Alert archive / Alabama / River Flood Warnings in 2021

River Flood Warning 40, NWS Birmingham, AL

May 4, 20215 counties in Alabama

NWS Birmingham, AL issued this river flood warning at May 4, 2021, 9:23 PM CDT for 5 counties in Alabama. It took effect at May 5, 2021, 7:21 AM CDT. It was in force for 20 hr.

The area

The outline as issued.

The facts

Issued: May 4, 2021, 9:23 PM CDT (02:23 UTC)
In effect from: May 5, 2021, 7:21 AM CDT
Expired: May 6, 2021, 3:14 AM CDT
In force: 20 hr
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Flood severity: Minor

Counties Chilton County, AL, Coosa County, AL, Elmore County, AL, Shelby County, AL, Talladega County, AL

The radar

The Birmingham radar (KBMX), 37 km from the middle of the area, began a volume at 02:24 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 Coosa River at Childersburg (CHLA1). The gauge peaked at 19.91 ft at May 5, 2021, 11:00 AM CDT.

Action stage: 402 ft
Minor stage: 402 ft
Moderate stage: 407 ft
Major stage: 410 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 02407000, 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.

085 
WGUS44 KBMX 050223
FLWBMX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Birmingham AL
923 PM CDT Tue May 4 2021

...The National Weather Service in Birmingham AL has issued a Flood 
Warning for the following rivers in Alabama...

  Coosa River At Childersburg affecting Coosa, Chilton, Elmore, 
  Talladega and Shelby Counties.

.Heavy rainfall over the past 24 hours has led to water level rises 
along the Coosa River basin. A flood warning is now in effect for 
the Coosa River at Childersburg.

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.

&&


ALC021-037-051-117-121-051430-
/O.NEW.KBMX.FL.W.0040.210505T1221Z-210507T0052Z/
/CHLA1.1.ER.210505T1221Z.210505T1800Z.210506T1251Z.NO/
923 PM CDT Tue May 4 2021

The National Weather Service in Birmingham has issued a

* Flood Warning for
  the Coosa River At Childersburg.
* From Wednesday morning to Thursday evening.
* At 8:45 PM CDT Tuesday the stage was 399.3 feet.
* Flood stage is 402.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage 
  tomorrow morning to a crest of 403.6 feet early tomorrow 
  afternoon. It will then fall below flood stage Thursday morning.
* Impact...At 402.0 feet, Flooding of low lying areas begins. At 404 
  feet flooding of some low lying roads in the area begins...and the 
  yards of some homes near the river become flooded.


&&

LAT...LON 3333 8632 3320 8643 3322 8648 3328 8645
      3329 8639 3335 8637

$$

40/Sizemore

3 follow-up statements

530 
WGUS84 KBMX 051504
FLSBMX

Flood Statement
National Weather Service Birmingham AL
1004 AM CDT Wed May 5 2021

...The Flood Warning continues for the following rivers in Alabama...

  Coosa River At Childersburg affecting Coosa, Chilton, Elmore, 
  Talladega and Shelby Counties.

.Flooding continues on the Coosa River at Childersburg 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.

&&


ALC021-037-051-117-121-060315-
/O.EXT.KBMX.FL.W.0040.000000T0000Z-210507T0000Z/
/CHLA1.1.ER.210505T0900Z.210505T1800Z.210506T1200Z.NO/
1004 AM CDT Wed May 5 2021

...The Flood Warning is now in effect until tomorrow evening...

The Flood Warning continues for
  the Coosa River At Childersburg.
* Until Thursday evening.
* At 8:45 AM CDT Wednesday the stage was 402.4 feet.
* Flood stage is 402.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Forecast...The river is expected to rise to a crest of 402.8 feet 
  this evening. It will then fall below flood stage during the day 
  Thursday.
* Impact...At 402.0 feet, Flooding of low lying areas begins. At 404 
  feet flooding of some low lying roads in the area begins...and the 
  yards of some homes near the river become flooded.


&&

LAT...LON 3333 8632 3320 8643 3322 8648 3328 8645
      3329 8639 3335 8637

$$

08

910 
WGUS84 KBMX 060059
FLSBMX

Flood Statement
National Weather Service Birmingham AL
759 PM CDT Wed May 5 2021

...The Flood Warning is extended for the following rivers in 
Alabama...

  Coosa River At Logan Martin Dam affecting Coosa, Chilton, Shelby, 
  Talladega and St. Clair Counties.

...The Flood Warning continues for the following rivers in Alabama...

  Coosa River At Childersburg affecting Coosa, Chilton, Elmore, 
  Talladega and Shelby Counties.

.Flooding continues on the Coosa River 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 Thursday morning, or sooner if 
conditions warrant.

&&


ALC021-037-051-117-121-061300-
/O.EXT.KBMX.FL.W.0040.000000T0000Z-210506T1501Z/
/CHLA1.1.ER.210505T0900Z.210505T1515Z.210506T0301Z.NO/
759 PM CDT Wed May 5 2021

...The Flood Warning is now in effect until late tomorrow morning...

