Alert archive / Kentucky / Mesoscale Discussions in 2014

Mesoscale Discussion 1640

August 30, 201414 counties in Indiana; 63 counties in Kentucky; 34 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Aug 30, 2014, 4:36 PM EDT for 14 counties in Indiana; 63 counties in Kentucky; 34 counties in Ohio. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued
Aug 30, 2014, 4:36 PM EDT (20:36 UTC)
Expired
Aug 30, 2014, 6:30 PM EDT
In force
114 min
Issued by
the Storm Prediction Center
Chance of a watch
5%
All 111 counties

Clark County, IN, Crawford County, IN, Dearborn County, IN, Floyd County, IN, Franklin County, IN, Harrison County, IN, Jefferson County, IN, Jennings County, IN, Ohio County, IN, Perry County, IN, Ripley County, IN, Scott County, IN, Switzerland County, IN, Washington County, IN, Anderson County, KY, Barren County, KY, Bath County, KY, Boone County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Campbell County, KY, Carroll County, KY, Casey County, KY, Christian County, KY, Clark County, KY, Daviess County, KY, Edmonson County, KY, Fayette County, KY, Fleming 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, Jefferson County, KY, Jessamine County, KY, Kenton County, KY, Larue County, KY, Lewis County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Marion County, KY, Mason County, KY, McLean County, KY, Meade County, KY, Mercer County, KY, Montgomery 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, Rowan County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Woodford County, KY, Adams County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Hamilton County, OH, Highland County, OH, Hocking County, OH, Jackson County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Marion County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Muskingum County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Scioto County, OH, Union County, OH, Vinton County, OH, Warren County, OH

The radar

The Louisville radar (KLVX), 100 km from the middle of the area, began a volume at 20:37 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

Nashville Metro, TN (KBNA), launched 12:00Z, 8.6 hours before the alert went out and 298 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 2014-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 79 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 2014-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.1939Sfc1 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
79 J/kg
Mixed-layer CIN
-108 J/kg
Mixed-layer LCL
1512 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
35 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
Aug 30, 1:45 PM EDTMesoscale DiscussionSPCElkhart, Jasper, Kosciusko, LaGrange, Lake, LaPorte and 7 more3 hr

Nearby

Mesoscale Discussions in Kentucky, 2014Mesoscale Discussions in Ohio, 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.