Alert archive / Alabama / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 154, NWS Birmingham, AL

September 9, 20194 counties in Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Sep 9, 2019, 2:53 PM CDT for 4 counties in Alabama. It was in force for 35 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 9, 2019, 2:53 PM CDT (19:53 UTC)
Expired
Sep 9, 2019, 3:28 PM CDT
In force
35 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Autauga County, AL, Chilton County, AL, Coosa County, AL, Elmore County, AL

The radar

The Birmingham radar (KBMX), 58 km from the middle of the area, began a volume at 19:56 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, 7.9 hours before the alert went out and 59 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 2019-09-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 33 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 2019-09-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
33 J/kg
Mixed-layer CIN
-380 J/kg
Mixed-layer LCL
2081 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
26 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 9, 3:18 AM CDTHeat AdvisoryBMXLee18 hr
Sep 9, 12:10 PM CDTSpecial Weather StatementBMXMontgomery35 min
Sep 9, 12:39 PM CDTSpecial Weather StatementBMXBullock36 min
Sep 9, 12:40 PM CDTSpecial Weather StatementBMXDallas35 min
Sep 9, 12:45 PM CDTSpecial Weather StatementBMXPike45 min
Sep 9, 12:52 PM CDTSpecial Weather StatementBMXLowndes38 min
Sep 9, 1:03 PM CDTSpecial Weather StatementBMXBullock42 min
Sep 9, 1:31 PM CDTAreal Flood AdvisoryBMXLowndes119 min
Sep 9, 1:34 PM CDTSpecial Weather StatementBMXLowndes26 min
Sep 9, 1:35 PM CDTSpecial Weather StatementBMXMacon25 min
Sep 9, 1:58 PM CDTSpecial Weather StatementBMXMacon32 min
Sep 9, 2:02 PM CDTSpecial Weather StatementBMXLowndes43 min
Sep 9, 2:13 PM CDTSpecial Weather StatementBMXBarbour32 min
Sep 9, 2:19 PM CDTSevere Thunderstorm WarningBMXBarbour24 min
Sep 9, 2:28 PM CDTSpecial Weather StatementBMXTallapoosa32 min
Sep 9, 2:47 PM CDTSpecial Weather StatementBMXElmore28 min
Sep 9, 2:58 PM CDTSpecial Weather StatementBMXRussell47 min
Sep 9, 3:10 PM CDTSevere Thunderstorm WarningBMXRussell50 min
Sep 9, 3:39 PM CDTSpecial Weather StatementBMXChilton36 min
Sep 9, 3:58 PM CDTSpecial Weather StatementBMXRussell47 min
Sep 9, 4:14 PM CDTSpecial Weather StatementBMXChilton46 min
Sep 9, 4:46 PM CDTSpecial Weather StatementBMXClay29 min
Sep 9, 5:13 PM CDTSevere Thunderstorm WarningBMXClay, Talladega24 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2019Every severe thunderstorm warning in 2019

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.