The Flood Warning continues for
  the Coosa River At Childersburg.
* Until Thursday morning.
* At 6:45 PM CDT Wednesday the stage was 402.1 feet.
* Flood stage is 402.0 feet.
* Minor flooding is occurring.
* Forecast...The river is expected to fall below flood stage late 
  this evening and continue falling to 396.9 feet Monday evening.
* Impact...At 402.0 feet, Flooding of low lying areas begins. At 404 
  feet flooding of some low lying roads in the area begins...and the 
  yards of some homes near the river become flooded.


&&

LAT...LON 3333 8632 3320 8643 3322 8648 3328 8645
      3329 8639 3335 8637

$$

ALC021-037-115-117-121-061300-
/O.EXT.KBMX.FL.W.0047.210506T0100Z-210507T2200Z/
/CCSA1.1.ER.210506T0100Z.210506T1200Z.210507T1000Z.NO/
759 PM CDT Wed May 5 2021

...The Flood Warning is now in effect until Friday afternoon...

The Flood Warning continues for
  the Coosa River At Logan Martin Dam.
* Until Friday afternoon.
* At 7:00 PM CDT Wednesday the stage was 466.9 feet.
* Flood stage is 467.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage this 
  evening to a crest of 467.5 feet tomorrow morning. It will then 
  fall below flood stage early Friday morning.


&&

LAT...LON 3361 8616 3353 8616 3340 8633 3342 8636
      3351 8633 3361 8620

$$

469 
WGUS84 KBMX 060814
FLSBMX

Flood Statement
National Weather Service Birmingham AL
314 AM CDT Thu May 6 2021

...The Flood Warning is cancelled for the following rivers in 
Alabama...

  Coosa River At Childersburg affecting Coosa, Chilton, Elmore, 
  Talladega and Shelby Counties.

.The Coosa River at Childersburg has fallen below flood stage, so 
the flood warning has been cancelled.

ALC021-037-051-117-121-060915-
/O.CAN.KBMX.FL.W.0040.000000T0000Z-210506T0814Z/
/CHLA1.1.ER.210505T0900Z.210505T1515Z.210506T0301Z.NO/
314 AM CDT Thu May 6 2021

...The Flood Warning for the Coosa River At Childersburg has been 
cancelled...

The Flood Warning is cancelled for
  the Coosa River At Childersburg.
* At 2:45 AM CDT Thursday the stage was 401.8 feet.
* Flood stage is 402.0 feet.
* Forecast...The river is expected to fall to 396.9 feet Monday 
  evening.


&&

LAT...LON 3333 8632 3320 8643 3322 8648 3328 8645
      3329 8639 3335 8637

$$

32/Davis

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 4, 7:06 PM CDT	Areal Flood Warning	BMX	Bibb, Tuscaloosa	6 hr
May 4, 7:06 PM CDT	Severe Thunderstorm Warning	BMX	Russell	54 min
May 4, 7:12 PM CDT	Areal Flood Warning	BMX	Jefferson, St. Clair, Shelby	6 hr
May 4, 7:21 PM CDT	Severe Thunderstorm Warning	BMX	Barbour	54 min
May 4, 7:22 PM CDT	Areal Flood Warning	BMX	Shelby, Talladega	6 hr
May 4, 7:29 PM CDT	Areal Flood Advisory	BMX	Clay, Coosa, Tallapoosa	33 min
May 4, 8:02 PM CDT	Areal Flood Warning	BMX	Clay, Coosa, Tallapoosa	4 hr
May 4, 8:05 PM CDT	Areal Flood Advisory	BMX	Chambers, Randolph, Tallapoosa	4 hr
May 4, 9:21 PM CDT	River Flood Warning	BMX	Bibb, Dallas, Perry	47 hr
May 4, 9:21 PM CDT	River Flood Warning	BMX	Dallas, Perry	4 days
May 4, 9:40 PM CDT	River Flood Warning	BMX	Jefferson, Tuscaloosa, Walker	36 hr
May 4, 9:41 PM CDT	River Flood Warning	BMX	Greene, Pickens, Sumter	13 hr
May 4, 9:41 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo	3 days
May 5, 4:34 AM CDT	River Flood Warning	BMX	Chambers, Randolph, Tallapoosa	23 hr
May 5, 9:44 AM CDT	River Flood Warning	BMX	Elmore, Montgomery	59 hr
May 5, 9:54 AM CDT	River Flood Warning	BMX	Autauga, Dallas, Elmore, Lowndes, Montgomery	34 hr
May 5, 6:59 PM CDT	River Flood Warning	BMX	Chilton, Coosa, St. Clair, Shelby, Talladega	61 hr

Nearby

River Flood Warnings in Alabama, 2021 Every 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.