOWNED. ASSOCIATED WITH TDS ON RADAR. LIKELY TORNADO. |
| May 4, 5:50 PM CDT | TSTM WND DMG | Lomax, AL | TREES BLOWN DOWN AT VARIOUS LOCATIONS ACROSS CHILTON COUNTY. |
| May 4, 6:05 PM CDT | TSTM WND DMG | 2 Nne New Prospect, AL | MULTIPLE TREES DOWN ON I-65 SOUTHBOUND AT MILE MARKER 197. |
| May 4, 6:15 PM CDT | TSTM WND DMG | 3 Ese New Prospect, AL | TREES DOWN. |
| May 4, 6:15 PM CDT | TSTM WND DMG | Booth, AL | TREES DOWN. |
| May 4, 6:15 PM CDT | TSTM WND DMG | Mulberry, AL | TREES DOWN. |
| May 4, 6:17 PM CDT | TORNADO | 1 Nne Prattville, AL | WIND DAMAGE WAS PREVALENT ALONG A LINE OF STORMS THAT MOVED THROUGH AUTAUGA AND ELMORE COUNTIES, MAKING IT HARD TO DISTINGUISH BETWEEN STRAIGHT-LINE WIND DAMAGE AND TORNADIC DAMAGE; HOWEVER, A CORRIDOR OF ENHANCED DAMAGE, CO-LOCATED WITH A ROTATIONAL RADAR SIG |
| May 4, 6:21 PM CDT | TSTM WND DMG | Hayneville, AL | TREES BLOWN DOWN AT VARIOUS LOCATIONS ACROSS LOWNDES COUNTY. |
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 |
|---|---|---|---|
| May 4, 3:31 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 10.5 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.
- Mixed-layer CAPE
- 2158 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 569 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 145 m²/s²
- 0-3 km storm-relative helicity
- 195 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 7.3
The text
As transmitted.
587
WUUS54 KBMX 042229
SVRBMX
ALC001-021-085-042345-
/O.NEW.KBMX.SV.W.0102.210504T2229Z-210504T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Birmingham AL
529 PM CDT Tue May 4 2021
The National Weather Service in Birmingham has issued a
* Severe Thunderstorm Warning for...
Autauga County in central Alabama...
Chilton County in central Alabama...
Lowndes County in south central Alabama...
* Until 645 PM CDT.
* At 528 PM CDT, severe thunderstorms were located along a line
extending from Brierfield Ironworks Park to 6 miles west of
Dannelly Reservoir, moving east at 60 mph.
HAZARD...60 mph wind gusts. This line of storms has a history of
producing wind damage.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Prattville, Millbrook, Calera, Clanton, Jemison, Fort Deposit,
Mosses, Hayneville, Thorsby, Deatsville, Autaugaville, White Hall,
Maplesville, Gordonville, Billingsley, Lowndesboro, Benton, Gap Of
The Mountain, Autauga County Airport and Verbena.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central,
south central and east central Alabama.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3205 8686 3205 8691 3222 8691 3223 8681
