Alert archive / Illinois / Tornado Warnings in 2026

Tornado Warning 140, NWS Lincoln, IL

August 11, 2026Champaign County, Douglas County, Piatt County, Illinois

NWS Lincoln, IL issued this tornado warning at Aug 11, 2026, 3:25 PM CDT for Champaign County, Douglas County, Piatt County, Illinois. It was in force for 50 min. 6 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 11, 2026, 3:25 PM CDT (20:25 UTC)
Expired: Aug 11, 2026, 4:15 PM CDT
In force: 50 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Champaign County, IL, Douglas County, IL, Piatt County, IL

The radar

The Lincoln radar (KILX), 88 km from the middle of the area, began a volume at 20:28 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.

What was reported inside it

Time	Report	Where	Remark
Aug 11, 3:29 PM CDT	FUNNEL CLOUD	2 Ssw Seymour, IL	Funnel cloud spotted at 1300 N 100 E moving ESE.
Aug 11, 3:29 PM CDT	TORNADO	3 S Seymour, IL
Aug 11, 3:33 PM CDT	TSTM WND DMG	2 Nnw Sadorus, IL	Shed partially collapsed with two walls and roof removed. Time estimated from radar.
Aug 11, 3:38 PM CDT	TSTM WND DMG	Pesotum, IL	Several trees and tree limbs down were blown down.
Aug 11, 3:40 PM CDT	TSTM WND DMG	Tolono, IL	Several large trees snapped near their base with multiple areas of fencing blown down. Time estimated from radar.
Aug 11, 3:42 PM CDT	TSTM WND DMG	1 Ne Tolono, IL	Large tree limbs down at the Tolono East Side Park.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.4 hours before the alert went out and 29 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: 2617 J/kg
Mixed-layer CIN: -144 J/kg
Mixed-layer LCL: 1547 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

As transmitted.

206 
WFUS53 KILX 112025
TORILX
ILC019-041-147-112115-
/O.NEW.KILX.TO.W.0140.260811T2025Z-260811T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
325 PM CDT Tue Aug 11 2026

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  East central Piatt County in central Illinois...
  Southern Champaign County in east central Illinois...
  Northeastern Douglas County in east central Illinois...

* Until 415 PM CDT.

* At 325 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Seymour, or near Monticello, moving southeast at
  45 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Champaign around 330 PM CDT.
  Savoy, Tolono, Sadorus, and Willard Airport around 335 PM CDT.
  Philo around 345 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Broadlands.

This includes the following highways...
 Interstate 57 between mile markers 217 and 235.
 Interstate 72 between mile markers 167 and 182.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4002 8859 4018 8848 4003 8795 3974 8799
TIME...MOT...LOC 2025Z 297DEG 39KT 4007 8845 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Auten

4 follow-up statements

360 
WWUS53 KILX 112035
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
335 PM CDT Tue Aug 11 2026

ILC019-041-147-112115-
/O.CON.KILX.TO.W.0140.000000T0000Z-260811T2115Z/
Piatt-Champaign-Douglas-
335 PM CDT Tue Aug 11 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR EAST
CENTRAL PIATT...SOUTHERN CHAMPAIGN AND NORTHEASTERN DOUGLAS
COUNTIES...

At 334 PM CDT, a confirmed tornado was located between Sadorus and Seymour, or 8
miles southwest of Champaign, moving southeast at 40 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Weather spotters confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornado will be near...
  Tolono, Pesotum, and Willard Airport around 340 PM CDT.
  Villa Grove around 350 PM CDT.
  Broadlands around 400 PM CDT.
  Newman around 405 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Longview, Murdock, and Fairland.

This includes the following highways...
 Interstate 57 between mile markers 217 and 235.
 Interstate 72 between mile markers 167 and 182.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4002 8859 4018 8848 4003 8795 3974 8799
TIME...MOT...LOC 2034Z 298DEG 36KT 4001 8835 

TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN

$$

Auten

549 
WWUS53 KILX 112038
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
338 PM CDT Tue Aug 11 2026

ILC147-112048-
/O.CAN.KILX.TO.W.0140.000000T0000Z-260811T2115Z/
Piatt-
338 PM CDT Tue Aug 11 2026

...THE TORNADO WARNING FOR EAST CENTRAL PIATT COUNTY IS CANCELLED...

The tornadic thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

&&

LAT...LON 3995 8840 4005 8837 4003 8795 3974 8799
TIME...MOT...LOC 2038Z 302DEG 39KT 3998 8829 

$$

ILC019-041-112115-
/O.CON.KILX.TO.W.0140.000000T0000Z-260811T2115Z/
Champaign-Douglas-
338 PM CDT Tue Aug 11 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR SOUTHERN
CHAMPAIGN AND NORTHEASTERN DOUGLAS COUNTIES...

At 338 PM CDT, a confirmed tornado was located over Tolono, or 9
miles south of Champaign, moving southeast at 45 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Weather spotters confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornado will be near...
  Villa Grove and Pesotum around 345 PM CDT.
  Newman around 400 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Longview, Murdock, and Fairland.

This includes Interstate 57 between mile markers 218 and 229.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3995 8840 4005 8837 4003 8795 3974 8799
TIME...MOT...LOC 2038Z 302DEG 39KT 3998 8829 

TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN

$$

Auten

515 
WWUS53 KILX 112045
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
345 PM CDT Tue Aug 11 2026

ILC019-041-112115-
/O.CON.KILX.TO.W.0140.000000T0000Z-260811T2115Z/
Champaign-Douglas-
345 PM CDT Tue Aug 11 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR
SOUTHEASTERN CHAMPAIGN AND NORTHEASTERN DOUGLAS COUNTIES...

At 344 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Tolono, or 10 miles north of Tuscola, moving
southeast at 45 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Villa Grove around 350 PM CDT.
  Broadlands around 355 PM CDT.
  Newman around 400 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Longview, Murdock, and Fairland.

This includes Interstate 57 between mile markers 218 and 220.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3990 8830 4002 8823 4003 8795 3974 8799
TIME...MOT...LOC 2044Z 297DEG 39KT 3995 8820 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Auten

319 
WWUS53 KILX 112110
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
410 PM CDT Tue Aug 11 2026

ILC019-041-112119-
/O.EXP.KILX.TO.W.0140.000000T0000Z-260811T2115Z/
Champaign-Douglas-
410 PM CDT Tue Aug 11 2026

...THE TORNADO WARNING FOR SOUTHEASTERN CHAMPAIGN AND NORTHEASTERN
DOUGLAS COUNTIES WILL EXPIRE AT 415 PM CDT...

The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

Remember, a Severe Thunderstorm Warning still remains in effect for
Northern Edgar, Southern Vermilion, Southeast Champaign, and Northeast 
Douglas until 445 PM CDT.

&&

LAT...LON 3990 8830 4002 8823 4003 8795 3974 8799
TIME...MOT...LOC 2109Z 297DEG 39KT 3983 8791 

$$

Auten

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 9:44 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ILX	Marshall	46 min
Aug 11, 1:57 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Vermilion	63 min
Aug 11, 2:50 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, McLean, Piatt	40 min
Aug 11, 3:17 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ILX	Champaign, Piatt	43 min
Aug 11, 3:52 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Douglas, Edgar, Vermilion	53 min
Aug 11, 4:22 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Edgar	38 min
Aug 11, 5:30 PM CDT	Severe Thunderstorm Warning	ILX	Clark	45 min

Nearby

Tornado Warnings in Illinois, 2026 Every tornado warning in 2026 Tornadoes in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.