Alert archive / Kentucky / Mesoscale Discussions in 2014

Mesoscale Discussion 1886

October 13, 201452 counties in Kentucky; 15 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Oct 13, 2014, 10:41 PM CDT for 52 counties in Kentucky; 15 counties in Tennessee. It was in force for 64 min.

The area

The outline as issued.

The facts

Issued
Oct 13, 2014, 10:41 PM CDT (03:41 UTC)
Expired
Oct 13, 2014, 11:45 PM CDT
In force
64 min
Issued by
the Storm Prediction Center
Chance of a watch
20%
All 67 counties

Adair County, KY, Anderson County, KY, Bath County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Carroll County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Estill 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, Jackson County, KY, Jessamine County, KY, Knox County, KY, Laurel County, KY, Lee County, KY, Lincoln County, KY, Madison County, KY, Marion County, KY, Mason County, KY, McCreary County, KY, Mercer County, KY, Montgomery County, KY, Nelson County, KY, Nicholas County, KY, Oldham County, KY, Owen County, KY, Owsley County, KY, Pendleton County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Washington County, KY, Wayne County, KY, Whitley County, KY, Woodford County, KY, Anderson County, TN, Bledsoe County, TN, Campbell County, TN, Cumberland County, TN, Fentress County, TN, Knox County, TN, Loudon County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Union County, TN, White County, TN

The radar

The Jackson,KY radar (KJKL), 136 km from the middle of the area, began a volume at 03:44 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 00:00Z, 3.7 hours before the alert went out and 199 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 00:00Z on 2014-10-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 187 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 00:00Z on 2014-10-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 389 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
187 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
1109 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
389 m²/s²
0-3 km storm-relative helicity
568 m²/s²
Significant tornado parameter
0.4
Supercell composite
5.3

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
Oct 14, 6:23 AM CDTMesoscale DiscussionSPCAdair, Barren, Clinton, Cumberland, Green, Metcalfe and 3 more2 hr
Oct 13, 7:33 PM CDTMesoscale DiscussionSPCBedford, Coffee, Franklin, Giles, Lawrence, Lincoln and 3 more57 min
Oct 13, 8:57 PM CDTMesoscale DiscussionSPCBradley, Hamilton, McMinn, Meigs, Polk, Rhea and 1 more2 hr
Oct 13, 10:44 PM CDTTornado WatchSPCBledsoe, Bradley, Hamilton, McMinn, Marion, Meigs and 4 more6 hr
Oct 14, 2:07 AM CDTMesoscale DiscussionSPCMonroe, Polk83 min

Nearby

Mesoscale Discussions in Kentucky, 2014Mesoscale Discussions in Tennessee, 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.