Alert archive / Illinois / Mesoscale Discussions in 2025

Mesoscale Discussion 352

April 2, 202526 counties in Illinois; 8 counties in Indiana

The Storm Prediction Center issued this mesoscale discussion at Apr 2, 2025, 9:48 AM CDT for 26 counties in Illinois; 8 counties in Indiana. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued
Apr 2, 2025, 9:48 AM CDT (14:48 UTC)
Expired
Apr 2, 2025, 11:45 AM CDT
In force
117 min
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch unlikely
Chance of a watch
20%
All 34 counties

Brown County, IL, Cass County, IL, Champaign County, IL, DeWitt County, IL, Ford County, IL, Fulton County, IL, Grundy County, IL, Iroquois County, IL, Kankakee County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Morgan County, IL, Peoria County, IL, Piatt County, IL, Putnam County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Tazewell County, IL, Vermilion County, IL, Woodford County, IL, Benton County, IN, Fountain County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Tippecanoe County, IN, Warren County, IN, White County, IN

The radar

The Lincoln radar (KILX), 46 km from the middle of the area, began a volume at 14:49 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, 2.8 hours before the alert went out and 50 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-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2025-04-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2025-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 948 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
864 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
948 m²/s²
0-3 km storm-relative helicity
1028 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 2, 8:47 AM CDTTornado WatchSPCBond, Calhoun, Clinton, Fayette, Greene, Jersey and 9 more9 hr
Apr 2, 12:51 PM CDTMesoscale DiscussionSPCAlexander, Johnson, Massac, Pope, Pulaski114 min
Apr 2, 2:43 PM CDTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Clinton and 34 more2 hr
Apr 2, 2:52 PM CDTTornado Watch PDSSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more9 hr
Apr 2, 3:17 PM CDTTornado WatchSPCChampaign, Christian, Clark, Clay, Coles, Crawford and 23 more7 hr
Apr 2, 4:19 PM CDTTornado WatchSPCBond, Clinton, Fayette, Macoupin, Madison, Marion and 5 more3 hr
Apr 2, 5:35 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Johnson and 7 more115 min
Apr 2, 5:40 PM CDTMesoscale DiscussionSPCChampaign, Iroquois, Vermilion95 min
Apr 2, 8:31 AM CDTMesoscale DiscussionSPCAdams, Allen, DeKalb, Jay, Wells119 min
Apr 2, 6:22 PM CDTTornado WatchSPCClark, Crawford, Dubois, Floyd, Harrison, Jefferson and 4 more6 hr

Nearby

Mesoscale Discussions in Illinois, 2025Mesoscale Discussions in Indiana, 2025Every mesoscale discussion in 2025

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.