Alert archive / Alabama / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 187, NWS Birmingham, AL

September 21, 2026Jefferson County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Sep 21, 2026, 1:00 PM CDT for Jefferson County, Alabama. It was in force for 45 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
Sep 21, 2026, 1:00 PM CDT (18:00 UTC)
Expired
Sep 21, 2026, 1:45 PM CDT
In force
45 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Jefferson County, AL

The radar

The Birmingham radar (KBMX), 44 km from the middle of the area, began a volume at 18:04 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, 6.0 hours before the alert went out and 43 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-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2026-09-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2030 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2026-09-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2030 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
893 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 20, 11:35 PM CDTSpecial Weather StatementBMXFayette25 min
Sep 21, 12:20 PM CDTSpecial Weather StatementBMXJefferson25 min
Sep 21, 12:33 PM CDTSpecial Weather StatementBMXBibb27 min
Sep 21, 12:45 PM CDTSpecial Weather StatementBMXJefferson45 min
Sep 21, 12:52 PM CDTSpecial Weather StatementBMXBlount38 min
Sep 21, 1:17 PM CDTSpecial Weather StatementBMXShelby43 min
Sep 21, 1:18 PM CDTSpecial Weather StatementBMXCalhoun42 min
Sep 21, 1:28 PM CDTSpecial Weather StatementBMXSt. Clair47 min
Sep 21, 1:30 PM CDTSpecial Weather StatementBMXPerry45 min
Sep 21, 1:45 PM CDTSpecial Weather StatementBMXShelby30 min
Sep 21, 1:59 PM CDTSpecial Weather StatementBMXBibb31 min
Sep 21, 2:06 PM CDTSpecial Weather StatementBMXChilton39 min
Sep 21, 2:08 PM CDTAreal Flood AdvisoryBMXChilton, Shelby67 min
Sep 21, 2:43 PM CDTSpecial Weather StatementBMXTalladega47 min
Sep 21, 2:54 PM CDTSpecial Weather StatementBMXTuscaloosa36 min
Sep 21, 2:56 PM CDTSpecial Weather StatementBMXShelby34 min
Sep 21, 3:13 PM CDTSpecial Weather StatementBMXTuscaloosa17 min
Sep 21, 3:14 PM CDTSpecial Weather StatementBMXDallas, Hale, Perry46 min
Sep 21, 3:16 PM CDTSpecial Weather StatementBMXClay44 min
Sep 21, 3:26 PM CDTSpecial Weather StatementBMXFayette, Lamar34 min
Sep 21, 3:34 PM CDTSevere Thunderstorm WarningBMXLamar19 min
Sep 21, 3:47 PM CDTAreal Flood AdvisoryBMXTuscaloosa118 min
Sep 21, 3:55 PM CDTSpecial Weather StatementBMXWinston35 min
Sep 21, 4:00 PM CDTSpecial Weather StatementBMXPickens15 min
Sep 21, 4:03 PM CDTSpecial Weather StatementBMXCleburne27 min
Sep 21, 4:13 PM CDTSevere Thunderstorm WarningBMXPickens47 min
Sep 21, 4:18 PM CDTSpecial Weather StatementBMXMarengo27 min
Sep 21, 4:20 PM CDTSpecial Weather StatementBMXLamar25 min
Sep 21, 4:32 PM CDTSpecial Weather StatementBMXGreene28 min
Sep 21, 4:39 PM CDTSpecial Weather StatementBMXElmore36 min
Sep 21, 4:43 PM CDTSevere Thunderstorm WarningBMXEtowah47 min
Sep 21, 4:53 PM CDTSpecial Weather StatementBMXPickens37 min
Sep 21, 4:58 PM CDTSpecial Weather StatementBMXBlount47 min
Sep 21, 5:03 PM CDTSpecial Weather StatementBMXGreene, Sumter42 min
Sep 21, 5:16 PM CDTSpecial Weather StatementBMXBlount44 min
Sep 21, 5:25 PM CDTSevere Thunderstorm WarningBMXMarion35 min
Sep 21, 5:46 PM CDTSpecial Weather StatementBMXSt. Clair44 min
Sep 21, 5:50 PM CDTSpecial Weather StatementBMXMarion25 min
Sep 21, 6:13 PM CDTSpecial Weather StatementBMXSt. Clair47 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2026Every severe thunderstorm warning in 2026

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.