Alert archive / Indiana / Mesoscale Discussions in 2005

Mesoscale Discussion 1776

July 18, 20059 counties in Illinois; 26 counties in Indiana; 25 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jul 18, 2005, 5:36 PM CDT for 9 counties in Illinois; 26 counties in Indiana; 25 counties in Ohio. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued: Jul 18, 2005, 5:36 PM CDT (22:36 UTC)
Expired: Jul 18, 2005, 6:30 PM CDT
In force: 54 min
Issued by: the Storm Prediction Center

All 60 counties

Clark County, IL, Clay County, IL, Crawford County, IL, Effingham County, IL, Jasper County, IL, Lawrence County, IL, Marion County, IL, Richland County, IL, Wayne County, IL, Adams County, IN, Blackford County, IN, Boone County, IN, Clay County, IN, Delaware County, IN, Fayette County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Jay County, IN, Johnson County, IN, Madison County, IN, Marion County, IN, Monroe County, IN, Morgan County, IN, Owen County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Sullivan County, IN, Vigo County, IN, Wayne County, IN, Wells County, IN, Allen County, OH, Ashland County, OH, Auglaize County, OH, Champaign County, OH, Crawford County, OH, Darke County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Huron County, OH, Logan County, OH, Marion County, OH, Mercer County, OH, Miami County, OH, Morrow County, OH, Putnam County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Union County, OH, Van Wert County, OH, Wayne County, OH, Wood County, OH, Wyandot County, OH

The radar

The Indianapolis radar (KIND), 37 km from the middle of the area, began a volume at 22:37 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.6 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-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: 1058 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 594 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.4

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 18, 11:29 AM CDT	Mesoscale Discussion	SPC	Champaign, Coles, DeWitt, Douglas, Edgar, Ford and 11 more	2 hr
Jul 18, 12:10 PM CDT	Severe Thunderstorm Watch	SPC	Champaign, Iroquois, Vermilion	7 hr
Jul 18, 1:17 PM CDT	Mesoscale Discussion	SPC	Champaign, Iroquois, Vermilion	118 min
Jul 18, 3:24 PM CDT	Mesoscale Discussion	SPC	Champaign, Iroquois, Vermilion	2 hr

Nearby

Mesoscale Discussions in Indiana, 2005 Mesoscale Discussions in Ohio, 2005 Mesoscale Discussions in Illinois, 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.