Alert archive / Kentucky / Mesoscale Discussions in 2014

Mesoscale Discussion 814

June 4, 20144 states

The Storm Prediction Center issued this mesoscale discussion at Jun 4, 2014, 12:20 PM CDT for 4 states. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Jun 4, 2014, 12:20 PM CDT (17:20 UTC)
Expired
Jun 4, 2014, 2:15 PM CDT
In force
115 min
Issued by
the Storm Prediction Center
Chance of a watch
80%
All 103 counties

Alexander County, IL, Clay County, IL, Clinton County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Lawrence County, IL, Marion County, IL, Massac County, IL, Monroe County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Clark County, IN, Crawford County, IN, Daviess County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Harrison County, IN, Knox County, IN, Martin County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Anderson County, KY, Ballard County, KY, Barren County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Fayette County, KY, Franklin County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Henry County, KY, Hopkins County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marion County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Mercer County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Warren County, KY, Washington County, KY, Webster County, KY, Woodford County, KY, Cape Girardeau County, MO, Crawford County, MO, Jefferson County, MO, Perry County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO

The radar

The Evansville,IN radar (KVWX), 33 km from the middle of the area, began a volume at 17:20 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, 5.3 hours before the alert went out and 228 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 2014-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 797 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 2014-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 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
797 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
869 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
17 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.4

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 3, 8:05 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Greene, Jersey, Morgan and 2 more85 min
Jun 3, 9:25 PM CDTSevere Thunderstorm WatchSPCAdams, Brown, Pike5 hr
Jun 3, 11:04 PM CDTSevere Thunderstorm WatchSPCCass, Fulton, Logan, Mason, Menard, Morgan and 4 more4 hr
Jun 4, 1:29 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Champaign, Christian and 23 more91 min
Jun 4, 1:52 AM CDTSevere Thunderstorm WatchSPCChampaign, Christian, Coles, DeWitt, Douglas, Edgar and 6 more3 hr
Jun 4, 3:46 AM CDTMesoscale DiscussionSPCChampaign, Coles, Douglas, Edgar, Moultrie, Piatt and 2 more59 min
Jun 4, 5:00 AM CDTSevere Thunderstorm WatchSPCBond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more4 hr
Jun 4, 7:01 AM CDTMesoscale DiscussionSPCBond, Clinton, Fayette, Madison, Monroe, Saint Clair89 min
Jun 4, 2:21 PM CDTTornado WatchSPCAlexander, Clay, Clinton, Edwards, Franklin, Gallatin and 22 more6 hr
Jun 4, 6:57 PM CDTMesoscale DiscussionSPCAlexander, Massac, Pope, Pulaski2 hr
Jun 4, 1:51 PM CDTTornado WatchSPCDearborn, Ohio, Ripley, Switzerland10 hr
Jun 4, 11:11 AM CDTMesoscale DiscussionSPCBath, Boyd, Carter, Elliott, Fleming, Floyd and 13 more2 hr
Jun 4, 5:34 PM CDTMesoscale DiscussionSPCBath, Bourbon, Boyd, Breathitt, Carter, Clark and 36 more116 min
Jun 3, 7:04 PM CDTMesoscale DiscussionSPCAndrew, Atchison, DeKalb, Gentry, Harrison, Holt and 2 more56 min
Jun 3, 9:41 PM CDTMesoscale DiscussionSPCAdair, Andrew, Atchison, Buchanan, Caldwell, Chariton and 16 more64 min
Jun 3, 11:30 PM CDTMesoscale DiscussionSPCAudrain, Boone, Caldwell, Callaway, Carroll, Cass and 23 more60 min
Jun 3, 11:45 PM CDTSevere Thunderstorm WatchSPCAudrain, Benton, Boone, Callaway, Carroll, Cass and 25 more5 hr
Jun 4, 12:28 AM CDTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, Holt, Nodaway, Platte62 min
Jun 4, 12:50 AM CDTSevere Thunderstorm WatchSPCAndrew, Atchison, Buchanan, Caldwell, Clay, Clinton and 11 more3 hr
Jun 4, 3:32 AM CDTMesoscale DiscussionSPCBenton, Camden, Cole, Cooper, Henry, Johnson and 5 more88 min
Jun 4, 12:54 PM CDTMesoscale DiscussionSPCBollinger, Butler, Carter, Dent, Dunklin, Howell and 10 more2 hr
Jun 4, 3:47 PM CDTMesoscale DiscussionSPCBarry, Camden, Cedar, Christian, Dade, Dallas and 14 more118 min

Nearby

Mesoscale Discussions in Kentucky, 2014Mesoscale Discussions in Illinois, 2014Mesoscale Discussions in Indiana, 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.