Alert archive / Kentucky / Mesoscale Discussions in 2007

Mesoscale Discussion 1379

July 4, 200723 counties in Indiana; 39 counties in Kentucky; Clermont County, Hamilton County, Ohio

The Storm Prediction Center issued this mesoscale discussion at Jul 4, 2007, 11:24 AM EDT for 23 counties in Indiana; 39 counties in Kentucky; Clermont County, Hamilton County, Ohio. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued
Jul 4, 2007, 11:24 AM EDT (15:24 UTC)
Expired
Jul 4, 2007, 12:30 PM EDT
In force
66 min
Issued by
the Storm Prediction Center
All 64 counties

Clark County, IN, Crawford County, IN, Daviess County, IN, Dearborn County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Lawrence County, IN, Martin County, IN, Ohio County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Ripley County, IN, Scott County, IN, Spencer County, IN, Switzerland County, IN, Warrick County, IN, Washington County, IN, Anderson County, KY, Boone County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Breckinridge County, KY, Bullitt County, KY, Campbell County, KY, Carroll County, KY, Clark County, KY, Fayette County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Henry County, KY, Jefferson County, KY, Jessamine County, KY, Kenton County, KY, Madison County, KY, Marion County, KY, Mason County, KY, Meade County, KY, Mercer 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, Clermont County, OH, Hamilton County, OH

The radar

The Louisville radar (KLVX), 59 km from the middle of the area, began a volume at 15:24 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 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, 3.4 hours before the alert went out and 197 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 2007-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 139 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, Cncnati-Daytn, OH at 12:00Z on 2007-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 125 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
139 J/kg
Mixed-layer CIN
-182 J/kg
Mixed-layer LCL
1046 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
125 m²/s²
0-3 km storm-relative helicity
145 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
Jul 4, 1:27 PM EDTMesoscale DiscussionSPCClark, Crawford, Daviess, Dearborn, Dubois, Floyd and 18 more63 min
Jul 4, 1:41 PM EDTTornado WatchSPCDearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more7 hr
Jul 4, 3:00 PM EDTSevere Thunderstorm WatchSPCClark, Crawford, Daviess, Dubois, Floyd, Gibson and 17 more7 hr
Jul 4, 4:13 PM EDTMesoscale DiscussionSPCDearborn, Fayette, Franklin, Ohio, Switzerland, Union and 1 more62 min
Jul 4, 6:14 PM EDTMesoscale DiscussionSPCClark, Crawford, Daviess, Dubois, Floyd, Gibson and 17 more91 min

Nearby

Mesoscale Discussions in Kentucky, 2007Mesoscale Discussions in Indiana, 2007Mesoscale Discussions in Ohio, 2007Every mesoscale discussion in 2007

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.