3227 8686 3236 8681 3264 8692 3307 8687
3307 8661 3306 8662 3302 8653 3282 8646
3275 8639 3241 8641 3241 8646 3234 8650
3228 8648 3224 8641 3196 8641 3196 8686
TIME...MOT...LOC 2228Z 268DEG 53KT 3303 8690 3218 8732
HAIL...<.75IN
WIND...60MPH
$$
89^GSatterwhite4 follow-up statements
031
WWUS54 KBMX 042249
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
549 PM CDT Tue May 4 2021
ALC001-021-085-042345-
/O.CON.KBMX.SV.W.0102.000000T0000Z-210504T2345Z/
Autauga AL-Chilton AL-Lowndes AL-
549 PM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR AUTAUGA...CHILTON AND LOWNDES COUNTIES...
At 549 PM CDT, severe thunderstorms were located along a line
extending from Lay Lake to 8 miles southwest of Belknap, moving east
at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Prattville, Millbrook, Calera, Clanton, Jemison, Fort Deposit,
Mosses, Hayneville, Thorsby, Deatsville, Autaugaville, White Hall,
Maplesville, Gordonville, Billingsley, Lowndesboro, Benton, Gap Of
The Mountain, Autauga County Airport and Verbena.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central,
south central and east central Alabama.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3205 8686 3205 8691 3222 8691 3223 8681
3227 8686 3236 8681 3264 8692 3307 8687
3307 8661 3306 8662 3302 8653 3282 8646
3275 8639 3241 8641 3241 8646 3234 8650
3228 8648 3224 8641 3196 8641 3196 8686
TIME...MOT...LOC 2249Z 276DEG 46KT 3304 8655 3210 8708
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
89^GSatterwhite145
WWUS54 KBMX 042315
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
615 PM CDT Tue May 4 2021
ALC021-042325-
/O.CAN.KBMX.SV.W.0102.000000T0000Z-210504T2345Z/
Chilton AL-
615 PM CDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR CHILTON COUNTY IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for central,
south central and east central Alabama.
LAT...LON 3205 8686 3205 8691 3222 8691 3223 8681
3227 8686 3235 8681 3247 8686 3254 8675
3271 8671 3271 8642 3241 8641 3241 8646
3234 8650 3228 8648 3224 8641 3196 8641
3196 8686
TIME...MOT...LOC 2315Z 272DEG 42KT 3276 8640 3202 8672
$$
ALC001-085-042345-
/O.CON.KBMX.SV.W.0102.000000T0000Z-210504T2345Z/
Autauga AL-Lowndes AL-
615 PM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR AUTAUGA AND LOWNDES COUNTIES...
At 615 PM CDT, severe thunderstorms were located along a line
extending from near Welona to 8 miles west of Lowndes County Airport,
moving east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Prattville, Fort Deposit, Mosses, Hayneville, Autaugaville, White
Hall, Gordonville, Billingsley, Lowndesboro, Benton, Booth, Vida
Junction, Beechwood, Autauga County Airport, Mulberry, Marbury,
Lowndes County Airport, Logan, Calhoun and Robert F. Henry Lock And
Dam.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central,
south central and east central Alabama.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3205 8686 3205 8691 3222 8691 3223 8681
3227 8686 3235 8681 3247 8686 3254 8675
3271 8671 3271 8642 3241 8641 3241 8646
3234 8650 3228 8648 3224 8641 3196 8641
3196 8686
TIME...MOT...LOC 2315Z 272DEG 42KT 3276 8640 3202 8672
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
89^GSatterwhite131
WWUS54 KBMX 042323
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
623 PM CDT Tue May 4 2021
ALC001-085-042345-
/O.CON.KBMX.SV.W.0102.000000T0000Z-210504T2345Z/
Autauga AL-Lowndes AL-
623 PM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR EASTERN AUTAUGA AND LOWNDES COUNTIES...
At 623 PM CDT, severe thunderstorms were located along a line
extending from near Deatsville to 6 miles northeast of Hayneville to
9 miles west of Lowndes County Airport, moving east at 60 mph.
HAZARD...60 mph wind gusts. This line of storms has a history of
producing high winds and wind damage.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Prattville, Fort Deposit, Mosses, Hayneville, Autaugaville, White
Hall, Gordonville, Lowndesboro, Benton, Booth, Beechwood, Autauga
County Airport, Marbury, Lowndes County Airport, Logan, Calhoun,
Robert F. Henry Lock And Dam, Clover Hill, Farmersville and Manack.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central,
south central and east central Alabama.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3232 8683 3240 8673 3271 8656 3271 8642
3241 8641 3241 8646 3234 8650 3228 8648
3224 8641 3196 8641 3196 8686 3205 8686
3205 8691 3222 8691 3223 8681 3227 8686
TIME...MOT...LOC 2323Z 276DEG 50KT 3266 8638 3225 8650 3197 8675
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
89^GSatterwhite326
WWUS54 KBMX 042331 RRA
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
631 PM CDT Tue May 4 2021
ALC001-042341-
/O.CAN.KBMX.SV.W.0102.000000T0000Z-210504T2345Z/
Autauga AL-
631 PM CDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN AUTAUGA COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for central and
south central Alabama.
