Alert archive / Georgia / Mesoscale Discussions in 2011

Mesoscale Discussion 1103

June 5, 20115 states

The Storm Prediction Center issued this mesoscale discussion at Jun 5, 2011, 4:45 PM CDT for 5 states. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: Jun 5, 2011, 4:45 PM CDT (21:45 UTC)
Expired: Jun 5, 2011, 5:45 PM CDT
In force: 60 min
Issued by: the Storm Prediction Center

All 73 counties

Blount County, AL, Calhoun County, AL, Cherokee County, AL, Cleburne County, AL, Cullman County, AL, DeKalb County, AL, Etowah County, AL, Jackson County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, St. Clair County, AL, Winston County, AL, Banks County, GA, Barrow County, GA, Bartow County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Dade County, GA, Dawson County, GA, DeKalb County, GA, Douglas County, GA, Fannin County, GA, Floyd County, GA, Forsyth County, GA, Franklin County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Gwinnett County, GA, Habersham County, GA, Hall County, GA, Haralson County, GA, Hart County, GA, Jackson County, GA, Lumpkin County, GA, Madison County, GA, Murray County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Rabun County, GA, Rockdale County, GA, Stephens County, GA, Towns County, GA, Union County, GA, Walker County, GA, Walton County, GA, White County, GA, Whitfield County, GA, Cherokee County, NC, Clay County, NC, Graham County, NC, Jackson County, NC, Macon County, NC, Oconee County, SC, Bradley County, TN, Franklin County, TN, Hamilton County, TN, Lincoln County, TN, Marion County, TN, McMinn County, TN, Monroe County, TN, Moore County, TN, Polk County, TN, Sequatchie County, TN

The radar

The Northeast Alabama radar (KHTX), 108 km from the middle of the area, began a volume at 21:45 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, 9.8 hours before the alert went out and 140 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: 506 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 1526 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -55 m²/s²
0-3 km storm-relative helicity: -1 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 5, 6:13 PM CDT	Mesoscale Discussion	SPC	Choctaw, Clarke, Greene, Marengo, Mobile, Sumter and 1 more	2 hr
Jun 5, 3:15 PM CDT	Mesoscale Discussion	SPC	Alexander, Alleghany, Anson, Avery, Burke, Cabarrus and 27 more	60 min
Jun 5, 10:47 AM CDT	Mesoscale Discussion	SPC	Bedford, Cannon, Cheatham, Clay, Davidson, DeKalb and 21 more	88 min
Jun 5, 12:02 PM CDT	Severe Thunderstorm Watch	SPC	Bedford, Benton, Bledsoe, Bradley, Cannon, Cheatham and 50 more	5 hr
Jun 5, 2:55 PM CDT	Mesoscale Discussion	SPC	Bedford, Benton, Cannon, Cheatham, Clay, Coffee and 34 more	65 min

Nearby

Mesoscale Discussions in Georgia, 2011 Mesoscale Discussions in Alabama, 2011 Mesoscale Discussions in Tennessee, 2011 Every mesoscale discussion in 2011

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.