Alert archive / Illinois / Tornado Warnings in 2026

Tornado Warning 34, NWS Lincoln, IL

April 2, 2026Knox County, Stark County, Illinois

NWS Lincoln, IL issued this tornado warning at Apr 2, 2026, 5:47 PM CDT for Knox County, Stark County, Illinois. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 2, 2026, 5:47 PM CDT (22:47 UTC)
Expired
Apr 2, 2026, 6:30 PM CDT
In force
43 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Knox County, IL, Stark County, IL

The radar

The Quad Cities radar (KDVN), 80 km from the middle of the area, began a volume at 22:48 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 2, 1:43 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.8 hours before the alert went out and 153 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 2026-04-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 19 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2026-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 453 square meters per square second.193958Sfc1 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
19 J/kg
Mixed-layer CIN
-278 J/kg
Mixed-layer LCL
846 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
453 m²/s²
0-3 km storm-relative helicity
450 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

200 
WFUS53 KILX 022247
TORILX
ILC095-175-022330-
/O.NEW.KILX.TO.W.0034.260402T2247Z-260402T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
547 PM CDT Thu Apr 2 2026

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  Stark County in north central Illinois...
  Northeastern Knox County in west central Illinois...

* Until 630 PM CDT.

* At 547 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Victoria, or 13 miles west of Toulon, moving
  northeast at 50 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...
  La Fayette around 555 PM CDT.
  Toulon around 600 PM CDT.
  Elmira around 605 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Osceola and Bradford.

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 4123 8964 4109 8964 4100 9007 4115 9013
      4115 8987 4123 8986
TIME...MOT...LOC 2247Z 244DEG 45KT 4105 9012 

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

$$

Deubelbeiss
2 follow-up statements
792 
WWUS53 KILX 022303
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
603 PM CDT Thu Apr 2 2026

ILC095-022313-
/O.CAN.KILX.TO.W.0034.000000T0000Z-260402T2330Z/
Knox-
603 PM CDT Thu Apr 2 2026

...THE TORNADO WARNING FOR NORTHEASTERN KNOX COUNTY IS CANCELLED...

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

A Tornado Watch remains in effect until 800 PM CDT for north central
Illinois.

&&

LAT...LON 4123 8964 4109 8964 4102 8998 4115 8998
      4115 8987 4123 8986
TIME...MOT...LOC 2303Z 243DEG 44KT 4113 8989 

$$

ILC175-022330-
/O.CON.KILX.TO.W.0034.000000T0000Z-260402T2330Z/
Stark-
603 PM CDT Thu Apr 2 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR STARK
COUNTY...

At 603 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Toulon, moving northeast at 50 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...
  Osceola and Elmira around 610 PM CDT.
  Bradford around 615 PM CDT.

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 4123 8964 4109 8964 4102 8998 4115 8998
      4115 8987 4123 8986
TIME...MOT...LOC 2303Z 243DEG 44KT 4113 8989 

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

$$

Deubelbeiss
998 
WWUS53 KILX 022328
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
628 PM CDT Thu Apr 2 2026

ILC175-022337-
/O.EXP.KILX.TO.W.0034.000000T0000Z-260402T2330Z/
Stark-
628 PM CDT Thu Apr 2 2026

...THE TORNADO WARNING FOR STARK COUNTY WILL EXPIRE AT 630 PM CDT...

The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However, gusty
winds and heavy rain are still possible with this thunderstorm.

A Tornado Watch remains in effect until 800 PM CDT for north central
Illinois.

&&

LAT...LON 4123 8964 4109 8964 4102 8998 4115 8998
      4115 8987 4123 8986
TIME...MOT...LOC 2327Z 244DEG 45KT 4126 8953 

$$

Deubelbeiss

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 Lincoln, IL wrote its last area forecast discussion before this tornado warning went out at Apr 2, 11:40 AM CDT, 6 hours 7 minutes earlier. Its key messages:

  • This afternoon and evening, strong winds pose a double threat. Non-thunderstorm gusts are expected to reach 40-50 mph. Furthermore, thunderstorm wind gusts could be stronger, ranging from 55 to 75 mph. Given the recently saturated soils, these high winds will not only create difficulties for high- profile vehicles but also present a risk of uprooted trees.
  • In addition to the damaging wind concerns, there remains a localized threat for tornadoes and large hail through this evening as a cold front pushes through the region.
  • Another round of severe weather and potential flooding is expected Friday afternoon and evening. Rainfall totals between Friday and Saturday have a medium-high probability (50-70%) of exceeding 1 inch areawide.
  • Overnight lows are likely (50-80% chance) to fall into the mid 30s or lower each morning Sunday through Tuesday. Action may be needed to protect newly- emerged, tender vegetation.
Area forecast discussion, Apr 2, 11:40 AM CDT, 6 hours 7 minutes before
Area Forecast Discussion
National Weather Service Lincoln IL
1140 AM CDT Thu Apr 2 2026

.KEY MESSAGES...

