Alert archive / Alabama / Mesoscale Discussions in 2005

Mesoscale Discussion 405

March 26, 200526 counties in Alabama; 8 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Mar 26, 2005, 5:54 PM CST for 26 counties in Alabama; 8 counties in Mississippi. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued: Mar 26, 2005, 5:54 PM CST (23:54 UTC)
Expired: Mar 26, 2005, 7:00 PM CST
In force: 66 min
Issued by: the Storm Prediction Center

All 34 counties

Autauga County, AL, Bibb County, AL, Bullock County, AL, Butler County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Coosa County, AL, Crenshaw County, AL, Dale County, AL, Dallas County, AL, Elmore County, AL, Greene County, AL, Hale County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Pike County, AL, Shelby County, AL, Sumter County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Wilcox County, AL, Clarke County, MS, Jasper County, MS, Kemper County, MS, Lauderdale County, MS, Lowndes County, MS, Newton County, MS, Noxubee County, MS, Smith County, MS

The radar

The Birmingham radar (KBMX), 146 km from the middle of the area, began a volume at 23:56 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.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 11.9 hours before the alert went out and 146 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: 2 J/kg
Mixed-layer CIN: -444 J/kg
Mixed-layer LCL: 1605 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 123 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
Mar 26, 9:07 AM CST	Mesoscale Discussion	SPC	Autauga, Baldwin, Barbour, Bullock, Butler, Clarke and 20 more	113 min
Mar 26, 9:40 AM CST	Severe Thunderstorm Watch	SPC	Baldwin, Butler, Clarke, Coffee, Conecuh, Covington and 10 more	6 hr
Mar 26, 1:14 PM CST	Mesoscale Discussion	SPC	Baldwin, Mobile, Washington	2 hr
Mar 26, 1:45 PM CST	Tornado Watch	SPC	Baldwin, Barbour, Bullock, Butler, Choctaw, Clarke and 21 more	7 hr
Mar 26, 4:51 PM CST	Mesoscale Discussion	SPC	Henry, Houston	54 min
Mar 26, 3:14 PM CST	Mesoscale Discussion	SPC	Adams, Amite, Claiborne, Copiah, Franklin, Hinds and 11 more	31 min
Mar 26, 3:30 PM CST	Tornado Watch	SPC	Adams, Amite, Attala, Carroll, Choctaw, Claiborne and 33 more	8 hr
Mar 26, 4:42 PM CST	Mesoscale Discussion	SPC	Benton, Bolivar, Coahoma, DeSoto, Marshall, Panola and 3 more	2 hr

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.