Alert archive / Kentucky / Mesoscale Discussions in 2015

Mesoscale Discussion 1402

July 13, 20154 states

The Storm Prediction Center issued this mesoscale discussion at Jul 13, 2015, 8:31 PM CDT for 4 states. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued
Jul 13, 2015, 8:31 PM CDT (01:31 UTC)
Expired
Jul 13, 2015, 9:30 PM CDT
In force
59 min
Issued by
the Storm Prediction Center
Chance of a watch
80%
All 127 counties

Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Clark County, IN, Crawford County, IN, Dearborn County, IN, Dubois County, IN, Floyd County, IN, Franklin County, IN, Gibson County, IN, Harrison County, IN, Jefferson 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, Anderson County, KY, Ballard County, KY, Barren 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, Christian County, KY, Clark County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Fayette County, KY, Franklin County, KY, Gallatin County, KY, Grant County, KY, Graves 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, Jefferson County, KY, Jessamine County, KY, Kenton County, KY, Larue County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marion County, KY, Marshall County, KY, Mason County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Mercer County, KY, Muhlenberg County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Scott County, KY, Shelby 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, Webster County, KY, Woodford County, KY, Adams County, OH, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Fayette County, OH, Greene County, OH, Hamilton County, OH, Highland County, OH, Logan County, OH, Madison County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Preble County, OH, Shelby County, OH, Union County, OH, Warren County, OH

The radar

The Louisville radar (KLVX), 71 km from the middle of the area, began a volume at 01:31 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.5 hours before the alert went out and 223 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 00:00Z on 2015-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 103 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 00:00Z on 2015-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 229 square meters per square second.1939587897Sfc1 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
103 J/kg
Mixed-layer CIN
-368 J/kg
Mixed-layer LCL
1422 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
229 m²/s²
0-3 km storm-relative helicity
335 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.1

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
Jul 13, 7:22 PM CDTTornado WatchSPCClark, Clay, Crawford, Cumberland, Effingham, Jasper and 2 more7 hr
Jul 13, 9:19 PM CDTSevere Thunderstorm WatchSPCEdwards, Franklin, Gallatin, Hamilton, Hardin, Jefferson and 9 more7 hr
Jul 13, 10:22 PM CDTMesoscale DiscussionSPCBoone, Champaign, Cook, DeKalb, DuPage, Edgar and 11 more53 min
Jul 14, 12:56 AM CDTMesoscale DiscussionSPCClark, Clay, Coles, Crawford, Cumberland, Edwards and 8 more64 min
Jul 14, 2:06 AM CDTSevere Thunderstorm WatchSPCClark, Coles, Crawford, Cumberland, Jasper, Lawrence and 2 more5 hr
Jul 14, 4:35 AM CDTMesoscale DiscussionSPCLawrence85 min
Jul 13, 11:47 PM CDTMesoscale DiscussionSPCBartholomew, Boone, Brown, Clark, Dearborn, Decatur and 24 more58 min
Jul 14, 11:40 AM CDTSevere Thunderstorm WatchSPCDearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more7 hr
Jul 14, 2:12 PM CDTMesoscale DiscussionSPCBlackford, Dearborn, Fayette, Franklin, Jay, Ohio and 5 more93 min
Jul 14, 3:37 PM CDTMesoscale DiscussionSPCBlackford, Dearborn, Fayette, Franklin, Jay, Ohio and 5 more83 min
Jul 14, 5:35 AM CDTMesoscale DiscussionSPCBell, Clay, Jackson, Knox, Laurel, McCreary and 3 more55 min
Jul 14, 12:14 PM CDTMesoscale DiscussionSPCAllen, Clinton, Cumberland, McCreary, Monroe, Simpson91 min
Jul 14, 2:41 PM CDTMesoscale DiscussionSPCAllen, Calloway, Carlisle, Clinton, Fulton, Graves and 6 more94 min
Jul 14, 4:10 PM CDTSevere Thunderstorm WatchSPCAnderson, Bath, Bell, Bourbon, Boyle, Breathitt and 52 more6 hr
Jul 14, 10:44 AM CDTMesoscale DiscussionSPCAshland, Auglaize, Carroll, Champaign, Clark, Clinton and 40 more61 min

Nearby

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