Alert archive / Kentucky / Mesoscale Discussions in 2014

Mesoscale Discussion 1248

July 1, 20146 states

The Storm Prediction Center issued this mesoscale discussion at Jul 1, 2014, 7:29 PM CDT for 6 states. It was in force for 61 min.

The area

The outline as issued.

The facts

Issued
Jul 1, 2014, 7:29 PM CDT (00:29 UTC)
Expired
Jul 1, 2014, 8:30 PM CDT
In force
61 min
Issued by
the Storm Prediction Center
All 57 counties

Greene County, AR, Lawrence County, AR, Clark County, IN, Dearborn County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Ohio County, IN, Switzerland County, IN, Boone County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Campbell County, KY, Carroll County, KY, Christian County, KY, Daviess County, KY, Fulton County, KY, Gallatin County, KY, Grant County, KY, Graves County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Henry County, KY, Hickman County, KY, Hopkins County, KY, Jefferson County, KY, Kenton County, KY, Larue County, KY, Lyon County, KY, Marshall County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Shelby County, KY, Spencer County, KY, Trigg County, KY, Trimble County, KY, Dunklin County, MO, Pemiscot County, MO, Butler County, OH, Clermont County, OH, Clinton County, OH, Hamilton County, OH, Warren County, OH, Dyer County, TN, Lake County, TN, Obion County, TN, Weakley County, TN

The radar

The Ft Campbell radar (KHPX), 89 km from the middle of the area, began a volume at 00:32 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 00:00Z, 0.5 hours before the alert went out and 179 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 2014-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1194 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 2014-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
1194 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
1596 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.9

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
Jul 1, 8:32 PM CDTMesoscale DiscussionSPCCrittenden, Cross2 hr
Jul 2, 1:41 PM CDTMesoscale DiscussionSPCArkansas, Chicot, Desha94 min
Jul 1, 8:15 PM CDTMesoscale DiscussionSPCBath, Bourbon, Boyd, Boyle, Carter, Clark and 16 more3 hr

Nearby

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