Alert archive / Georgia / Mesoscale Discussions in 2015

Mesoscale Discussion 1243

June 30, 201572 counties in Georgia; 21 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Jun 30, 2015, 1:01 PM EDT for 72 counties in Georgia; 21 counties in South Carolina. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued
Jun 30, 2015, 1:01 PM EDT (17:01 UTC)
Expired
Jun 30, 2015, 2:30 PM EDT
In force
89 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 93 counties

Baldwin County, GA, Banks County, GA, Barrow County, GA, Bibb County, GA, Bleckley County, GA, Bulloch County, GA, Burke County, GA, Butts County, GA, Candler County, GA, Cherokee County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Columbia County, GA, Coweta County, GA, Crawford County, GA, Dawson County, GA, DeKalb County, GA, Dodge County, GA, Douglas County, GA, Elbert County, GA, Emanuel County, GA, Fayette County, GA, Forsyth County, GA, Franklin County, GA, Fulton County, GA, Glascock County, GA, Greene County, GA, Gwinnett County, GA, Hall County, GA, Hancock County, GA, Hart County, GA, Henry County, GA, Houston County, GA, Jackson County, GA, Jasper County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Laurens County, GA, Lincoln County, GA, Macon County, GA, Madison County, GA, McDuffie County, GA, Meriwether County, GA, Monroe County, GA, Morgan County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Paulding County, GA, Peach County, GA, Pike County, GA, Pulaski County, GA, Putnam County, GA, Richmond County, GA, Rockdale County, GA, Screven County, GA, Spalding County, GA, Stephens County, GA, Taliaferro County, GA, Taylor County, GA, Treutlen County, GA, Twiggs County, GA, Upson County, GA, Walton County, GA, Warren County, GA, Washington County, GA, Wilkes County, GA, Wilkinson County, GA, Abbeville County, SC, Aiken County, SC, Allendale County, SC, Anderson County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Colleton County, SC, Edgefield County, SC, Fairfield County, SC, Greenwood County, SC, Hampton County, SC, Kershaw County, SC, Laurens County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Union County, SC

The radar

The Columbia radar (KCAE), 96 km from the middle of the area, began a volume at 17:02 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

Charleston AFB, SC (KCHS), launched 12:00Z, 5.0 hours before the alert went out and 199 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, Charleston AFB, SC at 12:00Z on 2015-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 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, Charleston AFB, SC at 12:00Z on 2015-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -36 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
5 J/kg
Mixed-layer CIN
-191 J/kg
Mixed-layer LCL
1411 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-36 m²/s²
0-3 km storm-relative helicity
-6 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.

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, 1:37 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, 4:33 PM EDTMesoscale DiscussionSPCBaldwin, Banks, Barrow, Bibb, Bleckley, Bulloch and 53 more117 min
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, 1:38 PM EDTMesoscale DiscussionSPCDarlington, Dillon, Florence, Marion, Marlboro3 hr
Jun 30, 5:43 PM EDTSevere Thunderstorm WatchSPCDarlington, Dillon, Florence, Georgetown, Horry, Marion and 2 more3 hr
Jun 30, 7:22 PM EDTMesoscale DiscussionSPCGeorgetown, Horry83 min

Nearby

Mesoscale Discussions in Georgia, 2015Mesoscale Discussions in South 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.