Alert archive / Alabama / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 101, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at May 4, 2021, 5:00 PM CDT for 4 counties in Alabama. It was in force for 75 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
- May 4, 2021, 5:00 PM CDT (22:00 UTC)
- Expired
- May 4, 2021, 6:15 PM CDT
- In force
- 75 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bibb County, AL, Chilton County, AL, Dallas County, AL, Perry County, AL
The radar
The Birmingham radar (KBMX), 87 km from the middle of the area, began a volume at 22:01 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, 5:17 PM CDT | TSTM WND DMG | Marion, AL | TREES BLOWN DOWN AT VARIOUS LOCATIONS ACROSS PERRY COUNTY. SOME ROOF DAMAGE IN AREAS AS WELL. |
| May 4, 5:19 PM CDT | TORNADO | 4 N Sprott, AL | AN EF-0 TORNADO TRACK WAS CONFIRMED BY NWS BMX SURVEY TEAM FROM NORTHEAST PERRY COUNTY TO SOUTHWEST CHILTON COUNTY. THE TORNADO BEGAN ALONG J MITCHELL ROAD AND MOVED EAST-NORTHEASTWARD BEFORE TAKING A RIGHT-HAND JOG AND ENDING JUST SOUTH OF MAPLESVILLE. DAMAGE |
| 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, 5:45 PM CDT | TSTM WND DMG | Selma, AL | TREES BLOWN DOWN AT VARIOUS LOCATIONS ACROSS DALLAS COUNTY. A BUSINESS IN SELMA HAD ITS ROOF PEELED OFF. |
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, 10.0 hours before the alert went out and 88 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.
772
WUUS54 KBMX 042200
SVRBMX
ALC007-021-047-105-042315-
/O.NEW.KBMX.SV.W.0101.210504T2200Z-210504T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Birmingham AL
500 PM CDT Tue May 4 2021
The National Weather Service in Birmingham has issued a
* Severe Thunderstorm Warning for...
Southwestern Chilton County in central Alabama...
Perry County in central Alabama...
Southern Bibb County in central Alabama...
Dallas County in south central Alabama...
* Until 615 PM CDT.
* At 500 PM CDT, severe thunderstorms were located along a line
extending from near Low Gap to near Dixons Mill, moving east at 55
mph.
HAZARD...60 mph wind gusts. Wind damage has been reported with
this line of storms.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Selma, Brent, Valley Grande, Marion, Centreville, Uniontown,
Selmont-West Selmont, Maplesville, Orrville, Newbern, Bogue Chitto,
Vaiden, Parnell, Tyler, Dannelly Reservoir, Paul M Grist State
Park, Low Gap, Mertz, Dallas Lake and Talladega National Forest.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central,
south central, southwestern and west central Alabama.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3220 8732 3226 8747 3231 8747 3231 8752
3265 8753 3266 8747 3283 8747 3284 8742
3300 8742 3299 8688 3266 8689 3265 8692
3248 8689 3243 8683 3236 8681 3227 8686
3223 8681 3222 8691 3205 8691 3205 8718
TIME...MOT...LOC 2200Z 279DEG 47KT 3297 8747 3201 8785
HAIL...<.75IN
WIND...60MPH
$$
89^GSatterwhite3 follow-up statements
736
WWUS54 KBMX 042217
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
517 PM CDT Tue May 4 2021
ALC007-021-047-105-042315-
/O.CON.KBMX.SV.W.0101.000000T0000Z-210504T2315Z/
Chilton AL-Perry AL-Bibb AL-Dallas AL-
517 PM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHWESTERN CHILTON...PERRY...SOUTHERN BIBB AND DALLAS
COUNTIES...
At 517 PM CDT, severe thunderstorms were located along a line
extending from near Brent to Pine Hill, moving east at 55 mph.
