Alert archive / Alabama / Mesoscale Discussions in 2008

Mesoscale Discussion 1337

June 12, 200831 counties in Alabama; 8 counties in Georgia; 31 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2008, 11:51 AM CDT for 31 counties in Alabama; 8 counties in Georgia; 31 counties in Mississippi. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued: Jun 12, 2008, 11:51 AM CDT (16:51 UTC)
Expired: Jun 12, 2008, 12:45 PM CDT
In force: 54 min
Issued by: the Storm Prediction Center

All 70 counties

Autauga County, AL, Barbour County, AL, Bibb County, AL, Bullock County, AL, Butler County, AL, Chilton County, AL, Coosa County, AL, Crenshaw County, AL, Dallas County, AL, Elmore County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Henry County, AL, Jefferson County, AL, Lamar County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Pike County, AL, Russell County, AL, Shelby County, AL, Sumter County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Walker County, AL, Wilcox County, AL, Calhoun County, GA, Chattahoochee County, GA, Clay County, GA, Quitman County, GA, Randolph County, GA, Stewart County, GA, Terrell County, GA, Webster County, GA, Attala County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Holmes County, MS, Itawamba County, MS, Kemper County, MS, Lafayette County, MS, Lauderdale County, MS, Leake County, MS, Lee County, MS, Leflore County, MS, Lowndes County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Noxubee County, MS, Oktibbeha County, MS, Panola County, MS, Pontotoc County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tunica County, MS, Union County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS

The radar

The Birmingham radar (KBMX), 60 km from the middle of the area, began a volume at 16:54 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, 4.9 hours before the alert went out and 60 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1105 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 764 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: -35 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.

Issued	Product	Office	Counties	Lasted
Jun 12, 10:30 AM CDT	Mesoscale Discussion	SPC	Baldwin, Mobile	60 min
Jun 12, 9:52 AM CDT	Mesoscale Discussion	SPC	Appling, Bacon, Brantley, Bryan, Bulloch, Camden and 12 more	53 min

Nearby

Mesoscale Discussions in Alabama, 2008 Mesoscale Discussions in Mississippi, 2008 Mesoscale Discussions in Georgia, 2008 Every mesoscale discussion in 2008

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.