Alert archive / Indiana / Mesoscale Discussions in 2005

Mesoscale Discussion 1884

July 26, 200518 counties in Illinois; 38 counties in Indiana; 8 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jul 26, 2005, 4:59 PM CDT for 18 counties in Illinois; 38 counties in Indiana; 8 counties in Ohio. It was in force for 61 min.

The area

The outline as issued.

The facts

Issued: Jul 26, 2005, 4:59 PM CDT (21:59 UTC)
Expired: Jul 26, 2005, 6:00 PM CDT
In force: 61 min
Issued by: the Storm Prediction Center

All 64 counties

Champaign County, IL, Coles County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Ford County, IL, Iroquois County, IL, Kankakee County, IL, Livingston County, IL, Macon County, IL, McLean County, IL, Moultrie County, IL, Piatt County, IL, Shelby County, IL, Vermilion County, IL, Adams County, IN, Allen County, IN, Benton County, IN, Boone County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, DeKalb County, IN, Elkhart County, IN, Fountain County, IN, Fulton County, IN, Grant County, IN, Howard County, IN, Huntington County, IN, Jasper County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Marshall County, IN, Miami County, IN, Montgomery County, IN, Newton County, IN, Noble County, IN, Parke County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Wabash County, IN, Warren County, IN, Wells County, IN, White County, IN, Whitley County, IN, Defiance County, OH, Fulton County, OH, Henry County, OH, Lucas County, OH, Paulding County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH

The radar

The Chicago radar (KLOT), 111 km from the middle of the area, began a volume at 22:01 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.

Severe Thunderstorm Watch 690Jul 26, 5:40 PM CDT

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.0 hours before the alert went out and 130 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, 2:24 PM CDT	Mesoscale Discussion	SPC	Clay, Crawford, Edwards, Franklin, Gallatin, Hamilton and 13 more	66 min
Jul 26, 2:45 PM CDT	Severe Thunderstorm Watch	SPC	Clay, Crawford, Edwards, Franklin, Gallatin, Hamilton and 16 more	7 hr
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
Jul 26, 1:00 PM CDT	Mesoscale Discussion	SPC	Carroll, Columbiana, Coshocton, Guernsey, Harrison, Holmes and 9 more	90 min
Jul 26, 1:58 PM CDT	Mesoscale Discussion	SPC	Ashland, Carroll, Columbiana, Cuyahoga, Geauga, Harrison and 13 more	62 min

Nearby

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