Alert archive / Kentucky / Mesoscale Discussions in 2003

Mesoscale Discussion 382

April 4, 200324 counties in Indiana; 67 counties in Kentucky; 7 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Apr 4, 2003, 10:00 PM EST for 24 counties in Indiana; 67 counties in Kentucky; 7 counties in Ohio. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: Apr 4, 2003, 10:00 PM EST (03:00 UTC)
Expired: Apr 4, 2003, 11:30 PM EST
In force: 90 min
Issued by: the Storm Prediction Center

All 98 counties

Bartholomew County, IN, Clark County, IN, Crawford County, IN, Dearborn County, IN, Decatur County, IN, Dubois County, IN, Fayette County, IN, Floyd County, IN, Franklin County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Lawrence County, IN, Ohio County, IN, Orange County, IN, Perry County, IN, Ripley County, IN, Scott County, IN, Spencer County, IN, Switzerland County, IN, Union County, IN, Warrick County, IN, Washington County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Boone County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Campbell County, KY, Carroll County, KY, Casey County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Fayette County, KY, Franklin County, KY, Gallatin County, KY, Grant County, KY, Graves County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henderson County, KY, Henry County, KY, Hopkins County, KY, Jefferson County, KY, Jessamine County, KY, Kenton County, KY, Larue County, KY, Logan County, KY, Lyon County, KY, Marion County, KY, Marshall County, KY, Mason County, KY, McLean County, KY, Meade County, KY, Mercer County, KY, Metcalfe 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, Scott County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Webster County, KY, Woodford County, KY, Brown County, OH, Butler County, OH, Clermont County, OH, Clinton County, OH, Greene County, OH, Hamilton County, OH, Warren County, OH

The radar

The Louisville radar (KLVX), 35 km from the middle of the area, began a volume at 03:04 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 00:00Z, 3.0 hours before the alert went out and 216 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 628 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1237 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 223 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 4.2

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.

Issued	Product	Office	Counties	Lasted
Apr 4, 7:01 PM EST	Mesoscale Discussion	SPC	Adams, Bartholomew, Blackford, Boone, Brown, Carroll and 45 more	59 min
Apr 4, 7:30 PM EST	Tornado Watch	SPC	Adams, Bartholomew, Blackford, Boone, Brown, Carroll and 41 more	6 hr
Apr 4, 8:07 PM EST	Mesoscale Discussion	SPC	Gibson, Knox, Pike, Posey, Vanderburgh, Warrick	83 min
Apr 4, 10:20 PM EST	Tornado Watch	SPC	Bartholomew, Clark, Crawford, Dearborn, Decatur, Dubois and 21 more	5 hr
Apr 4, 11:38 PM EST	Mesoscale Discussion	SPC	Switzerland	97 min
Apr 5, 12:05 AM EST	Severe Thunderstorm Watch	SPC	Adair, Anderson, Barren, Bath, Bourbon, Boyd and 57 more	5 hr
Apr 5, 2:34 AM EST	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Bath, Bell and 62 more	86 min

Nearby

Mesoscale Discussions in Kentucky, 2003 Mesoscale Discussions in Indiana, 2003 Mesoscale Discussions in Ohio, 2003 Every mesoscale discussion in 2003

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.