HAZARD...60 mph wind gusts. Wind damage has been reported with this
line of storms.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Selma, Brent, Valley Grande, Marion, Centreville, Uniontown,
Selmont-West Selmont, Maplesville, Orrville, Newbern, Bogue Chitto,
Vaiden, Parnell, Tyler, Dannelly Reservoir, Paul M Grist State Park,
Low Gap, Mertz, Dallas Lake and Talladega National Forest.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central,
south central, southwestern and west central Alabama.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3220 8732 3226 8747 3231 8747 3231 8752
3265 8753 3266 8747 3283 8747 3284 8742
3300 8742 3299 8688 3266 8689 3265 8692
3248 8689 3243 8683 3236 8681 3227 8686
3223 8681 3222 8691 3205 8691 3205 8718
TIME...MOT...LOC 2217Z 270DEG 47KT 3294 8721 3198 8759
HAIL...<.75IN
WIND...60MPH
$$
89^GSatterwhite983
WWUS54 KBMX 042245
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
545 PM CDT Tue May 4 2021
ALC007-105-042255-
/O.CAN.KBMX.SV.W.0101.000000T0000Z-210504T2315Z/
Perry AL-Bibb AL-
545 PM CDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR PERRY AND SOUTHERN BIBB
COUNTIES 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 3220 8732 3228 8747 3231 8742 3243 8742
3248 8738 3249 8711 3260 8704 3282 8702
3284 8689 3266 8689 3266 8692 3254 8691
3236 8681 3233 8685 3231 8684 3227 8686
3223 8681 3222 8691 3206 8691 3205 8718
TIME...MOT...LOC 2245Z 260DEG 46KT 3305 8679 3206 8712
$$
ALC021-047-042315-
/O.CON.KBMX.SV.W.0101.000000T0000Z-210504T2315Z/
Chilton AL-Dallas AL-
545 PM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHWESTERN CHILTON AND DALLAS COUNTIES...
At 545 PM CDT, severe thunderstorms were located along a line
extending from near Calera to 9 miles southeast of Dannelly
Reservoir, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Selma, Valley Grande, Selmont-West Selmont, Orrville, Bogue Chitto,
Gardner Island, Parnell, Tyler, Central Mills, Old Cahaba Park,
Dannelly Reservoir, Dallas County Horse Arena, Belknap, Paul M Grist
State Park, Dallas Lake, Memorial Stadium, Marion Junction,
Burnsville, Potter Station and Stanton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central and
south central Alabama.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3220 8732 3228 8747 3231 8742 3243 8742
3248 8738 3249 8711 3260 8704 3282 8702
3284 8689 3266 8689 3266 8692 3254 8691
3236 8681 3233 8685 3231 8684 3227 8686
3223 8681 3222 8691 3206 8691 3205 8718
TIME...MOT...LOC 2245Z 260DEG 46KT 3305 8679 3206 8712
HAIL...<.75IN
WIND...60MPH
$$
89^GSatterwhite064
WWUS54 KBMX 042314
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
614 PM CDT Tue May 4 2021
ALC021-047-042323-
/O.EXP.KBMX.SV.W.0101.000000T0000Z-210504T2315Z/
Chilton AL-Dallas AL-
614 PM CDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CHILTON AND
DALLAS COUNTIES WILL EXPIRE AT 615 PM CDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with these thunderstorms.
A Tornado Watch remains in effect until 1000 PM CDT for central and
south central Alabama.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Birmingham.
LAT...LON 3220 8732 3228 8747 3231 8742 3243 8742
3248 8738 3249 8711 3260 8704 3282 8702
3284 8689 3266 8689 3266 8692 3254 8691
3236 8681 3233 8685 3231 8684 3227 8686
3223 8681 3222 8691 3206 8691 3205 8718
TIME...MOT...LOC 2313Z 279DEG 47KT 3299 8637 3200 8671
$$
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, 5:17 PM CDT | Flash Flood Warning | BMX | Jefferson, Shelby | 3 hr |
| May 4, 5:29 PM CDT | Severe Thunderstorm Warning | BMX | Autauga, Chilton, Lowndes | 76 min |
| 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.