Alert archive / Indiana / Tornado Warnings in 2025

Tornado Warning 18, NWS Chicago, IL

December 28, 2025Iroquois County, Illinois; Benton County, Jasper County, Newton County, Indiana

NWS Chicago, IL issued this tornado warning at Dec 28, 2025, 4:12 PM CST for Iroquois County, Illinois; Benton County, Jasper County, Newton County, Indiana. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Dec 28, 2025, 4:12 PM CST (22:12 UTC)
Expired: Dec 28, 2025, 5:00 PM CST
In force: 48 min
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Iroquois County, IL, Benton County, IN, Jasper County, IN, Newton County, IN

The radar

The Chicago radar (KLOT), 103 km from the middle of the area, began a volume at 22:12 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Dec 28, 2:47 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.2 hours before the alert went out and 126 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: 45 J/kg
Mixed-layer CIN: -143 J/kg
Mixed-layer LCL: 755 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 232 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before this tornado warning went out at Dec 28, 3:03 PM CST, 1 hour 9 minutes earlier.

Area forecast discussion, Dec 28, 3:03 PM CST, 1 hour 9 minutes before

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Hazardous weather outlook, Dec 28, 3:36 PM CST, 36 minutes before

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In the hours before

Local storm report, Dec 28, 11:07 AM CST, 5 hours 5 minutes before

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Local storm report, Dec 28, 11:11 AM CST, 5 hours 1 minute before

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Local storm report, Dec 28, 12:00 PM CST, 4 hours 12 minutes before

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Local storm report, Dec 28, 1:34 PM CST, 2 hours 38 minutes before

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Special weather statement, Dec 28, 2:56 PM CST, 1 hour 16 minutes before

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Local storm report, Dec 28, 3:48 PM CST, 24 minutes before

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The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 27, 10:18 PM CST	Gale Warning	LOT		47 hr
Dec 27, 10:18 PM CST	Marine Dense Fog Advisory	LOT		19 hr
Dec 28, 3:09 AM CST	Dense Fog Advisory	LOT	Boone, Cook, DeKalb, DuPage, Kane, Kendall and 6 more	6 hr
Dec 28, 3:56 AM CST	Storm Warning	LOT		35 hr
Dec 28, 10:12 AM CST	Severe Thunderstorm Warning	LOT	Ford, Livingston	63 min
Dec 28, 10:54 AM CST	Severe Thunderstorm Warning	LOT	Iroquois	51 min
Dec 28, 1:17 PM CST	Areal Flood Advisory	LOT	Cook, Kankakee, Will	5 hr
Dec 28, 2:49 PM CST	Severe Thunderstorm Warning	LOT	Livingston	41 min
Dec 28, 2:56 PM CST	Special Weather Statement	LOT	Grundy	34 min
Dec 28, 3:11 PM CST	Severe Thunderstorm Warning	LOT	Ford, Iroquois	34 min
Dec 28, 3:25 PM CST	Tornado Warning	LOT	Ford, Iroquois	20 min
Dec 28, 3:33 PM CST	Tornado Warning	LOT	Iroquois, Kankakee	27 min
Dec 28, 3:42 PM CST	Severe Thunderstorm Warning	LOT	Ford, Iroquois	33 min
Dec 28, 3:58 PM CST	Tornado Warning Tornado observed	LOT	Iroquois, Kankakee	32 min
Dec 28, 4:18 PM CST	Tornado Warning	LOT	Jasper	27 min
Dec 28, 4:45 PM CST	Tornado Warning	LOT	Jasper	12 min

Nearby

Tornado Warnings in Indiana, 2025 Tornado Warnings in Illinois, 2025 Every tornado warning in 2025 Tornadoes 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.