LAT...LON 3205 8686 3205 8690 3217 8667 3236 8657
3237 8654 3234 8654 3234 8650 3228 8648
3224 8641 3196 8641 3196 8686
TIME...MOT...LOC 2331Z 275DEG 49KT 3236 8645 3213 8649 3185 8676
$$
ALC085-042345-
/O.CON.KBMX.SV.W.0102.000000T0000Z-210504T2345Z/
Lowndes AL-
631 PM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR LOWNDES COUNTY...
At 631 PM CDT, severe thunderstorms were located along a line
extending from near Hunter to 6 miles northwest of Davenport to 8
miles west of Greenville, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Fort Deposit, Mosses, Hayneville, Gordonville, Lowndesboro, Lowndes
County Airport, Beechwood, Logan, Calhoun, Manack, Letohatchee, Mount
Willing, Clover Hill and Fostoria.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central and
south central Alabama.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3205 8686 3205 8690 3217 8667 3236 8657
3237 8654 3234 8654 3234 8650 3228 8648
3224 8641 3196 8641 3196 8686
TIME...MOT...LOC 2331Z 275DEG 49KT 3236 8645 3213 8649 3185 8676
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
89^GSatterwhiteThe office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 7:02 PM CDT | Severe Thunderstorm Warning | BMX | Elmore, Montgomery | 43 min |
| May 3, 7:13 PM CDT | Severe Thunderstorm Warning | BMX | Bibb, Chilton, Perry | 32 min |
| May 3, 7:25 PM CDT | Flash Flood Warning | BMX | Autauga, Elmore, Macon, Montgomery | 5 hr |
| May 3, 7:29 PM CDT | Areal Flood Advisory | BMX | Chambers, Lee, Macon, Tallapoosa | 2 hr |
| May 3, 7:40 PM CDT | Severe Thunderstorm Warning | BMX | Elmore, Macon, Montgomery | 47 min |
| May 3, 7:46 PM CDT | Special Weather Statement | BMX | Chilton | 44 min |
| May 3, 8:30 PM CDT | Special Weather Statement | BMX | Lee, Macon | 45 min |
| May 3, 8:36 PM CDT | Special Weather Statement | BMX | Chilton | 39 min |
| May 3, 8:51 PM CDT | Areal Flood Advisory | BMX | Bibb, Chilton, Perry | 3 hr |
| May 3, 8:59 PM CDT | Special Weather Statement | BMX | Russell | 46 min |
| May 3, 9:31 PM CDT | Special Weather Statement | BMX | Shelby | 59 min |
| May 4, 7:27 AM CDT | Special Weather Statement | BMX | Marion | 48 min |
| May 4, 7:57 AM CDT | Special Weather Statement | BMX | Lamar, Marion | 48 min |
| May 4, 9:07 AM CDT | Severe Thunderstorm Warning | BMX | Winston | 38 min |
| May 4, 10:26 AM CDT | Severe Thunderstorm Warning | BMX | Blount | 23 min |
| May 4, 10:59 AM CDT | Special Weather Statement | BMX | Walker | 31 min |
| May 4, 11:00 AM CDT | Areal Flood Advisory | BMX | Fayette, Lamar, Walker | 3 hr |
| May 4, 11:06 AM CDT | Areal Flood Advisory | BMX | Blount, Calhoun, Cherokee, Etowah, St. Clair | 3 hr |
| May 4, 11:12 AM CDT | Tornado Warning | BMX | Fayette, Tuscaloosa | 21 min |
| May 4, 11:25 AM CDT | Severe Thunderstorm Warning | BMX | Jefferson, Walker | 50 min |
