Alert archive / Indiana / Mesoscale Discussions in 2005

Mesoscale Discussion 2025

August 19, 200531 counties in Indiana; 15 counties in Kentucky; 13 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Aug 19, 2005, 12:52 AM EST for 31 counties in Indiana; 15 counties in Kentucky; 13 counties in Ohio. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued: Aug 19, 2005, 12:52 AM EST (05:52 UTC)
Expired: Aug 19, 2005, 2:15 AM EST
In force: 83 min
Issued by: the Storm Prediction Center

All 59 counties

Bartholomew County, IN, Boone County, IN, Brown County, IN, Dearborn County, IN, Decatur County, IN, Delaware County, IN, Fayette County, IN, Franklin County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Monroe County, IN, Morgan County, IN, Ohio County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Switzerland County, IN, Union County, IN, Washington County, IN, Wayne County, IN, Boone County, KY, Bracken County, KY, Campbell County, KY, Carroll County, KY, Gallatin County, KY, Grant County, KY, Harrison County, KY, Henry County, KY, Kenton County, KY, Mason County, KY, Nicholas County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Trimble County, KY, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Greene County, OH, Hamilton County, OH, Miami County, OH, Montgomery County, OH, Preble County, OH, Warren County, OH

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.9 hours before the alert went out and 290 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: 2018 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1291 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 7.2

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
Aug 18, 9:53 PM EST	Mesoscale Discussion	SPC	Bartholomew, Benton, Boone, Brown, Carroll, Clay and 33 more	67 min
Aug 18, 10:25 PM EST	Severe Thunderstorm Watch	SPC	Clay, Daviess, Fountain, Greene, Martin, Montgomery and 7 more	8 hr
Aug 19, 4:24 AM EST	Mesoscale Discussion	SPC	Bartholomew, Brown, Clark, Clay, Dearborn, Decatur and 24 more	66 min
Aug 19, 12:49 PM EST	Mesoscale Discussion	SPC	Bartholomew, Brown, Clark, Clay, Crawford, Daviess and 31 more	86 min
Aug 19, 4:09 PM EST	Mesoscale Discussion	SPC	Crawford, Daviess, Dubois, Gibson, Greene, Knox and 8 more	2 hr
Aug 19, 7:16 AM EST	Mesoscale Discussion	SPC	Ashtabula, Carroll, Columbiana, Geauga, Harrison, Jefferson and 5 more	59 min
Aug 19, 1:32 PM EST	Mesoscale Discussion	SPC	Ashland, Ashtabula, Carroll, Columbiana, Coshocton, Cuyahoga and 13 more	118 min

Nearby

Mesoscale Discussions in Indiana, 2005 Mesoscale Discussions in Kentucky, 2005 Mesoscale Discussions in Ohio, 2005 Every mesoscale discussion in 2005

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.