- This afternoon and evening, strong winds pose a double
  threat. Non-thunderstorm gusts are expected to reach 40-50
  mph. Furthermore, thunderstorm wind gusts could be stronger,
  ranging from 55 to 75 mph. Given the recently saturated soils,
  these high winds will not only create difficulties for high-
  profile vehicles but also present a risk of uprooted trees.

- In addition to the damaging wind concerns, there remains a
  localized threat for tornadoes and large hail through this
  evening as a cold front pushes through the region.

- Another round of severe weather and potential flooding is
  expected Friday afternoon and evening. Rainfall totals between
  Friday and Saturday have a medium-high probability (50-70%)
  of exceeding 1 inch areawide.

- Overnight lows are likely (50-80% chance) to fall into the
  mid 30s or lower each morning Sunday through Tuesday. Action
  may be needed to protect newly- emerged, tender vegetation.

&&

.DISCUSSION...(through next Wednesday)
Issued at 1133 AM CDT Thu Apr 2 2026

A quick glance at the mid-level water vapor imagery depicts our
compact, negatively-tilted shortwave trough lifting across the
Missouri Valley with its attendant surface low positioned over
central Iowa.

Scattered, elevated morning convection has been observed out
ahead of the cold front within a broad warm sector and beneath
strong ascent characterized by an upper-level difluent zone and
strong kinematic profile.

High-resolution model guidance consistently predicts widespread
thunderstorms developing across west-central Illinois early
this afternoon. The environment, characterized by surface
temperatures in the low 70s and dewpoints in the low 60s, is
expected to quickly destabilize due to low-level jet (LLJ)
moisture transport, synoptic lift, and adiabatic cooling aloft.

With MLCAPE values ranging from 500-1500 J/kg and deep-layer
shear between 40-50 kts, supercells and multicell clusters are
anticipated this afternoon and evening as a pre-frontal trough
advances from the west. The robust low-level wind field,
highlighted by a 60 kt LLJ core veering ahead of the cold front,
will promote rapidly rotating updrafts. This potential is well-
supported by 0-3 km Storm Relative Helicity (SRH) values
exceeding 300 m2/s2 and a pronounced, humped low-level
hodograph.

While the parameter space clearly supports a tornado threat
this afternoon through early evening across central Illinois,
the uncapped warm sector will likely hinder supercells from
staying discrete. The reality may be a much messier storm-scale
environment with numerous mergers, nudgers, and boundary
interactions.

Aside from the tornado risk, a significant wind threat also
exists given the top-shelf kinematic field in place. The
momentum transfer augmented by precip-loading within any storm
this afternoon and evening has the potential to put down 60 mph
gusts, with the upshot being 75 mph gusts within any bowing
segments or RFD surges that develop.

The hail risk might be highest later this evening behind the
pre-frontal trough and immediately along the cold front as a
mid-level cold pocket overtakes the front and increases CAPEs
through the hail growth zone. The current outlook supports hail
up to the size of golf balls.

Storms will exit the area late this evening, moving from
northwest to southeast, as the cold front traverses central
Illinois and becomes stationary. This stalled front will quickly
retreat northward on Friday as a warm front, ahead of a
significant upper-level trough that will track across the
Missouri Valley toward the Upper-Mississippi Valley.

This approaching disturbance and its associated surface low
will set the stage for another round of nocturnal convection in
central Illinois on Friday evening, likely taking the form of a
decaying squall line pushing into west-central Illinois
overnight.

While a damaging wind risk is possible upon the squall lines
arrival, the primary concern is the potential for flooding.
Despite diminishing instability overnight, strong isentropic
ascent preceding the front and weak low-pressure development
along the front are expected to produce a long-duration rainfall
event through Saturday morning. With the ground already
saturated from recent heavy rains, widespread urban and small
stream flooding, and potentially localized flash flooding, is
anticipated by Saturday morning. Recent NBM guidance supports a
medium-high probability (50-70%) of exceeding 1” during the
Friday-Saturday timeframe.

