Alert archive / Georgia / Mesoscale Discussions in 2014

Mesoscale Discussion 860

June 6, 201456 counties in Georgia; Abbeville County, McCormick County, South Carolina

The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2014, 3:21 PM EDT for 56 counties in Georgia; Abbeville County, McCormick County, South Carolina. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 6, 2014, 3:21 PM EDT (19:21 UTC)
Expired
Jun 6, 2014, 5:45 PM EDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 58 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, Crisp County, GA, Dodge County, GA, Dooly County, GA, Elbert County, GA, Emanuel County, GA, Evans County, GA, Franklin County, GA, Glascock County, GA, Greene County, GA, Hancock County, GA, Hart County, GA, Houston 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, Madison County, GA, McDuffie County, GA, Monroe County, GA, Montgomery County, GA, Morgan County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Peach County, GA, Pulaski County, GA, Putnam County, GA, Richmond County, GA, Screven County, GA, Taliaferro County, GA, Tattnall County, GA, Telfair County, GA, Toombs County, GA, Treutlen County, GA, Twiggs County, GA, Walton County, GA, Warren County, GA, Washington County, GA, Wheeler County, GA, Wilcox County, GA, Wilkes County, GA, Wilkinson County, GA, Abbeville County, SC, McCormick County, SC

The radar

The Robins AFB radar (KJGX), 49 km from the middle of the area, began a volume at 19:23 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, 7.4 hours before the alert went out and 150 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 2014-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 634 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 2014-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 97 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
634 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
897 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
97 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

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 5, 10:13 PM EDTMesoscale DiscussionSPCBurke, Columbia, Glascock, Jefferson, Lincoln, McDuffie and 2 more92 min
Jun 6, 12:22 PM EDTMesoscale DiscussionSPCBartow, Carroll, Chattooga, Cherokee, Cobb, Coweta and 10 more83 min
Jun 6, 12:51 PM EDTSevere Thunderstorm WatchSPCBartow, Carroll, Catoosa, Chattooga, Cherokee, Clayton and 22 more7 hr
Jun 6, 3:43 PM EDTMesoscale DiscussionSPCCarroll, Chattooga, Floyd, Gordon, Haralson, Heard and 3 more92 min
Jun 6, 4:06 PM EDTMesoscale DiscussionSPCCalhoun, Chattahoochee, Clay, Crisp, Dooly, Dougherty and 13 more114 min
Jun 6, 7:49 PM EDTSevere Thunderstorm WatchSPCBaker, Ben Hill, Berrien, Brooks, Calhoun, Clay and 20 more6 hr
Jun 6, 1:09 PM EDTMesoscale DiscussionSPCBerkeley, Calhoun, Clarendon, Colleton, Darlington, Dillon and 9 more3 hr

Nearby

Mesoscale Discussions in Georgia, 2014Mesoscale Discussions in South Carolina, 2014Every mesoscale discussion in 2014

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.