Alert archive / Kentucky / Mesoscale Discussions in 2015

Mesoscale Discussion 609

May 11, 201565 counties in Kentucky; 18 counties in Ohio; 8 counties in West Virginia

The Storm Prediction Center issued this mesoscale discussion at May 11, 2015, 12:53 PM CDT for 65 counties in Kentucky; 18 counties in Ohio; 8 counties in West Virginia. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
May 11, 2015, 12:53 PM CDT (17:53 UTC)
Expired
May 11, 2015, 3:30 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center
Chance of a watch
60%
All 91 counties

Adair County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Bracken County, KY, Breathitt County, KY, Bullitt County, KY, Carter County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Edmonson County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Greenup County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Jackson County, KY, Jessamine County, KY, Johnson County, KY, Larue County, KY, Laurel County, KY, Lawrence County, KY, Lee County, KY, Lewis County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, Martin County, KY, Mason County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Montgomery County, KY, Morgan County, KY, Nelson County, KY, Nicholas County, KY, Owsley County, KY, Pendleton County, KY, Perry 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, Spencer County, KY, Taylor County, KY, Warren County, KY, Washington County, KY, Wolfe County, KY, Woodford County, KY, Adams County, OH, Athens County, OH, Brown County, OH, Gallia County, OH, Guernsey County, OH, Hocking County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Vinton County, OH, Washington County, OH, Cabell County, WV, Jackson County, WV, Lincoln County, WV, Mason County, WV, Putnam County, WV, Wayne County, WV, Wirt County, WV, Wood County, WV

The radar

The Cincinnati radar (KILN), 104 km from the middle of the area, began a volume at 17:53 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, 5.9 hours before the alert went out and 105 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 2015-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2015-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1744 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
118 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
May 11, 11:48 AM CDTMesoscale DiscussionSPCBoone, Campbell, Carroll, Gallatin, Grant, Kenton and 1 more2 hr
May 11, 12:14 PM CDTTornado WatchSPCBoone, Campbell, Carroll, Gallatin, Kenton, Trimble7 hr
May 11, 1:19 PM CDTSevere Thunderstorm WatchSPCAdair, Anderson, Bath, Bourbon, Boyd, Boyle and 61 more8 hr
May 11, 3:03 PM CDTMesoscale DiscussionSPCAllen, Barren, Breckinridge, Bullitt, Butler, Edmonson and 14 more2 hr
May 11, 3:13 PM CDTMesoscale DiscussionSPCAdair, Bath, Bourbon, Boyd, Boyle, Bracken and 41 more92 min
May 11, 3:56 PM CDTSevere Thunderstorm WatchSPCAllen, Barren, Breckinridge, Bullitt, Butler, Edmonson and 18 more5 hr
May 11, 5:23 PM CDTMesoscale DiscussionSPCAnderson, Bath, Boone, Bourbon, Boyle, Bracken and 33 more97 min
May 11, 1:58 PM CDTMesoscale DiscussionSPCAllen, Auglaize, Butler, Champaign, Clark, Crawford and 24 more62 min
May 11, 3:24 PM CDTMesoscale DiscussionSPCColumbiana, Geauga, Mahoning, Portage, Stark, Summit and 1 more2 hr
May 11, 3:39 PM CDTMesoscale DiscussionSPCAllen, Auglaize, Butler, Champaign, Clark, Crawford and 35 more66 min
May 11, 4:47 PM CDTSevere Thunderstorm WatchSPCAshtabula, Belmont, Carroll, Columbiana, Cuyahoga, Geauga and 12 more4 hr
May 11, 6:26 PM CDTMesoscale DiscussionSPCBelmont, Columbiana, Harrison, Jefferson, Mahoning, Monroe and 1 more64 min

Nearby

Mesoscale Discussions in Kentucky, 2015Mesoscale Discussions in Ohio, 2015Mesoscale Discussions in West Virginia, 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.