Alert archive / Georgia / Mesoscale Discussions in 2015

Mesoscale Discussion 1252

June 30, 20155 states

The Storm Prediction Center issued this mesoscale discussion at Jun 30, 2015, 4:33 PM EDT for 5 states. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued
Jun 30, 2015, 4:33 PM EDT (20:33 UTC)
Expired
Jun 30, 2015, 6:30 PM EDT
In force
117 min
Issued by
the Storm Prediction Center
All 168 counties

Baldwin County, GA, Banks County, GA, Barrow County, GA, Bibb County, GA, Bleckley County, GA, Bulloch County, GA, Burke County, GA, Candler County, GA, Clarke County, GA, Columbia County, GA, Dodge County, GA, Effingham County, GA, Elbert County, GA, Emanuel County, GA, Evans County, GA, Fannin County, GA, Franklin County, GA, Glascock County, GA, Greene County, GA, Habersham County, GA, Hall County, GA, Hancock County, GA, Hart County, GA, Jackson County, GA, Jasper County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones County, GA, Laurens County, GA, Lincoln County, GA, Lumpkin County, GA, Madison County, GA, McDuffie County, GA, Montgomery County, GA, Morgan County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Pulaski County, GA, Putnam County, GA, Rabun County, GA, Richmond County, GA, Screven County, GA, Stephens County, GA, Taliaferro County, GA, Tattnall County, GA, Toombs County, GA, Towns County, GA, Treutlen County, GA, Twiggs County, GA, Union County, GA, Walton County, GA, Warren County, GA, Washington County, GA, Wheeler County, GA, White County, GA, Wilkes County, GA, Wilkinson County, GA, McCreary County, KY, Whitley County, KY, Alexander County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Catawba County, NC, Cherokee County, NC, Clay County, NC, Cleveland County, NC, Columbus County, NC, Davie County, NC, Gaston County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Iredell County, NC, Jackson County, NC, Lincoln County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mecklenburg County, NC, Mitchell County, NC, Polk County, NC, Rowan County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Yancey County, NC, Abbeville County, SC, Aiken County, SC, Allendale County, SC, Anderson County, SC, Bamberg County, SC, Barnwell County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Edgefield County, SC, Fairfield County, SC, Florence County, SC, Georgetown County, SC, Greenville County, SC, Greenwood County, SC, Hampton County, SC, Horry County, SC, Jasper County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, McCormick County, SC, Newberry County, SC, Oconee County, SC, Orangeburg County, SC, Pickens County, SC, Richland County, SC, Saluda County, SC, Spartanburg County, SC, Sumter County, SC, Union County, SC, Williamsburg County, SC, York County, SC, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Carter County, TN, Claiborne County, TN, Cocke County, TN, Cumberland County, TN, Fentress County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hawkins County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Loudon County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Polk County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie County, TN, Sevier County, TN, Unicoi County, TN, Union County, TN, Washington County, TN

The radar

The Greer radar (KGSP), 54 km from the middle of the area, began a volume at 20:36 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.6 hours before the alert went out and 215 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2015-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 713 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2015-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
713 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
1029 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.4

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.

IssuedProductOfficeCountiesLasted
Jun 30, 8:59 AM EDTMesoscale DiscussionSPCBarrow, Bartow, Bibb, Butts, Carroll, Chattahoochee and 41 more2 hr
Jun 30, 12:17 PM EDTMesoscale DiscussionSPCAtkinson, Bacon, Baker, Ben Hill, Berrien, Brooks and 35 more88 min
Jun 30, 12:55 PM EDTMesoscale DiscussionSPCFannin, Rabun, Towns, Union3 hr
Jun 30, 1:01 PM EDTMesoscale DiscussionSPCBaldwin, Banks, Barrow, Bibb, Bleckley, Bulloch and 66 more89 min
Jun 30, 1:37 PM EDTSevere Thunderstorm WatchSPCElbert, Franklin, Habersham, Hart, Rabun, Stephens7 hr
Jun 30, 1:53 PM EDTSevere Thunderstorm WatchSPCBaldwin, Banks, Barrow, Bibb, Bleckley, Bryan and 64 more6 hr
Jun 30, 1:57 PM EDTSevere Thunderstorm WatchSPCAppling, Atkinson, Bacon, Brantley, Charlton, Clinch and 6 more7 hr
Jun 30, 2:06 PM EDTSevere Thunderstorm WatchSPCBaker, Brooks, Calhoun, Clay, Decatur, Dougherty and 11 more6 hr
Jun 30, 4:51 PM EDTMesoscale DiscussionSPCBaker, Brooks, Colquitt, Decatur, Grady, Miller and 3 more114 min
Jun 30, 7:08 PM EDTMesoscale DiscussionSPCCatoosa, Fannin, Franklin, Gilmer, Habersham, Hart and 7 more67 min
Jun 30, 12:03 PM EDTMesoscale DiscussionSPCBoone, Bourbon, Boyd, Bracken, Campbell, Carroll and 20 more2 hr
Jun 30, 12:58 PM EDTSevere Thunderstorm WatchSPCAnderson, Boone, Bourbon, Bracken, Campbell, Carroll and 26 more8 hr
Jun 30, 2:32 PM EDTMesoscale DiscussionSPCAdair, Anderson, Boyle, Breckinridge, Bullitt, Casey and 24 more2 hr
Jun 30, 3:48 PM EDTMesoscale DiscussionSPCBath, Bourbon, Boyd, Bracken, Breathitt, Carter and 34 more117 min
Jun 30, 1:38 PM EDTMesoscale DiscussionSPCAlamance, Anson, Bladen, Caswell, Chatham, Columbus and 32 more3 hr
Jun 30, 2:22 PM EDTSevere Thunderstorm WatchSPCAlleghany, Ashe, Caswell, Rockingham, Stokes, Surry and 3 more7 hr
Jun 30, 3:34 PM EDTSevere Thunderstorm WatchSPCAlamance, Anson, Chatham, Cumberland, Davidson, Durham and 26 more6 hr
Jun 30, 4:15 PM EDTMesoscale DiscussionSPCAlamance, Caswell, Chatham, Cumberland, Durham, Franklin and 16 more2 hr
Jun 30, 5:43 PM EDTSevere Thunderstorm WatchSPCBladen, Brunswick, Columbus, New Hanover, Pender, Robeson3 hr
Jun 30, 7:22 PM EDTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Brunswick, Chowan, Columbus and 27 more83 min

Nearby

Mesoscale Discussions in Georgia, 2015Mesoscale Discussions in South Carolina, 2015Mesoscale Discussions in North Carolina, 2015Every mesoscale discussion in 2015

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.