Alert archive / Kentucky / Mesoscale Discussions in 2015

Mesoscale Discussion 1256

June 30, 20158 states

The Storm Prediction Center issued this mesoscale discussion at Jun 30, 2015, 7:08 PM EDT for 8 states. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued
Jun 30, 2015, 7:08 PM EDT (23:08 UTC)
Expired
Jun 30, 2015, 8:15 PM EDT
In force
67 min
Issued by
the Storm Prediction Center
All 191 counties

Catoosa County, GA, Fannin County, GA, Franklin County, GA, Gilmer County, GA, Habersham County, GA, Hart County, GA, Lumpkin County, GA, Murray County, GA, Rabun County, GA, Stephens County, GA, Towns County, GA, Union County, GA, White County, GA, Clark County, IN, Adair County, KY, Anderson County, KY, Bath County, KY, Bell County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Breathitt County, KY, Bullitt County, KY, Carter County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Garrard County, KY, Green County, KY, Harlan County, KY, Henry County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, Martin County, KY, McCreary County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Montgomery County, KY, Morgan County, KY, Nelson County, KY, Nicholas County, KY, Oldham County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Washington County, KY, Wayne County, KY, Whitley County, KY, Wolfe County, KY, Woodford County, KY, Alexander County, NC, Alleghany County, NC, Ashe 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, Graham County, NC, Haywood County, NC, Henderson County, NC, Jackson County, NC, Lincoln County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mitchell County, NC, Polk County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Watauga County, NC, Wilkes County, NC, Yancey County, NC, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Greenville County, SC, Laurens County, SC, Oconee County, SC, Pickens County, SC, Spartanburg County, SC, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Carter County, TN, Claiborne County, TN, Clay County, TN, Cocke County, TN, Cumberland County, TN, Fentress County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hamilton County, TN, Hancock 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, Overton County, TN, Pickett County, TN, Polk County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie County, TN, Sevier County, TN, Sullivan County, TN, Unicoi County, TN, Union County, TN, Van Buren County, TN, Washington County, TN, White County, TN, Bland County, VA, Buchanan County, VA, City of Bristol, VA, City of Galax, VA, City of Norton, VA, Dickenson County, VA, Grayson County, VA, Lee County, VA, Russell County, VA, Scott County, VA, Smyth County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA, Wythe County, VA, Boone County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Fayette County, WV, Gilmer County, WV, Kanawha County, WV, Lincoln County, WV, Logan County, WV, McDowell County, WV, Mercer County, WV, Mingo County, WV, Nicholas County, WV, Putnam County, WV, Raleigh County, WV, Roane County, WV, Summers County, WV, Wayne County, WV, Wyoming County, WV

The radar

The Jackson,KY radar (KJKL), 45 km from the middle of the area, began a volume at 23:10 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.1 hours before the alert went out and 246 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, Cncnati-Daytn, OH at 12:00Z on 2015-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 134 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, Cncnati-Daytn, OH at 12:00Z on 2015-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
134 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
728 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
104 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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, 4:33 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, 12:03 PM EDTMesoscale DiscussionSPCDearborn, Franklin, Jefferson, Ohio, Ripley, Switzerland2 hr
Jun 30, 12:58 PM EDTSevere Thunderstorm WatchSPCClark, Dearborn, Floyd, Franklin, Jefferson, Ohio and 3 more8 hr
Jun 30, 2:32 PM EDTMesoscale DiscussionSPCClark, Crawford, Floyd, Harrison, Jackson, Lawrence and 3 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
Jun 30, 12:31 PM EDTMesoscale DiscussionSPCArlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church2 hr
Jun 30, 7:38 PM EDTMesoscale DiscussionSPCMarion, Monongalia, Preston67 min

Nearby

Mesoscale Discussions in Kentucky, 2015Mesoscale Discussions in Tennessee, 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.