Alert archive / Alabama / Mesoscale Discussions in 2016

Mesoscale Discussion 961

June 17, 201644 counties in Alabama; 19 counties in Georgia; 33 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2016, 11:34 AM CDT for 44 counties in Alabama; 19 counties in Georgia; 33 counties in Mississippi. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: Jun 17, 2016, 11:34 AM CDT (16:34 UTC)
Expired: Jun 17, 2016, 1:30 PM CDT
In force: 116 min
Issued by: the Storm Prediction Center
Chance of a watch: 80%

All 96 counties

Autauga County, AL, Barbour County, AL, Bibb County, AL, Blount County, AL, Bullock County, AL, Butler County, AL, Calhoun County, AL, Chambers County, AL, Chilton County, AL, Choctaw County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Crenshaw County, AL, Cullman County, AL, Dallas County, AL, Elmore County, AL, Etowah 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, Marion County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Walker County, AL, Wilcox County, AL, Winston County, AL, Carroll County, GA, Chattahoochee County, GA, Coweta County, GA, Douglas County, GA, Fayette County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Marion County, GA, Meriwether County, GA, Muscogee County, GA, Pike County, GA, Quitman County, GA, Spalding County, GA, Stewart County, GA, Talbot County, GA, Taylor County, GA, Troup County, GA, Upson County, GA, Attala County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clarke County, MS, Clay County, MS, Grenada County, MS, Holmes County, MS, Itawamba County, MS, Jasper County, MS, Kemper County, MS, Lafayette County, MS, Lauderdale County, MS, Leake County, MS, Lee County, MS, Leflore County, MS, Lowndes County, MS, Madison County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pontotoc County, MS, Rankin County, MS, Scott County, MS, Tallahatchie County, MS, Union County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS

The radar

The Birmingham radar (KBMX), 66 km from the middle of the area, began a volume at 16:38 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, 4.6 hours before the alert went out and 65 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: 2424 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 849 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 17, 12:37 PM CDT	Severe Thunderstorm Watch	SPC	Autauga, Baldwin, Barbour, Bibb, Blount, Bullock and 53 more	8 hr
Jun 17, 3:12 PM CDT	Mesoscale Discussion	SPC	Autauga, Bibb, Chilton, Choctaw, Clarke, Dallas and 10 more	93 min
Jun 17, 6:15 PM CDT	Mesoscale Discussion	SPC	Baldwin, Barbour, Bullock, Butler, Clarke, Coffee and 12 more	60 min
Jun 17, 11:59 AM CDT	Mesoscale Discussion	SPC	Appling, Bacon, Baldwin, Barrow, Ben Hill, Bibb and 80 more	2 hr
Jun 17, 12:52 PM CDT	Severe Thunderstorm Watch	SPC	Baldwin, Barrow, Bartow, Bibb, Bleckley, Bryan and 92 more	8 hr
Jun 17, 2:44 PM CDT	Mesoscale Discussion	SPC	Appling, Baldwin, Ben Hill, Bibb, Bleckley, Bryan and 55 more	61 min
Jun 17, 4:08 PM CDT	Severe Thunderstorm Watch	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 34 more	6 hr
Jun 17, 6:38 PM CDT	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 32 more	67 min
Jun 17, 1:30 PM CDT	Mesoscale Discussion	SPC	Bolivar, Washington	2 hr

Nearby

Mesoscale Discussions in Alabama, 2016 Mesoscale Discussions in Mississippi, 2016 Mesoscale Discussions in Georgia, 2016 Every mesoscale discussion in 2016

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.