Alert archive / Alabama / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 159, NWS Birmingham, AL

October 5, 2019Blount County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Oct 5, 2019, 4:38 PM CDT for Blount County, Alabama. It was in force for 18 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
Oct 5, 2019, 4:38 PM CDT (21:38 UTC)
Expired
Oct 5, 2019, 4:56 PM CDT
In force
18 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Blount County, AL

The radar

The Birmingham radar (KBMX), 92 km from the middle of the area, began a volume at 21:39 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, 9.6 hours before the alert went out and 91 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 2019-10-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 19 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 2019-10-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
19 J/kg
Mixed-layer CIN
-325 J/kg
Mixed-layer LCL
1937 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
41 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
Oct 5, 1:58 PM CDTSpecial Weather StatementBMXElmore32 min
Oct 5, 2:00 PM CDTSpecial Weather StatementBMXDallas30 min
Oct 5, 2:25 PM CDTSpecial Weather StatementBMXLowndes35 min
Oct 5, 2:31 PM CDTSpecial Weather StatementBMXCleburne29 min
Oct 5, 2:39 PM CDTSpecial Weather StatementBMXCalhoun36 min
Oct 5, 2:50 PM CDTSpecial Weather StatementBMXTuscaloosa25 min
Oct 5, 2:52 PM CDTSpecial Weather StatementBMXDallas23 min
Oct 5, 3:13 PM CDTAreal Flood AdvisoryBMXDallas3 hr
Oct 5, 3:16 PM CDTSpecial Weather StatementBMXDallas29 min
Oct 5, 3:20 PM CDTSpecial Weather StatementBMXCleburne25 min
Oct 5, 3:25 PM CDTSpecial Weather StatementBMXCherokee35 min
Oct 5, 4:00 PM CDTSpecial Weather StatementBMXEtowah30 min
Oct 5, 4:03 PM CDTSpecial Weather StatementBMXRandolph27 min
Oct 5, 4:04 PM CDTSpecial Weather StatementBMXJefferson26 min
Oct 5, 4:13 PM CDTSpecial Weather StatementBMXBlount32 min
Oct 5, 4:22 PM CDTSevere Thunderstorm WarningBMXJefferson38 min
Oct 5, 4:25 PM CDTSpecial Weather StatementBMXFayette35 min
Oct 5, 4:43 PM CDTSpecial Weather StatementBMXSumter32 min
Oct 5, 4:52 PM CDTSpecial Weather StatementBMXFayette38 min
Oct 5, 4:54 PM CDTSpecial Weather StatementBMXBlount36 min
Oct 5, 5:04 PM CDTSpecial Weather StatementBMXTuscaloosa26 min
Oct 5, 5:16 PM CDTSpecial Weather StatementBMXFayette29 min
Oct 5, 5:30 PM CDTAreal Flood AdvisoryBMXFayette, Pickens, Tuscaloosa3 hr
Oct 5, 6:43 PM CDTSpecial Weather StatementBMXPickens32 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.