Alert archive / Alabama / Areal Flood Advisories in 2021
Areal Flood Advisory 183, NWS Birmingham, AL
NWS Birmingham, AL issued this areal flood advisory at Oct 5, 2021, 3:49 PM CDT for Marion County, Alabama. It was in force for 116 min.
The area
The counties it named.
The facts
- Issued
- Oct 5, 2021, 3:49 PM CDT (20:49 UTC)
- Expired
- Oct 5, 2021, 5:45 PM CDT
- In force
- 116 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
County Marion County, AL
The radar
The Columbus AFB radar (KGWX), 49 km from the middle of the area, began a volume at 20:50 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
Little Rock, AR (KLZK), launched 12:00Z, 8.8 hours before the alert went out and 204 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
- 46 J/kg
- Mixed-layer CIN
- -236 J/kg
- Mixed-layer LCL
- 1385 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Birmingham, AL wrote its last area forecast discussion before this areal flood advisory went out at Oct 5, 2:42 PM CDT, 1 hour 7 minutes earlier.
Area forecast discussion, Oct 5, 2:42 PM CDT, 1 hour 7 minutes before
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</html>Hazardous weather outlook, Oct 5, 3:38 PM CDT, 11 minutes before
Hazardous Weather Outlook National Weather Service Birmingham AL 338 PM CDT Tue Oct 5 2021 ALZ011>015-017>050-062345- Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Cherokee- Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega- Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa- Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon- Bullock-Lee-Russell-Pike-Barbour- 338 PM CDT Tue Oct 5 2021 This Hazardous Weather Outlook is for the counties served by the National Weather Service office in Birmingham. .DAY ONE...Outlook through Tonight. Periods of heavy rainfall are possible across portions of Central Alabama. This could lead to flash flooding of low lying or poor drainage areas. Minor flooding is occurring along portions of the Chattahoochee River. Please see the latest river statements from the National Weather Service in Atlanta for more details. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Additional heavy rainfall is possible across much of Central Alabama through Wednesday evening. This could lead to flash flooding of low lying or poor drainage areas. Minor flooding may continue into Wednesday along portions of the Chattahoochee River. Please see the latest river statements from the National Weather Service in Atlanta for more details. .SPOTTER INFORMATION STATEMENT... Activation of storm spotters and emergency management may be needed through Wednesday.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 4, 11:46 PM CDT | Areal Flood Advisory | BMX | Chambers, Lee | 3 hr |
| Oct 5, 12:38 AM CDT | Flash Flood Warning | BMX | Chambers, Lee | 3 hr |
| Oct 5, 3:27 AM CDT | Areal Flood Advisory | BMX | Barbour, Bullock, Lee, Macon, Pike, Russell | 3 hr |
| Oct 5, 5:23 AM CDT | Flash Flood Warning | BMX | Chambers, Lee | 5 hr |
| Oct 5, 5:27 AM CDT | Areal Flood Advisory | BMX | Jefferson, Shelby | 3 hr |
| Oct 5, 6:25 AM CDT | Flash Flood Warning | BMX | Shelby | 2 hr |
| Oct 5, 7:53 AM CDT | Areal Flood Advisory | BMX | Bibb, Hale, Tuscaloosa | 3 hr |
| Oct 5, 4:09 PM CDT | Areal Flood Advisory | BMX | Tuscaloosa | 3 hr |
| Oct 5, 5:25 PM CDT | Special Weather Statement | BMX | Lamar | 35 min |
| Oct 5, 6:43 PM CDT | Areal Flood Advisory | BMX | Jefferson, Shelby | 6 hr |
Nearby
Areal Flood Advisories in Alabama, 2021Every areal flood advisory 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.