Alert archive / Alabama / Mesoscale Discussions in 2006

Mesoscale Discussion 671

April 26, 200637 counties in Alabama; 14 counties in Georgia; 9 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2006, 2:05 PM CDT for 37 counties in Alabama; 14 counties in Georgia; 9 counties in Mississippi. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Apr 26, 2006, 2:05 PM CDT (19:05 UTC)
Expired
Apr 26, 2006, 4:00 PM CDT
In force
115 min
Issued by
the Storm Prediction Center
All 60 counties

Autauga County, AL, Bibb County, AL, Blount County, AL, Calhoun County, AL, Cherokee County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Cullman County, AL, Dallas County, AL, DeKalb County, AL, Elmore County, AL, Etowah County, AL, Greene County, AL, Hale County, AL, Jackson County, AL, Jefferson County, AL, Lowndes County, AL, Marengo County, AL, Marshall County, AL, Monroe County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Randolph County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Walker County, AL, Washington County, AL, Wilcox County, AL, Bartow County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Floyd County, GA, Gordon County, GA, Haralson County, GA, Heard County, GA, Murray County, GA, Paulding County, GA, Polk County, GA, Walker County, GA, Whitfield County, GA, Clarke County, MS, Covington County, MS, Jasper County, MS, Jones County, MS, Kemper County, MS, Lauderdale County, MS, Newton County, MS, Smith County, MS, Wayne County, MS

The radar

The Birmingham radar (KBMX), 35 km from the middle of the area, began a volume at 19:05 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.1 hours before the alert went out and 243 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, Peachtre/Fal Fld, GA at 12:00Z on 2006-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 226 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, Peachtre/Fal Fld, GA at 12:00Z on 2006-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
226 J/kg
Mixed-layer CIN
-135 J/kg
Mixed-layer LCL
808 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 26, 1:23 AM CDTMesoscale DiscussionSPCColbert, Cullman, Franklin, Lamar, Lauderdale, Lawrence and 5 more2 hr
Apr 26, 10:04 AM CDTMesoscale DiscussionSPCBanks, Barrow, Clarke, Columbia, Elbert, Forsyth and 16 more86 min
Apr 26, 11:02 AM CDTMesoscale DiscussionSPCBrantley, Brooks, Camden, Charlton, Clinch, Colquitt and 12 more88 min
Apr 26, 11:40 AM CDTSevere Thunderstorm WatchSPCBaldwin, Banks, Barrow, Bibb, Bleckley, Bryan and 59 more8 hr
Apr 26, 2:38 PM CDTMesoscale DiscussionSPCAppling, Bacon, Brantley, Camden, Charlton, Clinch and 7 more97 min

Nearby

Mesoscale Discussions in Alabama, 2006Mesoscale Discussions in Georgia, 2006Mesoscale Discussions in Mississippi, 2006Every mesoscale discussion in 2006

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.