Alert archive / Alabama / Flood Watches in 2020
Flood Watch 1, NWS Birmingham, AL
NWS Birmingham, AL issued this flood watch at Jan 1, 2020, 3:35 AM CST for 14 counties in Alabama. It took effect at Jan 2, 2020, 12:00 PM CST. It was in force for 30 hr.
The area
The counties it named.
The facts
- Issued
- Jan 1, 2020, 3:35 AM CST (09:35 UTC)
- In effect from
- Jan 2, 2020, 12:00 PM CST
- Expired
- Jan 3, 2020, 6:00 PM CST
- In force
- 30 hr
- Issued by
- NWS Birmingham, AL
- Flood severity
- None
Counties Blount County, AL, Cherokee County, AL, Etowah County, AL, Fayette County, AL, Greene County, AL, Jefferson County, AL, Lamar County, AL, Marion County, AL, Pickens County, AL, St. Clair County, AL, Sumter County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL
The radar
The Birmingham radar (KBMX), 70 km from the middle of the area, began a volume at 09:34 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 00:00Z, 9.6 hours before the alert went out and 257 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2129 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flood watch 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 flood watch went out at Jan 1, 3:20 AM CST, 15 minutes earlier.
Area forecast discussion, Jan 1, 3:20 AM CST, 15 minutes before
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</html>Hazardous weather outlook, Jan 1, 3:13 AM CST, 22 minutes before
Hazardous Weather Outlook National Weather Service Birmingham AL 313 AM CST Wed Jan 1 2020 ALZ011>015-017>050-021215- 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- 313 AM CST Wed Jan 1 2020 This Hazardous Weather Outlook is for the counties served by the National Weather Service office in Birmingham. .DAY ONE...Today and Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. An extended period of moderate to perhaps locally heavy rainfall is expected Thursday afternoon through Friday afternoon along and northwest of Interstate 59. Rainfall amounts of 2 to 4 inches could result in flooding of low-lying and poor drainage areas. .SPOTTER INFORMATION STATEMENT... Activation of storm spotters and emergency management may be needed Thursday afternoon through Friday afternoon.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 1, 7:54 AM CST | River Flood Warning | BMX | Greene, Hale, Marengo, Pickens, Sumter | 21 days |
| Jan 1, 7:58 AM CST | River Flood Warning | BMX | Greene, Hale, Marengo, Sumter | 21 days |
| Jan 1, 8:03 AM CST | River Flood Warning | BMX | Jefferson, Tuscaloosa, Walker | 50 hr |
| Jan 1, 8:20 AM CST | River Flood Warning | BMX | Greene, Hale, Marengo, Sumter, Tuscaloosa | 4 days |
| Jan 1, 8:23 AM CST | River Flood Warning | BMX | Greene, Hale, Marengo | 8 days |
| Jan 1, 8:26 AM CST | River Flood Warning | BMX | Greene, Hale, Marengo, Sumter | 9 days |
Nearby
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.