Alert archive / Alabama / River Flood Warnings in 2021
River Flood Warning 37, NWS Birmingham, AL
NWS Birmingham, AL issued this river flood warning at May 4, 2021, 6:48 PM CDT for Bibb County, Jefferson County, Shelby County, Alabama. It was in force for 22 hr.
The area
The outline as issued.
The facts
- Issued
- May 4, 2021, 6:48 PM CDT (23:48 UTC)
- Expired
- May 5, 2021, 4:59 PM CDT
- In force
- 22 hr
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Flood severity
- Minor
Counties Bibb County, AL, Jefferson County, AL, Shelby County, AL
The radar
The Birmingham radar (KBMX), 23 km from the middle of the area, began a volume at 23:51 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 river
Written for the forecast point Cahaba River near Cahaba Heights (CHGA1). The gauge peaked at 19.93 ft at May 5, 2021, 4:00 AM CDT.
- Action stage
- 14 ft
- Minor stage
- 14 ft
- Moderate stage
- 22 ft
- Major stage
- 24 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 02423425, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
The text
As transmitted.
914
WGUS44 KBMX 042348
FLWBMX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Birmingham AL
648 PM CDT Tue May 4 2021
...The National Weather Service in Birmingham AL has issued a Flood
Warning for the following rivers in Alabama...
Cahaba River Near Cahaba Heights affecting Bibb, Jefferson and
Shelby Counties.
.Heavy rainfall of 3-6 inches has occurred since this morning over
the Cahaba River basin. A flood warning is now in effect for the
Cahaba River at Cahaba Heights.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
Another statement will be issued by Wednesday morning, or sooner if
conditions warrant.
&&
ALC007-073-117-051200-
/O.NEW.KBMX.FL.W.0037.210504T2348Z-210506T0110Z/
/CHGA1.1.ER.210504T2341Z.210505T0600Z.210505T1309Z.UU/
648 PM CDT Tue May 4 2021
The National Weather Service in Birmingham has issued a
* Flood Warning for
the Cahaba River Near Cahaba Heights.
* From this evening to Wednesday evening.
* At 6:30 PM CDT Tuesday the stage was 13.6 feet.
* Flood stage is 14.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise to a crest of 15.6 feet
just after midnight tonight. It will then fall below flood stage
tomorrow morning.
* Impact...At 17.0 feet, Flooding of some commercial property in the
area begins as stages continues to rise.
&&
LAT...LON 3340 8673 3336 8677 3333 8684 3335 8684
3340 8677 3342 8674
$$
40/Sizemore3 follow-up statements
687
WGUS84 KBMX 050221
FLSBMX
Flood Statement
National Weather Service Birmingham AL
921 PM CDT Tue May 4 2021
...The Flood Warning is extended for the following rivers in
Alabama...
Cahaba River Near Cahaba Heights affecting Bibb, Jefferson and
Shelby Counties.
.Flooding continues on the Cahaba River and a flood warning remains
in effect at Cahaba Heights.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
Another statement will be issued by Wednesday morning, or sooner if
conditions warrant.
&&
ALC007-073-117-051430-
/O.EXT.KBMX.FL.W.0037.000000T0000Z-210506T1653Z/
/CHGA1.1.ER.210504T2341Z.210505T1200Z.210506T0453Z.UU/
921 PM CDT Tue May 4 2021
...The Flood Warning is now in effect until late Thursday morning...
The Flood Warning continues for
the Cahaba River Near Cahaba Heights.
* Until Thursday morning.
* At 8:30 PM CDT Tuesday the stage was 17.9 feet.
* Flood stage is 14.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Forecast...The river is expected to rise to a crest of 21.6 feet
tomorrow morning. It will then fall below flood stage late
tomorrow evening.
* Impact...At 22.5 feet, Some residential flooding develops as the
river continues to rise.
&&
LAT...LON 3340 8673 3336 8677 3333 8684 3335 8684
3340 8677 3342 8674
$$
40/Sizemore897
WGUS84 KBMX 051458
FLSBMX
Flood Statement
National Weather Service Birmingham AL
958 AM CDT Wed May 5 2021
...The Flood Warning continues for the following rivers in Alabama...
Cahaba River Near Cahaba Heights affecting Bibb, Jefferson and
Shelby Counties.
.Flooding continues on the Cahaba River at Cahaba Heights and a
flood warning remains in effect.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
Another statement will be issued by this evening, or sooner if
conditions warrant.
&&
ALC007-073-117-060300-
/O.EXT.KBMX.FL.W.0037.000000T0000Z-210506T1540Z/
/CHGA1.1.ER.210504T2341Z.210505T0900Z.210506T0340Z.UU/
958 AM CDT Wed May 5 2021
...The Flood Warning is now in effect until late tomorrow morning...
The Flood Warning continues for
the Cahaba River Near Cahaba Heights.
* Until Thursday morning.
* At 8:30 AM CDT Wednesday the stage was 18.7 feet.
* Flood stage is 14.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Forecast...The river is expected to fall below flood stage late
this evening and continue falling to 2.3 feet early Monday morning.
* Impact...At 20.0 feet, Water overflows the yards of some homes
near the river.
&&
LAT...LON 3340 8673 3336 8677 3333 8684 3335 8684
3340 8677 3342 8674
$$
08140
WGUS84 KBMX 052159
FLSBMX
Flood Statement
National Weather Service Birmingham AL
459 PM CDT Wed May 5 2021
...The Flood Warning is cancelled for the following rivers in
Alabama...
Cahaba River Near Cahaba Heights affecting Bibb, Jefferson and
Shelby Counties.
.The Cahaba River has fallen below flood stage, so the flood warning
has been cancelled.
ALC007-073-117-052300-
/O.CAN.KBMX.FL.W.0037.000000T0000Z-210505T2159Z/
/CHGA1.1.ER.210504T2341Z.210505T0900Z.210506T0340Z.UU/
459 PM CDT Wed May 5 2021
...The Flood Warning for the Cahaba River Near Cahaba Heights has
been cancelled...
The Flood Warning is cancelled for
the Cahaba River Near Cahaba Heights.
* At 4:30 PM CDT Wednesday the stage was 12.5 feet.
* Flood stage is 14.0 feet.
* Forecast...The river is expected to fall to 2.2 feet early Monday
afternoon.
&&
LAT...LON 3340 8673 3336 8677 3333 8684 3335 8684
3340 8677 3342 8674
$$The 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, 5:29 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 |
Nearby
River Flood Warnings in Alabama, 2021Every river 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.