| May 4, 11:45 AM CDT | Areal Flood Advisory | BMX | Jefferson | 2 hr |
| May 4, 11:49 AM CDT | Severe Thunderstorm Warning | BMX | Blount, Jefferson, St. Clair | 26 min |
| May 4, 12:03 PM CDT | Flash Flood Warning | BMX | Blount, Etowah, St. Clair | 117 min |
| May 4, 12:10 PM CDT | Flash Flood Warning | BMX | Jefferson | 7 hr |
| May 4, 12:14 PM CDT | Severe Thunderstorm Warning | BMX | Calhoun, St. Clair, Talladega | 46 min |
| May 4, 12:17 PM CDT | Severe Thunderstorm Warning | BMX | Jefferson, St. Clair, Shelby | 28 min |
| May 4, 12:35 PM CDT | Flash Flood Warning | BMX | Calhoun, Etowah, St. Clair, Talladega | 3 hr |
| May 4, 12:56 PM CDT | Severe Thunderstorm Warning | BMX | Calhoun, Cherokee, Cleburne, Talladega | 64 min |
| May 4, 1:15 PM CDT | Severe Thunderstorm Warning | BMX | Jefferson, Shelby | 30 min |
| May 4, 1:25 PM CDT | Tornado Warning | BMX | Cleburne | 24 min |
| May 4, 1:39 PM CDT | Flash Flood Warning | BMX | Jefferson, St. Clair, Shelby | 5 hr |
| May 4, 2:07 PM CDT | Areal Flood Warning | BMX | Blount, Calhoun, Cherokee, Etowah, St. Clair | 6 hr |
| May 4, 2:54 PM CDT | Areal Flood Advisory | BMX | Clay, Cleburne, Randolph, Shelby, Talladega | 3 hr |
| May 4, 3:50 PM CDT | Severe Thunderstorm Warning | BMX | Sumter | 55 min |
| May 4, 4:01 PM CDT | Flash Flood Warning | BMX | Shelby, Talladega | 3 hr |
| May 4, 4:05 PM CDT | Flash Flood Warning | BMX | Bibb, Tuscaloosa | 3 hr |
| May 4, 4:13 PM CDT | Severe Thunderstorm Warning | BMX | Tuscaloosa | 29 min |
| May 4, 4:20 PM CDT | Severe Thunderstorm Warning | BMX | Greene | 55 min |
| May 4, 4:30 PM CDT | Severe Thunderstorm Warning | BMX | Hale, Marengo | 63 min |
| May 4, 4:45 PM CDT | Special Weather Statement | BMX | Walker, Winston | 30 min |
| May 4, 5:00 PM CDT | Severe Thunderstorm Warning | BMX | Bibb, Chilton, Dallas, Perry | 75 min |
| May 4, 5:17 PM CDT | Flash Flood Warning | BMX | Jefferson, Shelby | 3 hr |
| May 4, 5:30 PM CDT | Tornado Warning | BMX | Chilton, Perry | 30 min |
| May 4, 5:38 PM CDT | Tornado Warning | BMX | Shelby | 12 min |
| May 4, 5:54 PM CDT | Severe Thunderstorm Warning | BMX | Coosa | 50 min |
| May 4, 5:59 PM CDT | Severe Thunderstorm Warning | BMX | Elmore | 61 min |
| May 4, 6:07 PM CDT | Severe Thunderstorm Warning | BMX | Montgomery | 68 min |
| May 4, 6:19 PM CDT | Severe Thunderstorm Warning | BMX | Tallapoosa | 56 min |
| May 4, 6:24 PM CDT | Tornado Warning | BMX | Elmore, Montgomery | 13 min |
| May 4, 6:37 PM CDT | Severe Thunderstorm Warning | BMX | Bullock, Macon, Pike | 83 min |
| May 4, 6:41 PM CDT | Severe Thunderstorm Warning | BMX | Chambers, Lee | 61 min |
| May 4, 6:48 PM CDT | River Flood Warning | BMX | Bibb, Jefferson, Shelby | 22 hr |
Nearby
Severe Thunderstorm Warnings in Alabama, 2021Every 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.