Alert archive / Kentucky / Mesoscale Discussions in 2015

Mesoscale Discussion 619

May 11, 201539 counties in Kentucky; 11 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at May 11, 2015, 6:23 PM EDT for 39 counties in Kentucky; 11 counties in Ohio. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued
May 11, 2015, 6:23 PM EDT (22:23 UTC)
Expired
May 11, 2015, 8:00 PM EDT
In force
97 min
Issued by
the Storm Prediction Center
All 50 counties

Anderson County, KY, Bath County, KY, Boone County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Bullitt County, KY, Campbell County, KY, Carroll County, KY, Clark County, KY, Fayette County, KY, Fleming County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Harrison County, KY, Henry County, KY, Jefferson County, KY, Jessamine County, KY, Kenton County, KY, Lewis County, KY, Madison County, KY, Marion County, KY, Mason County, KY, Mercer County, KY, Montgomery County, KY, Nelson County, KY, Nicholas County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Trimble County, KY, Washington County, KY, Woodford County, KY, Adams County, OH, Brown County, OH, Clermont County, OH, Clinton County, OH, Fayette County, OH, Greene County, OH, Highland County, OH, Madison County, OH, Pickaway County, OH, Ross County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 115 km from the middle of the area, began a volume at 22:24 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.4 hours before the alert went out and 117 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, 12:48 PM EDTMesoscale DiscussionSPCBoone, Campbell, Carroll, Gallatin, Grant, Kenton and 1 more2 hr
May 11, 1:14 PM EDTTornado WatchSPCBoone, Campbell, Carroll, Gallatin, Kenton, Trimble7 hr
May 11, 1:53 PM EDTMesoscale DiscussionSPCAdair, Anderson, Barren, Bath, Bourbon, Boyd and 59 more3 hr
May 11, 2:19 PM EDTSevere Thunderstorm WatchSPCAdair, Anderson, Bath, Bourbon, Boyd, Boyle and 61 more8 hr
May 11, 4:03 PM EDTMesoscale DiscussionSPCAllen, Barren, Breckinridge, Bullitt, Butler, Edmonson and 14 more2 hr
May 11, 4:13 PM EDTMesoscale DiscussionSPCAdair, Bath, Bourbon, Boyd, Boyle, Bracken and 41 more92 min
May 11, 4:56 PM EDTSevere Thunderstorm WatchSPCAllen, Barren, Breckinridge, Bullitt, Butler, Edmonson and 18 more5 hr
May 11, 2:58 PM EDTMesoscale DiscussionSPCAllen, Auglaize, Butler, Champaign, Clark, Crawford and 24 more62 min
May 11, 4:24 PM EDTMesoscale DiscussionSPCColumbiana, Geauga, Mahoning, Portage, Stark, Summit and 1 more2 hr
May 11, 4:39 PM EDTMesoscale DiscussionSPCAllen, Auglaize, Butler, Champaign, Clark, Crawford and 35 more66 min
May 11, 5:47 PM EDTSevere Thunderstorm WatchSPCAshtabula, Belmont, Carroll, Columbiana, Cuyahoga, Geauga and 12 more4 hr
May 11, 7:26 PM EDTMesoscale DiscussionSPCBelmont, Columbiana, Harrison, Jefferson, Mahoning, Monroe and 1 more64 min

Nearby

Mesoscale Discussions in Kentucky, 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.