Alert archive / Alabama / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 18, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Apr 20, 2024, 5:46 PM CDT for Macon County, Montgomery County, Alabama. It was in force for 16 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 20, 2024, 5:46 PM CDT (22:46 UTC)
- Expired
- Apr 20, 2024, 6:02 PM CDT
- In force
- 16 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Macon County, AL, Montgomery County, AL
The radar
The Maxwell AFB radar (KMXX), 30 km from the middle of the area, began a volume at 22:49 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 nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 10.8 hours before the alert went out and 125 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
- 453 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 761 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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 19, 6:29 PM CDT, 23 hours 17 minutes earlier.
Area forecast discussion, Apr 19, 6:29 PM CDT, 23 hours 17 minutes before
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</html>The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 7:04 PM CDT | Special Weather Statement | BMX | Cleburne | 41 min |
| Apr 19, 8:51 PM CDT | Areal Flood Advisory | BMX | Jefferson | 3 hr |
| Apr 20, 2:35 PM CDT | Severe Thunderstorm Warning | BMX | Montgomery, Pike | 22 min |
| Apr 20, 3:39 PM CDT | Special Weather Statement | BMX | Lee | 36 min |
| Apr 20, 4:41 PM CDT | Special Weather Statement | BMX | Macon | 34 min |
| Apr 20, 5:02 PM CDT | Special Weather Statement | BMX | Montgomery | 28 min |
| Apr 20, 5:28 PM CDT | Special Weather Statement | BMX | Montgomery | 32 min |
| Apr 20, 5:33 PM CDT | Special Weather Statement | BMX | Lee | 27 min |
| Apr 20, 6:46 PM CDT | Special Weather Statement | BMX | Lee | 29 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2024Every severe thunderstorm warning in 2024
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.