Alert archive / Alabama / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 105, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Apr 1, 2023, 2:49 AM CDT for Fayette County, Lamar County, Marion County, Alabama. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 1, 2023, 2:49 AM CDT (07:49 UTC)
- Expired
- Apr 1, 2023, 3:45 AM CDT
- In force
- 56 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Fayette County, AL, Lamar County, AL, Marion County, AL
The radar
The Columbus AFB radar (KGWX), 39 km from the middle of the area, began a volume at 07:49 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 31, 11:59 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 00:00Z, 7.8 hours before the alert went out and 130 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
- 169 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 1105 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 362 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
What forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Apr 1, 2:45 AM CDT, 4 minutes earlier.
Area forecast discussion, Apr 1, 2:45 AM CDT, 4 minutes before
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</html>Hazardous weather outlook, Mar 31, 3:38 PM CDT, 11 hours 11 minutes before
Hazardous Weather Outlook National Weather Service Birmingham AL 338 PM CDT Fri Mar 31 2023 ALZ011>015-017>050-012345- 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 Fri Mar 31 2023 This Hazardous Weather Outlook is for the counties served by the National Weather Service office in Birmingham. .DAY ONE...Outlook through Tonight. Severe storms are likely tonight into early tomorrow morning, with the highest potential along and north of I-20. Threats include tornadoes, damaging winds, and quarter size hail. For the southeast areas, the threats mentioned above are less likely but can not be ruled out. Windy conditions are expected tonight. Wind gusts of 35 to 40 mph are possible outside of thunderstorm activity. The winds will occur across the northern half of Central Alabama. Lesser wind gusts will occur south. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Isolated severe storms may continue into Saturday morning across southeast portions of Central Alabama. Damaging winds and an isolated tornado are possible. Breezy conditions will continue through midday Saturday with wind gusts of 35 to 40 mph possible across the northern half of Central Alabama. .SPOTTER INFORMATION STATEMENT... Activation of storm spotters and emergency management will be needed tonight into Saturday morning.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 1, 1:55 AM CDT | Tornado Warning | BMX | Marion | 65 min |
| Apr 1, 2:44 AM CDT | Tornado Warning | BMX | Winston | 32 min |
| Apr 1, 3:23 AM CDT | Severe Thunderstorm Warning | BMX | Walker, Winston | 52 min |
| Apr 1, 4:07 AM CDT | Special Weather Statement | BMX | Blount | 53 min |
| Apr 1, 4:13 AM CDT | Special Weather Statement | BMX | Walker | 32 min |
| Apr 1, 4:44 AM CDT | Special Weather Statement | BMX | DeKalb | 31 min |
| Apr 1, 4:51 AM CDT | Special Weather Statement | BMX | Etowah | 39 min |
| Apr 1, 5:11 AM CDT | Severe Thunderstorm Warning | BMX | Calhoun, Cherokee, Etowah | 49 min |
| Apr 1, 5:52 AM CDT | Special Weather Statement | BMX | Calhoun | 53 min |
| Apr 1, 6:11 AM CDT | Special Weather Statement | BMX | St. Clair | 34 min |
| Apr 1, 6:55 AM CDT | Special Weather Statement | BMX | Autauga, Dallas | 35 min |
| Apr 1, 7:27 AM CDT | Special Weather Statement | BMX | Autauga, Elmore | 48 min |
| Apr 1, 7:45 AM CDT | Special Weather Statement | BMX | Dallas | 45 min |
| Apr 1, 8:04 AM CDT | Special Weather Statement | BMX | Macon | 41 min |
| Apr 1, 10:12 AM CDT | Special Weather Statement | BMX | Bullock | 33 min |
| Apr 1, 10:42 AM CDT | Special Weather Statement | BMX | Russell | 33 min |
| Apr 1, 11:52 AM CDT | Tornado Warning | BMX | Barbour | 15 min |
| Apr 1, 2:45 PM CDT | Wind Advisory | BMX | Fayette, Lamar, Marion, Pickens, Tuscaloosa | 4 hr |
Nearby
Severe Thunderstorm Warnings in Alabama, 2023Every severe thunderstorm warning in 2023
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.