Alert archive / Alabama / Areal Flood Advisories in 2021
Areal Flood Advisory 166, NWS Birmingham, AL
NWS Birmingham, AL issued this areal flood advisory at Sep 18, 2021, 5:29 PM CDT for Russell County, Alabama. It was in force for 108 min.
The area
The counties it named.
The facts
- Issued
- Sep 18, 2021, 5:29 PM CDT (22:29 UTC)
- Expired
- Sep 18, 2021, 7:17 PM CDT
- In force
- 108 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
County Russell County, AL
The radar
The Maxwell AFB radar (KMXX), 63 km from the middle of the area, began a volume at 22:32 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.5 hours before the alert went out and 136 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
- 269 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 796 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 11:00 PM CDT | Areal Flood Advisory | BMX | Tallapoosa | 2 hr |
| Sep 18, 8:46 AM CDT | Areal Flood Advisory | BMX | Jefferson, Shelby | 3 hr |
| Sep 18, 9:40 AM CDT | Flash Flood Warning | BMX | Jefferson, Shelby | 3 hr |
| Sep 18, 12:29 PM CDT | Areal Flood Advisory | BMX | Tallapoosa | 5 hr |
| Sep 18, 12:44 PM CDT | Areal Flood Advisory | BMX | Tuscaloosa | 11 min |
| Sep 18, 12:55 PM CDT | Flash Flood Warning | BMX | Tuscaloosa | 110 min |
| Sep 18, 1:10 PM CDT | Flash Flood Watch | BMX | Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more | 54 hr |
| Sep 18, 1:33 PM CDT | Areal Flood Advisory | BMX | Etowah | 3 hr |
| Sep 18, 1:52 PM CDT | Areal Flood Advisory | BMX | Bibb, Dallas, Hale, Marengo, Perry | 3 hr |
| Sep 18, 2:53 PM CDT | Flash Flood Warning | BMX | Tuscaloosa | 112 min |
| Sep 18, 3:11 PM CDT | Areal Flood Advisory | BMX | Elmore, Montgomery | 4 hr |
| Sep 18, 3:25 PM CDT | Areal Flood Advisory | BMX | Chambers, Lee | 3 hr |
| Sep 18, 4:21 PM CDT | Areal Flood Advisory | BMX | Bullock, Montgomery, Pike | 3 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.