Alert archive / Indiana / Mesoscale Discussions in 2004

Mesoscale Discussion 1488

July 3, 20044 states

The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2004, 6:16 PM CDT for 4 states. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued: Jul 3, 2004, 6:16 PM CDT (23:16 UTC)
Expired: Jul 3, 2004, 8:15 PM CDT
In force: 119 min
Issued by: the Storm Prediction Center

All 97 counties

Champaign County, IL, Clark County, IL, Crawford County, IL, Edgar County, IL, Ford County, IL, Iroquois County, IL, Kankakee County, IL, Lawrence County, IL, Vermilion County, IL, Wabash County, IL, Adams County, IN, Allen County, IN, Bartholomew County, IN, Benton County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clark County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, Decatur County, IN, DeKalb County, IN, Delaware County, IN, Elkhart County, IN, Fayette County, IN, Fountain County, IN, Franklin County, IN, Fulton County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jackson County, IN, Jasper County, IN, Jay County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Marshall County, IN, Martin County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Newton County, IN, Noble County, IN, Orange County, IN, Owen County, IN, Parke County, IN, Pike County, IN, Porter County, IN, Pulaski County, IN, Putnam County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Saint Joseph County, IN, Scott County, IN, Shelby County, IN, Starke County, IN, Steuben County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Union County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Washington County, IN, Wayne County, IN, Wells County, IN, White County, IN, Whitley County, IN, Trimble County, KY, Allegan County, MI, Berrien County, MI, Branch County, MI, Cass County, MI, Kalamazoo County, MI, Saint Joseph County, MI, Van Buren County, MI

The radar

The Indianapolis radar (KIND), 79 km from the middle of the area, began a volume at 23:16 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

Lincoln, IL (KILX), launched 12:00Z, 11.3 hours before the alert went out and 201 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: 201 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 716 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 3, 11:38 AM CDT	Mesoscale Discussion	SPC	Bureau, Champaign, Clark, Coles, Cook, Crawford and 38 more	2 hr
Jul 3, 12:45 PM CDT	Tornado Watch	SPC	Champaign, Clark, Coles, Crawford, Douglas, Edgar and 8 more	6 hr
Jul 3, 2:44 PM CDT	Mesoscale Discussion	SPC	Cook, DuPage, Grundy, Kane, Kankakee, Kendall and 1 more	2 hr

Nearby

Mesoscale Discussions in Indiana, 2004 Mesoscale Discussions in Illinois, 2004 Mesoscale Discussions in Michigan, 2004 Every mesoscale discussion in 2004

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.