Alert archive / Alabama / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 138, NWS Birmingham, AL

May 17, 2025Chilton County, Coosa County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at May 17, 2025, 6:51 AM CDT for Chilton County, Coosa County, Alabama. It was in force for 24 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 17, 2025, 6:51 AM CDT (11:51 UTC)
Expired: May 17, 2025, 7:15 AM CDT
In force: 24 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Chilton County, AL, Coosa County, AL

The radar

The Birmingham radar (KBMX), 41 km from the middle of the area, began a volume at 11:52 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, 11.9 hours before the alert went out and 192 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: 1148 J/kg
Mixed-layer CIN: -125 J/kg
Mixed-layer LCL: 1473 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 185 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 7.2

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 17, 1:43 AM CDT, 5 hours 8 minutes earlier.

Area forecast discussion, May 17, 1:43 AM CDT, 5 hours 8 minutes before

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Hazardous weather outlook, May 16, 3:31 PM CDT, 15 hours 20 minutes before

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In the hours before

Local storm report, May 17, 6:21 AM CDT, 30 minutes before

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Local storm report, May 17, 6:25 AM CDT, 26 minutes before

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Special weather statement, May 17, 6:29 AM CDT, 22 minutes before

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Local storm report, May 17, 6:44 AM CDT, 7 minutes before

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Local storm report, May 17, 6:48 AM CDT, 3 minutes before

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Local storm report, May 17, 6:50 AM CDT, 1 minute 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 17, 2:27 AM CDT	Special Weather Statement	BMX	Fayette, Lamar, Marion, Walker, Winston	78 min
May 17, 2:37 AM CDT	Severe Thunderstorm Warning	BMX	Lamar	38 min
May 17, 3:43 AM CDT	Special Weather Statement	BMX	Fayette, Lamar, Pickens, Walker, Winston	62 min
May 17, 4:00 AM CDT	Severe Thunderstorm Warning	BMX	Blount, Fayette, Greene, Jefferson, Lamar, Pickens and 3 more	60 min
May 17, 4:27 AM CDT	Special Weather Statement	BMX	Blount, Etowah, St. Clair	48 min
May 17, 4:59 AM CDT	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair, Shelby	46 min
May 17, 5:05 AM CDT	Special Weather Statement	BMX	Pickens	40 min
May 17, 5:21 AM CDT	Special Weather Statement	BMX	Tuscaloosa	54 min
May 17, 5:34 AM CDT	Special Weather Statement	BMX	Calhoun, Talladega	26 min
May 17, 5:55 AM CDT	Special Weather Statement	BMX	Bibb	35 min
May 17, 6:04 AM CDT	Special Weather Statement	BMX	Clay, Cleburne, Randolph	56 min
May 17, 6:16 AM CDT	Special Weather Statement	BMX	Greene	29 min
May 17, 6:29 AM CDT	Special Weather Statement	BMX	Chilton, Shelby	46 min
May 17, 5:01 PM CDT	Special Weather Statement	BMX	Dallas	44 min
May 17, 6:15 PM CDT	Special Weather Statement	BMX	Dallas	45 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2025 Every severe thunderstorm warning in 2025

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.