Alert archive / Alabama / Flash Flood Warnings in 2021
Flash Flood Warning 17, NWS Birmingham, AL
NWS Birmingham, AL issued this flash flood warning at May 4, 2021, 12:10 PM CDT for Jefferson County, Alabama. It was in force for 7 hr. 16 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, 12:10 PM CDT (17:10 UTC)
- Expired
- May 4, 2021, 7:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Flood severity
- None
County Jefferson County, AL
The radar
The Birmingham radar (KBMX), 51 km from the middle of the area, began a volume at 17:10 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, 1:09 PM CDT | FLASH FLOOD | 2 Wsw Homewood, AL | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2 WSW HOMEWOOD. FLOODING ON COBB STREET. |
| May 4, 1:16 PM CDT | FLASH FLOOD | 1 Sw Homewood, AL | EXTENSIVE FLASH FLOODING IN HOMEWOOD INCLUDING ONGOING SWIFT WATER RESCUES. |
| May 4, 1:17 PM CDT | FLASH FLOOD | Uab Campus, AL | EXTENSIVE FLASH FLOODING ALONG 14ST NEAR UAB. RELAYED BY SOCIAL MEDIA. |
| May 4, 1:19 PM CDT | FLASH FLOOD | 1 Ese Kingston, AL | FLOODING ON 50TH STREET AND 1ST AVENUE NORTH IN CRESTWOOD, WATER COVERING ROAD. |
| May 4, 1:19 PM CDT | FLASH FLOOD | 2 Ssw Kingston, AL | FLASH FLOODING ALONG CLAIRMONT AVENUE. RELAYED VIA SOCIAL MEDIA. |
| May 4, 1:20 PM CDT | FLASH FLOOD | 1 E Uab Campus, AL | FLOODING ON MAGNOLIA AVENUE SOUTH NEAR FIVE POINTS. |
| May 4, 1:21 PM CDT | FLASH FLOOD | 1 Nne Uab Campus, AL | ONE FOOT OF WATER OVER THE ROAD ON 4TH AVENUE SOUTH IN DOWNTOWN. |
| May 4, 1:46 PM CDT | FLASH FLOOD | 1 Sse Vulcan Park, AL | FLASH FLOODING REPORTED AT THE VALLEY HOTEL IN HOMEWOOD. |
| May 4, 1:51 PM CDT | FLASH FLOOD | 1 Ne Uab Campus, AL | FLASH FLOODING OCCURRING ALONG THE STREET IN FRONT OF NEWKS EATERY - DOWNTOWN BIRMINGHAM. |
| May 4, 2:05 PM CDT | FLASH FLOOD | 1 Wsw Ruffner Mountain, AL | OPORTO MADRID BLVD IN CRESTWOOD NEST TO FAMILY LEISURE IS FLOODED WITH A STALLED CAR. |
| May 4, 2:07 PM CDT | FLASH FLOOD | 1 Ese Vulcan Park, AL | FLOODING ON CULVER ROAD IN MOUNTAIN BROOK VILLIAGE. |
| May 4, 2:20 PM CDT | FLASH FLOOD | 1 Ssw Mountain Brook, AL | FLASH FLOODING REPORTED AT THE CANTERBURY UNITED METHODIST CHURCH MOUNTAIN BROOK. |
| May 4, 2:27 PM CDT | FLASH FLOOD | 1 Nw Kingston, AL | FLOODING AT TALLAPOOSA BLVD AND INTERSTATE 20. |
| May 4, 3:05 PM CDT | FLASH FLOOD | 1 Nw Kingston, AL | FLASH FLOODING BEING REPORTED AT THE INTERSECTION OF HIGHWAY 79 AND I-20/59. |
| May 4, 5:10 PM CDT | FLASH FLOOD | Uab Campus, AL | SIGNIFICANT FLASH FLOODING IN DOWNTOWN BIRMINGHAM ON THE UAB CAMPUS NEAR THE INTERSECTION OF 6TH AVENUE AND 12TH STREET. |
| May 4, 5:30 PM CDT | FLASH FLOOD | 1 Ssw Homewood, AL | RESIDENTS BEING EVACUATED OUT OF THE RUE MAISON APARTMENTS DUE TO FLASH FLOODING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 5.2 hours before the alert went out and 50 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.
