Alert archive / Alabama / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 109, NWS Birmingham, AL

April 3, 2023Greene County, Hale County, Tuscaloosa County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 3, 2023, 4:40 PM CDT for Greene County, Hale County, Tuscaloosa County, Alabama. It was in force for 50 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 3, 2023, 4:40 PM CDT (21:40 UTC)
Expired
Apr 3, 2023, 5:30 PM CDT
In force
50 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Greene County, AL, Hale County, AL, Tuscaloosa County, AL

The radar

The Birmingham radar (KBMX), 90 km from the middle of the area, began a volume at 21:42 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, 9.7 hours before the alert went out and 89 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 2023-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2023-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 232 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
815 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
232 m²/s²
0-3 km storm-relative helicity
371 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
Apr 3, 4:57 AM CDTSpecial Weather StatementBMXMarengo33 min
Apr 3, 5:34 AM CDTSpecial Weather StatementBMXSumter26 min
Apr 3, 6:04 AM CDTSpecial Weather StatementBMXMarengo41 min
Apr 3, 6:49 AM CDTSpecial Weather StatementBMXDallas41 min
Apr 3, 7:20 AM CDTSpecial Weather StatementBMXLowndes40 min
Apr 3, 7:34 AM CDTSpecial Weather StatementBMXPike41 min
Apr 3, 7:52 AM CDTSpecial Weather StatementBMXMontgomery38 min
Apr 3, 8:16 AM CDTSpecial Weather StatementBMXBullock, Pike44 min
Apr 3, 8:30 AM CDTSevere Thunderstorm WarningBMXPike34 min
Apr 3, 8:46 AM CDTSpecial Weather StatementBMXBarbour59 min
Apr 3, 4:18 PM CDTSpecial Weather StatementBMXGreene27 min
Apr 3, 5:08 PM CDTSpecial Weather StatementBMXMacon37 min
Apr 3, 5:10 PM CDTSpecial Weather StatementBMXMontgomery35 min
Apr 3, 5:27 PM CDTSpecial Weather StatementBMXAutauga33 min
Apr 3, 5:31 PM CDTSpecial Weather StatementBMXHale29 min
Apr 3, 5:50 PM CDTSpecial Weather StatementBMXMontgomery25 min
Apr 3, 6:17 PM CDTSpecial Weather StatementBMXMontgomery28 min
Apr 3, 6:51 PM CDTSpecial Weather StatementBMXMontgomery24 min

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.