Alert archive / Alabama / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 100, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at May 4, 2021, 4:30 PM CDT for Hale County, Marengo County, Alabama. It was in force for 63 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, 4:30 PM CDT (21:30 UTC)
- Expired
- May 4, 2021, 5:33 PM CDT
- In force
- 63 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hale County, AL, Marengo County, AL
The radar
The Birmingham radar (KBMX), 124 km from the middle of the area, began a volume at 21:35 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, 4:56 PM CDT | TSTM WND DMG | Demopolis, AL | TREES DOWN ON HOME ON SOUTH STRAWBERRY ST. VIA SOCIAL MEDIA. |
| May 4, 4:57 PM CDT | TSTM WND DMG | 3 Sse Harper Hill, AL | LARGE TREES SNAPPED. |
| May 4, 5:01 PM CDT | TSTM WND DMG | 2 E Greensboro, AL | WIDESPREAD TREES DOWNED AND POWER LINES DOWNED ALONG HIGHWAY 14 IN HALE COUNTY. |
| May 4, 5:01 PM CDT | TSTM WND DMG | 2 Ese Greensboro Muni A, AL | DAMAGE TO A HOME ON HWY 69, SOUTH OF GREENSBORO. MANY TREES SNAPPED AT SAME LOCATION. |
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, 9.5 hours before the alert went out and 124 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.
782
WUUS54 KBMX 042130
SVRBMX
ALC065-091-042245-
/O.NEW.KBMX.SV.W.0100.210504T2130Z-210504T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Birmingham AL
430 PM CDT Tue May 4 2021
The National Weather Service in Birmingham has issued a
* Severe Thunderstorm Warning for...
Marengo County in southwestern Alabama...
Hale County in west central Alabama...
* Until 545 PM CDT.
* At 429 PM CDT, severe thunderstorms were located along a line
extending from near West Greene to near Butler, moving east at 50
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...
Demopolis, Greensboro, Linden, Jefferson, Moundville, Thomaston,
Akron, Sweet Water, Newbern, Myrtlewood, Faunsdale, Dayton,
Nanafalia, Consul, Magnolia, Sawyerville, Wayne, Miller, Vineland
and Arcola.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central,
southwestern and west central Alabama.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3200 8811 3217 8801 3228 8802 3230 8795
3228 8793 3229 8793 3243 8804 3259 8774
3275 8781 3276 8787 3290 8781 3301 8771
3300 8742 3286 8742 3265 8753 3231 8752
3231 8748 3213 8752 3213 8762 3199 8767
TIME...MOT...LOC 2129Z 265DEG 42KT 3298 8806 3214 8817
HAIL...<.75IN
WIND...60MPH
$$
89^GSatterwhite3 follow-up statements
740
WWUS54 KBMX 042145
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
445 PM CDT Tue May 4 2021
ALC065-091-042245-
/O.CON.KBMX.SV.W.0100.000000T0000Z-210504T2245Z/
Marengo AL-Hale AL-
445 PM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR MARENGO AND HALE COUNTIES...
At 445 PM CDT, severe thunderstorms were located along a line
extending from near Knoxville to near Nanafalia, moving east at 50
mph.
HAZARD...60 mph wind gusts. Wind damage has been reported with this
line of storms.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Demopolis, Greensboro, Linden, Jefferson, Moundville, Thomaston,
Akron, Sweet Water, Newbern, Myrtlewood, Faunsdale, Dayton,
Nanafalia, Consul, Magnolia, Sawyerville, Wayne, Miller, Vineland and
Arcola.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central,
southwestern and west central Alabama.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3200 8811 3217 8801 3228 8802 3230 8795
3228 8793 3229 8793 3243 8804 3259 8774
3275 8781 3276 8787 3290 8781 3301 8771
3300 8742 3286 8742 3265 8753 3231 8752
3231 8748 3213 8752 3213 8762 3199 8767
TIME...MOT...LOC 2145Z 265DEG 42KT 3300 8785 3216 8796
HAIL...<.75IN
WIND...60MPH
$$
89^GSatterwhite758
WWUS54 KBMX 042220
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
520 PM CDT Tue May 4 2021
ALC065-042229-
/O.CAN.KBMX.SV.W.0100.000000T0000Z-210504T2245Z/
Hale AL-
520 PM CDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR HALE 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
southwestern Alabama.
LAT...LON 3200 8794 3248 8773 3248 8753 3231 8752
3231 8748 3227 8749 3227 8751 3225 8752
3213 8752 3213 8762 3199 8767
TIME...MOT...LOC 2219Z 266DEG 44KT 3248 8751 3200 8767
$$
ALC091-042245-
/O.CON.KBMX.SV.W.0100.000000T0000Z-210504T2245Z/
Marengo AL-
520 PM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR EASTERN MARENGO COUNTY...
At 519 PM CDT, severe thunderstorms were located along a line
extending from near Uniontown to near Vineland, moving east at 50
mph.
HAZARD...60 mph wind gusts. Wind damage has been reported with this
storm.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Linden, Thomaston, Sweet Water, Faunsdale, Dayton, Freddie Jones
Field, Shawnee, Consul, Magnolia, Wayne, Surginer, Miller, Dixons
Mill, Vineland, Octagon, Clayhill, Nicholsville and Calvary.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central and
southwestern Alabama.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3200 8794 3248 8773 3248 8753 3231 8752
3231 8748 3227 8749 3227 8751 3225 8752
3213 8752 3213 8762 3199 8767
TIME...MOT...LOC 2219Z 266DEG 44KT 3248 8751 3200 8767
HAIL...<.75IN
WIND...60MPH
$$
89^GSatterwhite743
WWUS54 KBMX 042233
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
533 PM CDT Tue May 4 2021
ALC091-042243-
/O.CAN.KBMX.SV.W.0100.000000T0000Z-210504T2245Z/
Marengo AL-
533 PM CDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MARENGO COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for central and
southwestern Alabama.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Birmingham.
LAT...LON 3200 8794 3248 8773 3248 8753 3231 8752
3231 8748 3227 8749 3227 8751 3225 8752
3213 8752 3213 8762 3199 8767
TIME...MOT...LOC 2232Z 265DEG 42KT 3249 8732 3201 8748
$$
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, 4:45 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, 5:29 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.