Alert archive / Alabama / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 120, NWS Birmingham, AL

May 16, 2023Bibb County, Shelby County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at May 16, 2023, 1:43 PM CDT for Bibb County, Shelby County, Alabama. It was in force for 47 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: May 16, 2023, 1:43 PM CDT (18:43 UTC)
Expired: May 16, 2023, 2:30 PM CDT
In force: 47 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Bibb County, AL, Shelby County, AL

The radar

The Birmingham radar (KBMX), 12 km from the middle of the area, began a volume at 18:46 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, 6.7 hours before the alert went out and 224 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 469 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 651 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 May 16, 1:32 PM CDT, 11 minutes earlier.

Area forecast discussion, May 16, 1:32 PM CDT, 11 minutes before

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Hazardous weather outlook, May 16, 9:20 AM CDT, 4 hours 23 minutes before

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In the hours before

Special weather statement, May 16, 1:23 PM CDT, 20 minutes before

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Special weather statement, May 16, 1:27 PM CDT, 16 minutes before

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Special weather statement, May 16, 1:36 PM CDT, 7 minutes before

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Special weather statement, May 16, 1:37 PM CDT, 6 minutes before

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Local storm report, May 16, 1:38 PM CDT, 5 minutes before

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Local storm report, May 16, 1:40 PM CDT, 3 minutes before

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The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 15, 7:04 PM CDT	Special Weather Statement	BMX	Chilton	41 min
May 16, 12:22 PM CDT	Special Weather Statement	BMX	Hale	38 min
May 16, 12:39 PM CDT	Special Weather Statement	BMX	Sumter	36 min
May 16, 12:55 PM CDT	Special Weather Statement	BMX	Hale	35 min
May 16, 12:58 PM CDT	Special Weather Statement	BMX	Hale	32 min
May 16, 1:14 PM CDT	Special Weather Statement	BMX	Shelby	31 min
May 16, 1:19 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Shelby	41 min
May 16, 1:23 PM CDT	Special Weather Statement	BMX	Greene	37 min
May 16, 1:27 PM CDT	Special Weather Statement	BMX	Bibb	33 min
May 16, 1:36 PM CDT	Special Weather Statement	BMX	Shelby	24 min
May 16, 1:37 PM CDT	Special Weather Statement	BMX	Marengo	38 min
May 16, 1:59 PM CDT	Special Weather Statement	BMX	Talladega	31 min
May 16, 2:02 PM CDT	Special Weather Statement	BMX	Perry	43 min
May 16, 2:11 PM CDT	Special Weather Statement	BMX	Chilton	34 min
May 16, 2:34 PM CDT	Special Weather Statement	BMX	Calhoun, Talladega	41 min
May 16, 2:57 PM CDT	Special Weather Statement	BMX	Coosa	33 min
May 16, 3:10 PM CDT	Special Weather Statement	BMX	Cleburne	50 min
May 16, 3:19 PM CDT	Special Weather Statement	BMX	Pickens	41 min
May 16, 3:28 PM CDT	Special Weather Statement	BMX	Marshall	32 min
May 16, 3:41 PM CDT	Special Weather Statement	BMX	Elmore	34 min
May 16, 3:46 PM CDT	Special Weather Statement	BMX	Greene	29 min
May 16, 3:51 PM CDT	Special Weather Statement	BMX	Chambers, Randolph, Tallapoosa	39 min
May 16, 4:05 PM CDT	Special Weather Statement	BMX	Marion	25 min
May 16, 4:15 PM CDT	Special Weather Statement	BMX	Elmore	45 min
May 16, 4:33 PM CDT	Special Weather Statement	BMX	Lee, Macon	42 min
May 16, 5:07 PM CDT	Special Weather Statement	BMX	Walker	53 min
May 16, 5:10 PM CDT	Special Weather Statement	BMX	Macon	50 min
May 16, 5:23 PM CDT	Special Weather Statement	BMX	Barbour, Bullock, Pike, Russell	52 min
May 16, 5:57 PM CDT	Special Weather Statement	BMX	Walker	48 min
May 16, 6:18 PM CDT	Special Weather Statement	BMX	Barbour, Bullock, Pike, Russell	42 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2023 Every 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.