Alert archive / Alabama / Flash Flood Warnings in 2021
Flash Flood Warning 8, NWS Birmingham, AL
NWS Birmingham, AL issued this flash flood warning at Mar 25, 2021, 5:50 PM CDT for 4 counties in Alabama. It was in force for 100 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, 5:50 PM CDT (22:50 UTC)
- Expired
- Mar 25, 2021, 7:30 PM CDT
- In force
- 100 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Chilton County, AL, Coosa County, AL, Shelby County, AL, Talladega County, AL
The radar
The Birmingham radar (KBMX), 5 km from the middle of the area, began a volume at 22:55 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, 10.8 hours before the alert went out and 6 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
- 54 J/kg
- Mixed-layer CIN
- -239 J/kg
- Mixed-layer LCL
- 507 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 613 m²/s²
- 0-3 km storm-relative helicity
- 713 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.6
The text
As transmitted.
708
WGUS54 KBMX 252250
FFWBMX
ALC021-037-117-121-260030-
/O.NEW.KBMX.FF.W.0008.210325T2250Z-210326T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
550 PM CDT Thu Mar 25 2021
The National Weather Service in Birmingham has issued a
* Flash Flood Warning for...
North Central Chilton County in central Alabama...
Southern Shelby County in central Alabama...
Northwestern Coosa County in east central Alabama...
Southwestern Talladega County in east central Alabama...
* Until 730 PM CDT.
* At 550 PM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Flash
flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Doppler radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Alabaster, Pelham, Calera, Chelsea, Montevallo, Childersburg,
Columbiana, Wilsonville, Talladega Springs, Vincent, Harpersville,
Westover, Wilton, Shelby County Airport, Lay Lake, Marble Valley,
American Village, University Of Montevallo, Shelby and Highway 145
and CR 46.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3315 8697 3342 8638 3339 8638 3340 8637
3333 8634 3302 8646 3300 8659 3303 8688
3304 8688 3306 8693 3308 8693 3308 8694
3314 8697
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
881 follow-up statement
891
WGUS74 KBMX 260034
FFSBMX
Flash Flood Statement
National Weather Service Birmingham AL
734 PM CDT Thu Mar 25 2021
ALC021-037-117-121-260044-
/O.EXP.KBMX.FF.W.0008.000000T0000Z-210326T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chilton AL-Coosa AL-Shelby AL-Talladega AL-
734 PM CDT Thu Mar 25 2021
...FLASH FLOOD WARNING HAS EXPIRED FOR NORTH CENTRAL CHILTON,
SOUTHERN SHELBY, NORTHWESTERN COOSA AND SOUTHWESTERN TALLADEGA
COUNTIES...
The heavy rain has ended. However, some areas and roads may still
see some ponding of water. Please continue to heed remaining road
closures.
LAT...LON 3315 8697 3342 8638 3339 8638 3340 8637
3333 8634 3302 8646 3300 8659 3303 8688
3304 8688 3306 8693 3308 8693 3308 8694
3314 8697
$$
88The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 24, 10:58 PM CDT | Wind Advisory | BMX | Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more | 24 hr |
| Mar 25, 1:43 AM CDT | Special Weather Statement | BMX | Pike | 47 min |
| Mar 25, 4:54 AM CDT | Special Weather Statement | BMX | Lee | 36 min |
| Mar 25, 7:45 AM CDT | Special Weather Statement | BMX | Marengo | 45 min |
| Mar 25, 7:48 AM CDT | Special Weather Statement | BMX | Tuscaloosa | 42 min |
| Mar 25, 8:46 AM CDT | Special Weather Statement | BMX | Jefferson, Tuscaloosa | 44 min |
| Mar 25, 8:53 AM CDT | Special Weather Statement | BMX | Marshall | 22 min |
