Alert archive / Illinois / Mesoscale Discussions in 2003

Mesoscale Discussion 1323

June 11, 200311 counties in Illinois; 10 counties in Indiana

The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2003, 1:19 PM CDT for 11 counties in Illinois; 10 counties in Indiana. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: Jun 11, 2003, 1:19 PM CDT (18:19 UTC)
Expired: Jun 11, 2003, 3:15 PM CDT
In force: 116 min
Issued by: the Storm Prediction Center

All 21 counties

DeWitt County, IL, Ford County, IL, Fulton County, IL, Iroquois County, IL, Livingston County, IL, Mason County, IL, McLean County, IL, Peoria County, IL, Schuyler County, IL, Tazewell County, IL, Woodford County, IL, Benton County, IN, Cass County, IN, Fulton County, IN, Huntington County, IN, Jasper County, IN, Miami County, IN, Newton County, IN, Pulaski County, IN, Wabash County, IN, White County, IN

The radar

The Lincoln radar (KILX), 70 km from the middle of the area, began a volume at 18:22 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 nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 6.3 hours before the alert went out and 44 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: 589 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 488 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 13 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
Jun 10, 7:28 PM CDT	Mesoscale Discussion	SPC	Randolph	3 hr
Jun 10, 7:57 PM CDT	Mesoscale Discussion	SPC	Clark, Crawford, Daviess, Dubois, Floyd, Gibson and 18 more	2 hr

Nearby

Mesoscale Discussions in Illinois, 2003 Mesoscale Discussions in Indiana, 2003 Every mesoscale discussion in 2003

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.