Alert archive / Indiana / Mesoscale Discussions in 2005

Mesoscale Discussion 1882

July 26, 200519 counties in Illinois; 37 counties in Indiana; Henderson County, Union County, Kentucky

The Storm Prediction Center issued this mesoscale discussion at Jul 26, 2005, 2:24 PM CDT for 19 counties in Illinois; 37 counties in Indiana; Henderson County, Union County, Kentucky. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued: Jul 26, 2005, 2:24 PM CDT (19:24 UTC)
Expired: Jul 26, 2005, 3:30 PM CDT
In force: 66 min
Issued by: the Storm Prediction Center

All 58 counties

Clay County, IL, Crawford County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Jasper County, IL, Jefferson County, IL, Johnson County, IL, Lawrence County, IL, Marion County, IL, Perry County, IL, Richland County, IL, Saline County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Bartholomew County, IN, Brown County, IN, Clay County, IN, Crawford County, IN, Daviess County, IN, Decatur County, IN, Dubois County, IN, Gibson County, IN, Greene 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, Knox County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Orange County, IN, Owen County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Spencer County, IN, Sullivan County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Henderson County, KY, Union County, KY

The radar

The Evansville,IN radar (KVWX), 60 km from the middle of the area, began a volume at 19:22 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

Lincoln, IL (KILX), launched 12:00Z, 7.4 hours before the alert went out and 213 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: 1648 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 892 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.5
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.

Issued	Product	Office	Counties	Lasted
Jul 25, 8:10 PM CDT	Mesoscale Discussion	SPC	Cook, DuPage, Kane, Lake	65 min
Jul 25, 11:25 PM CDT	Severe Thunderstorm Watch	SPC	Boone, Lake, McHenry	5 hr
Jul 26, 10:31 AM CDT	Mesoscale Discussion	SPC	Cass, Champaign, DeWitt, Ford, Fulton, Iroquois and 14 more	89 min
Jul 26, 11:00 AM CDT	Severe Thunderstorm Watch	SPC	Champaign, Clark, Coles, Cumberland, Douglas, Edgar and 5 more	7 hr
Jul 26, 2:45 PM CDT	Severe Thunderstorm Watch	SPC	Clay, Crawford, Edwards, Franklin, Gallatin, Hamilton and 16 more	7 hr
Jul 26, 4:59 PM CDT	Mesoscale Discussion	SPC	Champaign, Coles, Cumberland, DeWitt, Douglas, Edgar and 12 more	61 min
Jul 26, 5:40 PM CDT	Severe Thunderstorm Watch	SPC	Champaign, Clark, Coles, Cumberland, Douglas, Edgar and 8 more	6 hr
Jul 26, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Dearborn, Jay, Ohio, Randolph, Union and 1 more	8 hr

Nearby

Mesoscale Discussions in Indiana, 2005 Mesoscale Discussions in Illinois, 2005 Mesoscale Discussions in Kentucky, 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; radar from the NEXRAD Level II archive.