| Mar 25, 9:19 AM CDT | Special Weather Statement | BMX | Blount | 41 min |
| Mar 25, 9:24 AM CDT | Areal Flood Advisory | BMX | Fayette, Walker, Winston | 3 hr |
| Mar 25, 9:28 AM CDT | Special Weather Statement | BMX | Jefferson | 47 min |
| Mar 25, 9:58 AM CDT | Severe Thunderstorm Warning | BMX | Jefferson, St. Clair | 32 min |
| Mar 25, 10:12 AM CDT | Areal Flood Advisory | BMX | Blount, Jefferson | 3 hr |
| Mar 25, 10:18 AM CDT | Severe Thunderstorm Warning | BMX | St. Clair | 13 min |
| Mar 25, 10:28 AM CDT | Special Weather Statement | BMX | Calhoun, Etowah, St. Clair | 47 min |
| Mar 25, 10:53 AM CDT | Special Weather Statement | BMX | Jefferson, Tuscaloosa, Walker | 37 min |
| Mar 25, 11:14 AM CDT | Severe Thunderstorm Warning | BMX | Blount, Jefferson, St. Clair, Walker | 61 min |
| Mar 25, 11:19 AM CDT | Severe Thunderstorm Warning | BMX | Calhoun, Cherokee, Cleburne | 15 min |
| Mar 25, 11:36 AM CDT | Tornado Warning | BMX | Greene, Hale | 54 min |
| Mar 25, 12:03 PM CDT | Severe Thunderstorm Warning | BMX | Blount, Calhoun, Etowah, Jefferson, St. Clair, Talladega | 72 min |
| Mar 25, 12:11 PM CDT | Tornado Warning | BMX | Bibb, Tuscaloosa | 64 min |
| Mar 25, 12:45 PM CDT | Special Weather Statement | BMX | Cherokee | 60 min |
| Mar 25, 12:47 PM CDT | Flash Flood Warning | BMX | Cherokee, Etowah | 6 hr |
| Mar 25, 12:53 PM CDT | Tornado Warning | BMX | Jefferson, Shelby | 67 min |
| Mar 25, 12:54 PM CDT | Areal Flood Advisory | BMX | Jefferson, St. Clair | 4 hr |
| Mar 25, 1:28 PM CDT | Tornado Warning | BMX | Pickens | 43 min |
| Mar 25, 1:46 PM CDT | Tornado Warning | BMX | St. Clair, Shelby, Talladega | 59 min |
| Mar 25, 1:57 PM CDT | Flash Flood Warning | BMX | Blount, Jefferson, St. Clair | 9 hr |
| Mar 25, 2:23 PM CDT | Tornado Warning | BMX | Calhoun | 67 min |
| Mar 25, 2:32 PM CDT | Flash Flood Warning | BMX | Fayette, Jefferson, Lamar, Marion, Pickens, Tuscaloosa and 2 more | 4 hr |
| Mar 25, 2:45 PM CDT | Tornado Warning | BMX | Fayette, Tuscaloosa, Walker | 15 min |
| Mar 25, 2:58 PM CDT | Tornado Warning | BMX | Cherokee, Etowah | 45 min |
| Mar 25, 3:11 PM CDT | Tornado Warning | BMX | Sumter | 37 min |
| Mar 25, 3:35 PM CDT | Tornado Warning | BMX | Greene | 55 min |
| Mar 25, 3:37 PM CDT | Tornado Warning | BMX | Sumter | 53 min |
| Mar 25, 3:44 PM CDT | Tornado Warning | BMX | Blount, Jefferson | 25 min |
| Mar 25, 3:59 PM CDT | Tornado Warning | BMX | Greene, Hale | 61 min |
| Mar 25, 4:10 PM CDT | Tornado Warning | BMX | Hale, Tuscaloosa | 10 min |
| Mar 25, 4:27 PM CDT | Special Weather Statement | BMX | Jefferson | 33 min |
| Mar 25, 4:33 PM CDT | Tornado Warning | BMX | Bibb, Perry | 57 min |
| Mar 25, 4:45 PM CDT | Tornado Warning | BMX | Jefferson | 18 min |
| Mar 25, 4:48 PM CDT | Special Weather Statement | BMX | Walker | 27 min |
| Mar 25, 4:55 PM CDT | Tornado Warning | BMX | St. Clair | 41 min |
| Mar 25, 5:05 PM CDT | Tornado Warning | BMX | Chilton, Shelby | 55 min |
| Mar 25, 5:16 PM CDT | Tornado Warning | BMX | Bibb | 29 min |
| Mar 25, 5:24 PM CDT | Tornado Warning | BMX | Calhoun, Etowah | 28 min |
| Mar 25, 5:29 PM CDT | Areal Flood Advisory | BMX | Chilton, Coosa, Shelby, Talladega | 21 min |
| Mar 25, 5:50 PM CDT | Tornado Warning | BMX | Shelby, Talladega | 23 min |
| Mar 25, 6:03 PM CDT | Special Weather Statement | BMX | Greene | 27 min |
| Mar 25, 6:15 PM CDT | Special Weather Statement | BMX | Fayette | 30 min |
| Mar 25, 6:30 PM CDT | Areal Flood Warning | BMX | Cherokee | 3 days |
Nearby
Flash Flood Warnings in Alabama, 2021Every flash flood 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.