921
WGUS54 KBMX 041710
FFWBMX
ALC073-041845-
/O.NEW.KBMX.FF.W.0017.210504T1710Z-210504T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
1210 PM CDT Tue May 4 2021
The National Weather Service in Birmingham has issued a
* Flash Flood Warning for...
Jefferson County in central Alabama...
* Until 145 PM CDT.
* At 1210 PM CDT, Doppler radar 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.
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...
Birmingham, Hoover, Vestavia Hills, Bessemer, Homewood, Mountain
Brook, Trussville, Hueytown, Gardendale, Irondale, Leeds, Moody,
Fairfield, Fultondale, Sumiton, Center Point, Pleasant Grove,
Clay, Pinson and Tarrant.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3356 8654 3329 8708 3329 8712 3336 8723
3342 8725 3346 8733 3347 8733 3347 8729
3350 8729 3350 8726 3354 8719 3360 8720
3363 8709 3365 8706 3377 8702 3379 8696
3382 8695 3384 8676 3377 8665 3376 8655
FLASH FLOOD...RADAR INDICATED
$$
882 follow-up statements
808
WGUS54 KBMX 041824
FFWBMX
ALC073-042000-
/O.EXT.KBMX.FF.W.0017.000000T0000Z-210504T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
124 PM CDT Tue May 4 2021
The National Weather Service in Birmingham has extended the
* Flash Flood Warning for...
Jefferson County in central Alabama...
* Until 300 PM CDT.
* At 124 PM CDT, Emergency Management reported thunderstorms
producing heavy rain across the warned area. Between 2 and 3
inches of rain have fallen. Flash flooding is already occurring.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Emergency management.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Birmingham, Hoover, Vestavia Hills, Bessemer, Homewood, Mountain
Brook, Trussville, Hueytown, Gardendale, Irondale, Leeds, Moody,
Fairfield, Fultondale, Sumiton, Center Point, Pleasant Grove,
Clay, Pinson and Tarrant.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses
as well as other drainage areas and low lying spots.
&&
LAT...LON 3356 8654 3329 8708 3329 8712 3336 8723
3342 8725 3346 8733 3347 8733 3347 8729
3350 8729 3350 8726 3354 8719 3360 8720
3363 8709 3365 8706 3377 8702 3379 8696
3382 8695 3384 8676 3377 8665 3376 8655
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
40/Sizemore177
WGUS54 KBMX 041939
FFWBMX
ALC073-050000-
/O.EXT.KBMX.FF.W.0017.000000T0000Z-210505T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
239 PM CDT Tue May 4 2021
The National Weather Service in Birmingham has extended the
* Flash Flood Warning for...
Jefferson County in central Alabama...
* Until 700 PM CDT.
* At 239 PM CDT, Emergency Management reported thunderstorms
producing heavy rain across the warned area. Between 2 and 3
inches of rain have fallen. Widespread Flash flooding is already
occurring.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Emergency management.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Birmingham, Hoover, Vestavia Hills, Bessemer, Homewood, Mountain
Brook, Trussville, Hueytown, Gardendale, Irondale, Leeds, Moody,
Fairfield, Fultondale, Sumiton, Center Point, Pleasant Grove,
Clay, Pinson and Tarrant.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses
as well as other drainage areas and low lying spots.
&&
LAT...LON 3356 8654 3329 8708 3329 8712 3336 8723
3342 8725 3346 8733 3347 8733 3347 8729
3350 8729 3350 8726 3354 8719 3360 8720
3363 8709 3365 8706 3377 8702 3379 8696
3382 8695 3384 8676 3377 8665 3376 8655
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
40/SizemoreThe 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, 12:14 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, 5:29 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
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.