Alert archive / Alabama / Mesoscale Discussions in 2005

Mesoscale Discussion 2436

November 15, 200534 counties in Alabama; 22 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Nov 15, 2005, 6:20 PM CST for 34 counties in Alabama; 22 counties in Mississippi. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued: Nov 15, 2005, 6:20 PM CST (00:20 UTC)
Expired: Nov 15, 2005, 7:15 PM CST
In force: 55 min
Issued by: the Storm Prediction Center

All 56 counties

Autauga County, AL, Baldwin 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, Conecuh County, AL, Coosa County, AL, Dallas County, AL, DeKalb County, AL, Elmore County, AL, Escambia 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, Mobile County, AL, Monroe County, AL, Perry County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Washington County, AL, Wilcox County, AL, Clarke County, MS, Covington County, MS, Forrest County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Marion County, MS, Newton County, MS, Pearl River County, MS, Perry County, MS, Smith County, MS, Stone County, MS, Walthall County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 143 km from the middle of the area, began a volume at 00:24 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Tornado Watch 871Nov 15, 6:40 PM CST

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.3 hours before the alert went out and 184 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: 440 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 828 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 270 m²/s²
0-3 km storm-relative helicity: 313 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 2.7

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
Nov 15, 6:40 PM CST	Tornado Watch	SPC	Autauga, Bibb, Blount, Calhoun, Cherokee, Chilton and 22 more	6 hr
Nov 15, 8:29 PM CST	Mesoscale Discussion	SPC	Autauga, Bibb, Blount, Calhoun, Chilton, Choctaw and 24 more	91 min
Nov 15, 11:07 PM CST	Mesoscale Discussion	SPC	Autauga, Bibb, Blount, Calhoun, Cherokee, Chilton and 16 more	53 min
Nov 16, 2:03 AM CST	Mesoscale Discussion	SPC	Randolph	117 min

Nearby

Mesoscale Discussions in Alabama, 2005 Mesoscale Discussions in Mississippi, 2005 Every mesoscale discussion in 2005

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.