Alert archive / Kentucky / Mesoscale Discussions in 2019

Mesoscale Discussion 809

May 26, 20195 states

The Storm Prediction Center issued this mesoscale discussion at May 26, 2019, 1:09 PM EDT for 5 states. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
May 26, 2019, 1:09 PM EDT (17:09 UTC)
Expired
May 26, 2019, 2:45 PM EDT
In force
96 min
Issued by
the Storm Prediction Center
Chance of a watch
60%
All 166 counties

Clark County, IN, Crawford County, IN, Dearborn County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Ohio County, IN, Orange County, IN, Perry County, IN, Ripley County, IN, Scott County, IN, Spencer County, IN, Switzerland County, IN, Washington County, IN, Adair County, KY, Anderson County, KY, Bath County, KY, Boone County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Bracken County, KY, Breathitt County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Campbell County, KY, Carroll County, KY, Carter County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Daviess County, KY, Edmonson County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Grayson County, KY, Green County, KY, Greenup County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Johnson County, KY, Kenton County, KY, Knott County, KY, Larue County, KY, Laurel County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lewis County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, Martin County, KY, Mason County, KY, McLean County, KY, Meade County, KY, Menifee County, KY, Mercer 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, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Washington County, KY, Wolfe County, KY, Woodford County, KY, Adams County, OH, Athens County, OH, Brown County, OH, Butler County, OH, Clermont County, OH, Clinton County, OH, Fayette County, OH, Gallia County, OH, Hamilton County, OH, Highland County, OH, Hocking County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Vinton County, OH, Warren County, OH, Washington County, OH, Alleghany County, VA, Buchanan County, VA, City of Covington, VA, Dickenson County, VA, Giles County, VA, Tazewell County, VA, Barbour County, WV, Boone County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Fayette County, WV, Gilmer County, WV, Greenbrier County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, McDowell County, WV, Mercer County, WV, Mingo County, WV, Monroe County, WV, Nicholas County, WV, Pleasants County, WV, Pocahontas County, WV, Putnam County, WV, Raleigh County, WV, Randolph County, WV, Ritchie County, WV, Roane County, WV, Summers County, WV, Taylor County, WV, Tyler County, WV, Upshur County, WV, Wayne County, WV, Webster County, WV, Wirt County, WV, Wood County, WV, Wyoming County, WV

The radar

The Jackson,KY radar (KJKL), 60 km from the middle of the area, began a volume at 17:08 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 12:00Z, 5.2 hours before the alert went out and 152 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 2019-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 906 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 2019-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 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
906 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
1184 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.2

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 26, 1:24 AM EDTMesoscale DiscussionSPCBenton, Boone, Carroll, Clay, Clinton, Fountain and 12 more66 min
May 26, 1:39 AM EDTSevere Thunderstorm WatchSPCBenton, Boone, Carroll, Clinton, Fountain, Montgomery and 4 more3 hr
May 26, 4:06 AM EDTMesoscale DiscussionSPCAdams, Blackford, Boone, Carroll, Cass, Clinton and 20 more84 min
May 26, 4:14 AM EDTSevere Thunderstorm WatchSPCBlackford, Delaware, Grant, Hamilton, Hancock, Hendricks and 8 more2 hr
May 26, 1:38 PM EDTSevere Thunderstorm WatchSPCClark, Crawford, Dearborn, Dubois, Floyd, Harrison and 8 more7 hr
May 26, 4:29 PM EDTMesoscale DiscussionSPCClark, Crawford, Dearborn, Dubois, Floyd, Harrison and 13 more2 hr
May 26, 6:28 PM EDTMesoscale DiscussionSPCAdair, Allen, Barren, Bell, Boyle, Breathitt and 48 more2 hr
May 26, 5:57 AM EDTSevere Thunderstorm WatchSPCChampaign, Clark, Darke, Delaware, Franklin, Licking and 5 more3 hr
May 26, 11:14 AM EDTMesoscale DiscussionSPCArlington, Caroline, Clarke, Culpeper, Essex, Fairfax and 31 more3 hr
May 26, 1:45 PM EDTMesoscale DiscussionSPCAlbemarle, Alleghany, Amelia, Amherst, Appomattox, Arlington and 77 more2 hr
May 26, 5:45 PM EDTMesoscale DiscussionSPCAlbemarle, Arlington, Caroline, Clarke, Culpeper, Essex and 37 more2 hr
May 25, 8:16 PM EDTMesoscale DiscussionSPCGrant, Hampshire, Mineral, Monongalia, Morgan, Preston and 1 more59 min

Nearby

Mesoscale Discussions in Kentucky, 2019Mesoscale Discussions in West Virginia, 2019Mesoscale Discussions in Ohio, 2019Every mesoscale discussion in 2019

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.