Alert archive / Alabama / Mesoscale Discussions in 2022

Mesoscale Discussion 1990

November 30, 202226 counties in Alabama; Carroll County, Haralson County, Heard County, Georgia; 10 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Nov 30, 2022, 2:15 AM CST for 26 counties in Alabama; Carroll County, Haralson County, Heard County, Georgia; 10 counties in Mississippi. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Nov 30, 2022, 2:15 AM CST (08:15 UTC)
Expired
Nov 30, 2022, 4:15 AM CST
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Tornado watch 576
All 39 counties

Autauga County, AL, Bibb County, AL, Butler County, AL, Chambers County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Clay County, AL, Cleburne County, AL, Conecuh County, AL, Coosa County, AL, Dallas County, AL, Elmore County, AL, Hale County, AL, Lowndes County, AL, Marengo County, AL, Monroe County, AL, Montgomery County, AL, Perry County, AL, Randolph County, AL, Shelby County, AL, Sumter County, AL, Talladega County, AL, Tallapoosa County, AL, Washington County, AL, Wilcox County, AL, Carroll County, GA, Haralson County, GA, Heard County, GA, Clarke County, MS, Covington County, MS, Forrest County, MS, Greene County, MS, Jasper County, MS, Jones County, MS, Lamar County, MS, Lauderdale County, MS, Perry County, MS, Wayne County, MS

The radar

The Birmingham radar (KBMX), 112 km from the middle of the area, began a volume at 08:13 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 00:00Z, 8.3 hours before the alert went out and 112 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 00:00Z on 2022-11-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 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 00:00Z on 2022-11-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 402 square meters per square second.1939587897117Sfc1 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
20 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
954 m above ground
0-6 km bulk shear
72 kt
0-1 km storm-relative helicity
402 m²/s²
0-3 km storm-relative helicity
531 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 29, 6:19 PM CSTMesoscale DiscussionSPCLauderdale86 min
Nov 29, 8:11 PM CSTMesoscale DiscussionSPCBibb, Choctaw, Fayette, Greene, Hale, Jefferson and 7 more64 min
Nov 29, 10:23 PM CSTMesoscale DiscussionSPCAutauga, Bibb, Butler, Chilton, Choctaw, Clarke and 13 more67 min
Nov 29, 10:52 PM CSTTornado WatchSPCAutauga, Baldwin, Bibb, Butler, Chilton, Choctaw and 27 more7 hr
Nov 29, 11:33 PM CSTMesoscale DiscussionSPCBibb, Choctaw, Fayette, Greene, Hale, Jefferson and 10 more87 min
Nov 30, 4:20 AM CSTMesoscale DiscussionSPCBaldwin, Butler, Coffee, Conecuh, Covington, Crenshaw and 8 more115 min
Nov 30, 4:34 AM CSTTornado WatchSPCBaldwin, Coffee, Covington, Dale, Escambia, Geneva and 3 more6 hr
Nov 30, 7:16 AM CSTMesoscale DiscussionSPCDale, Geneva, Henry, Houston119 min
Nov 30, 10:08 AM CSTMesoscale DiscussionSPCBrantley, Camden, Charlton, Clinch, Echols, Glynn and 2 more67 min
Nov 29, 6:52 PM CSTTornado Watch PDSSPCAdams, Attala, Bolivar, Carroll, Choctaw, Claiborne and 32 more9 hr
Nov 29, 9:21 PM CSTMesoscale DiscussionSPCJasper, Jefferson Davis, Lawrence, Lincoln, Newton, Simpson and 1 more54 min

Nearby

Mesoscale Discussions in Alabama, 2022Mesoscale Discussions in Mississippi, 2022Mesoscale Discussions in Georgia, 2022Every mesoscale discussion in 2022

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.