Alert archive / Alabama / Flash Flood Warnings in 2021
Flash Flood Warning 41, NWS Birmingham, AL
NWS Birmingham, AL issued this flash flood warning at Jul 23, 2021, 6:39 PM CDT for Tuscaloosa County, Alabama. It was in force for 2 hr. 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
- Jul 23, 2021, 6:39 PM CDT (23:39 UTC)
- Expired
- Jul 23, 2021, 8:46 PM CDT
- In force
- 2 hr
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Flood severity
- None
County Tuscaloosa County, AL
The radar
The Birmingham radar (KBMX), 73 km from the middle of the area, began a volume at 23:40 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 |
|---|---|---|---|
| Jul 23, 6:39 PM CDT | FLASH FLOOD | 1 N University Mall, AL | TRAFFIC CAMERA SHOWS DEEP WATER AT THE INTERSECTION OF MCFARLAND BLVD AND UNIVERSITY BLVD WITH AT LEAST ONE VEHICLE STALLED. |
| Jul 23, 6:45 PM CDT | FLASH FLOOD | 1 Se Bryant-Denny Stadi, AL | REPORT OF FLOODED VEHICLES AND FLOODED ROADWAY IN THE VICINITY OF COLEMAN COLISEUM. |
| Jul 23, 6:55 PM CDT | FLASH FLOOD | University Mall, AL | SEVERAL PUBLIC REPORTS OF SIGNIFICANT FLOODING ALONG PARTS OF MCFARLAND BLVD WITH VEHICLES STALLED. |
| Jul 23, 7:00 PM CDT | FLASH FLOOD | 1 Sse Bryant-Denny Stad, AL | FLASH FLOODING IN SEVERAL LOCATIONS ACROSS THE CITY OF TUSCALOOSA. SEVERAL VEHICLES ARE STALLED AFTER DRIVING INTO FLOODED ROADWAYS. |
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, 11.7 hours before the alert went out and 72 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
- 1133 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 596 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
971
WGUS54 KBMX 232339
FFWBMX
ALC125-240245-
/O.NEW.KBMX.FF.W.0041.210723T2339Z-210724T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
639 PM CDT Fri Jul 23 2021
The National Weather Service in Birmingham has issued a
* Flash Flood Warning for...
South Central Tuscaloosa County in west central Alabama...
* Until 945 PM CDT.
* At 639 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. The expected rainfall rate is 2 to 4 inches in 1
hour. Additional rainfall amounts of 1 to 3 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Tuscaloosa, Northport, Bryant Denny Stadium, University Mall,
McFarland Mall, Tuscaloosa Amphitheater, Tuscaloosa Regional
Airport, University Of Alabama Quad, Taylorville, Stillman
College, Oliver Lock And Dam, Palmore Park, Cottondale and Fosters
Boat Landing.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3326 8762 3326 8758 3323 8752 3319 8748
3319 8743 3317 8739 3314 8747 3314 8757
3312 8763 3311 8768 3317 8763 3321 8761
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2-4 INCHES IN 1 HOUR
$$
40/Sizemore2 follow-up statements
209
WGUS74 KBMX 240019
FFSBMX
Flash Flood Statement
National Weather Service Birmingham AL
719 PM CDT Fri Jul 23 2021
ALC125-240245-
/O.CON.KBMX.FF.W.0041.000000T0000Z-210724T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Tuscaloosa AL-
719 PM CDT Fri Jul 23 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM CDT THIS
EVENING FOR SOUTH CENTRAL TUSCALOOSA COUNTY...
At 719 PM CDT, Emergency Management reported thunderstorms producing
heavy rain in City of Tuscaloosa. Between 2 and 3 inches of rain
have fallen. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Emergency management reported.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Tuscaloosa, Northport, University Mall, McFarland Mall, Bryant
Denny Stadium, Tuscaloosa Amphitheater, University Of Alabama
Quad, Taylorville, Stillman College, Oliver Lock And Dam, Palmore
Park and Cottondale.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3324 8758 3324 8754 3323 8752 3319 8748
3319 8743 3317 8740 3314 8747 3314 8757
3318 8763 3321 8761
FLASH FLOOD...OBSERVED
$$
40/Sizemore022
WGUS74 KBMX 240146
FFSBMX
Flash Flood Statement
National Weather Service Birmingham AL
846 PM CDT Fri Jul 23 2021
ALC125-240156-
/O.CAN.KBMX.FF.W.0041.000000T0000Z-210724T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Tuscaloosa AL-
846 PM CDT Fri Jul 23 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHERN TUSCALOOSA COUNTY...
The heavy rain has ended. Flash Flooding is no longer expected to
pose an immediate threat. Please continue to heed remaining road
closures.
LAT...LON 3323 8752 3319 8748 3319 8746 3317 8746
3314 8754 3314 8757 3317 8757 3317 8761
3320 8761 3322 8757
$$
40/SizemoreThe office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 8:13 PM CDT | Special Weather Statement | BMX | Macon | 47 min |
| Jul 22, 8:48 PM CDT | Areal Flood Advisory | BMX | Elmore, Tallapoosa | 3 hr |
| Jul 23, 2:21 PM CDT | Special Weather Statement | BMX | Elmore | 24 min |
| Jul 23, 2:55 PM CDT | Special Weather Statement | BMX | Macon | 35 min |
| Jul 23, 4:52 PM CDT | Areal Flood Advisory | BMX | Jefferson, Shelby | 3 hr |
| Jul 23, 5:09 PM CDT | Special Weather Statement | BMX | Fayette | 36 min |
| Jul 23, 5:46 PM CDT | Areal Flood Advisory | BMX | Fayette | 119 min |
| Jul 23, 6:32 PM CDT | Areal Flood Advisory | BMX | Tuscaloosa | 118 min |
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.