Alert archive / Kentucky / Mesoscale Discussions in 2015

Mesoscale Discussion 1390

July 13, 20155 states

The Storm Prediction Center issued this mesoscale discussion at Jul 13, 2015, 11:01 AM CDT for 5 states. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued
Jul 13, 2015, 11:01 AM CDT (16:01 UTC)
Expired
Jul 13, 2015, 12:30 PM CDT
In force
89 min
Issued by
the Storm Prediction Center
Chance of a watch
95%
All 147 counties

Edwards County, IL, Wabash County, IL, White County, IL, Clark County, IN, Crawford County, IN, Daviess County, IN, Dearborn County, IN, Dubois County, IN, Floyd County, IN, Franklin County, IN, Gibson County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Knox County, IN, Martin County, IN, Ohio County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Ripley County, IN, Scott County, IN, Spencer County, IN, Switzerland County, IN, Union County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Boone County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Campbell County, KY, Carroll County, KY, Casey County, KY, Christian County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Crittenden County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henderson County, KY, Henry County, KY, Hopkins County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Kenton County, KY, Knox County, KY, Larue County, KY, Laurel County, KY, Lee County, KY, Lewis County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Marion County, KY, Mason County, KY, McCreary County, KY, McLean County, KY, Meade County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Morgan County, KY, Muhlenberg County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Owsley County, KY, Pendleton County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Trimble County, KY, Union County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Webster County, KY, Whitley County, KY, Wolfe County, KY, Woodford County, KY, Adams County, OH, Brown County, OH, Butler County, OH, Clermont County, OH, Clinton County, OH, Hamilton County, OH, Preble County, OH, Warren County, OH, Cheatham County, TN, Clay County, TN, Davidson County, TN, Fentress County, TN, Jackson County, TN, Macon County, TN, Montgomery County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Scott County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Wilson County, TN

The radar

The Louisville radar (KLVX), 20 km from the middle of the area, began a volume at 16:05 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

Nashville Metro, TN (KBNA), launched 12:00Z, 4.0 hours before the alert went out and 227 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, Nashville Metro, TN at 12:00Z on 2015-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 926 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, Nashville Metro, TN at 12:00Z on 2015-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.19395878Sfc1 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
926 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
1124 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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
Jul 13, 3:49 AM CDTMesoscale DiscussionSPCBoone, Cook, DeKalb, DuPage, Grundy, Iroquois and 7 more116 min
Jul 13, 4:14 AM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 18 more6 hr
Jul 13, 7:19 AM CDTMesoscale DiscussionSPCFord, Grundy, Iroquois, Kankakee, Kendall, LaSalle and 2 more86 min
Jul 13, 9:17 AM CDTSevere Thunderstorm WatchSPCChampaign, Clark, Coles, Crawford, Cumberland, DeWitt and 16 more4 hr
Jul 13, 3:21 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Champaign, DeKalb, DeWitt and 29 more84 min
Jul 13, 4:01 PM CDTTornado WatchSPCBoone, Bureau, Carroll, Cass, Champaign, Christian and 52 more7 hr
Jul 13, 4:33 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Christian, Clinton and 14 more57 min
Jul 13, 6:20 PM CDTSevere Thunderstorm WatchSPCAdams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more4 hr
Jul 13, 6:59 PM CDTMesoscale DiscussionSPCBoone, Brown, Bureau, Carroll, Cass, Champaign and 65 more91 min
Jul 13, 11:55 AM CDTSevere Thunderstorm WatchSPCClark, Crawford, Dearborn, Dubois, Floyd, Harrison and 8 more7 hr
Jul 13, 2:04 PM CDTMesoscale DiscussionSPCClark, Crawford, Dubois, Floyd, Harrison, Orange and 1 more86 min
Jul 13, 4:45 PM CDTMesoscale DiscussionSPCAdair, Barren, Bell, Casey, Clay, Clinton and 25 more2 hr
Jul 13, 3:07 PM CDTMesoscale DiscussionSPCCarter, Cocke, Grainger, Greene, Hamblen, Hancock and 6 more83 min
Jul 13, 3:39 PM CDTSevere Thunderstorm WatchSPCCarter, Claiborne, Cocke, Grainger, Greene, Hamblen and 8 more5 hr
Jul 13, 5:55 PM CDTSevere Thunderstorm WatchSPCAnderson, Bledsoe, Blount, Bradley, Campbell, Clay and 25 more4 hr

Nearby

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