A transition to a drier and seasonably cool pattern is expected
next week as elongated surface high pressure establishes itself
over the central US. Current NBM guidance consistently
forecasts daily high temperatures in the 50s from Sunday through
Tuesday, with overnight lows in the 30s, raising renewed
concerns for frost and freeze given the start of the growing
season. Temperatures are then anticipated to rebound to warmer
levels by the middle of next week as the high pressure system
moves out and a southerly flow returns across the Plains and
Midwest.

&&

.AVIATION /18Z TAFS THROUGH 18Z FRIDAY/...
Issued at 1133 AM CDT Thu Apr 2 2026

A warm front lifting through the area has brought an end to
LIFR ceilings, IFR/MVFR visibilities, while scattered showers
continue through late morning. During the afternoon,
instability will increase favoring a few thunderstorms, with the
highest confidence between 18z-21z when a several models are
showing scattered storms developing over the regional terminals.
A second wave of thunderstorms may then develop along a cold
front later this evening from 23z-05z, but confidence is lower
during this timeframe and has otherwise been covered with a
PROB30 mention in the TAFs.

Besides storms, south winds will remain quite strong,
especially from 18z-00z when gusts may reach 40 kt at times.
Those winds will ease and shift to a more westerly direction
behind the front overnight, eventually veering all the way back
around to the SE/S by late in this TAF period.

&&

.ILX WATCHES/WARNINGS/ADVISORIES...
Wind Advisory until 7 PM CDT this evening for ILZ027>031-036-
037-040-041-047>050.
Wind Advisory until 7 PM CDT this evening for ILZ038-042>046-
051>057-061>063-066>068-071>073.

&&

KEY MESSAGES...MJA
DISCUSSION...MJA
AVIATION...MJA
Hazardous weather outlook, Apr 2, 3:05 PM CDT, 2 hours 42 minutes before
Hazardous Weather Outlook
National Weather Service Lincoln IL
305 PM CDT Thu Apr 2 2026

ILZ027>031-036>038-040>043-047>053-031100-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler-
Mason-Logan-De Witt-Cass-Menard-Scott-Morgan-Sangamon-Christian-
Macon-
305 PM CDT Thu Apr 2 2026

This Hazardous Weather Outlook is for central Illinois and west
central Illinois.

.DAY ONE...Tonight.

Scattered thunderstorms are expected through the first half of the
evening, with the highest threat of severe weather near and west of
the Illinois River. Damaging winds, potentially as high as 75 mph,
will be the primary threat, though large hail and a few tornadoes are
also possible.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Another round of severe storms is forecast Friday night into the
overnight hours, with all hazards possible.

Minor flooding may develop along portions of the Illinois River
early next week, mainly from Havana to Beardstown.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed until 9 pm.

Expected storm motion is toward the northeast, around 50 mph.

ILZ044>046-054>057-061>063-066>068-071>073-031100-
Piatt-Champaign-Vermilion-Moultrie-Douglas-Coles-Edgar-Shelby-
Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
305 PM CDT Thu Apr 2 2026

This Hazardous Weather Outlook is for east central Illinois and
southeast Illinois.

.DAY ONE...Tonight.

Periods of thunderstorms are expected through the evening, lingering
past midnight south of I-70. Some of the storms will be severe.
Damaging winds, potentially as high as 60 to 70 mph, will be the
primary threat, though there is also a low threat of tornadoes.

Outside of the storms, strong south winds with gusts 40 to 50 mph
will continue into early evening. This could cause difficult driving
conditions for high profile vehicles, especially on east west
oriented roadways.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Thunderstorms are expected to develop again by late afternoon Friday,
and continue into the first part of Saturday. Some of the storms may
be strong after midnight Friday night.

Minor flooding is possible along the Wabash River, beginning this
weekend.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed through this evening.

Expected storm motion is toward the northeast, around 50 mph.

Geelhart

In the hours before

Local storm report, Apr 2, 2:28 PM CDT, 3 hours 19 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
228 PM CDT Thu Apr 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0210 PM     Rain             1 NNW Galesburg         40.96N 90.37W
04/02/2026  M1.42 Inch       Knox               IL   Mesonet

            Mesonet station DW8259 Galesburg.

0700 AM     Rain             Yates City              40.78N 90.02W
04/02/2026  M1.38 Inch       Knox               IL   CO-OP Observer

            CO-OP Observer station YATI2 Yates City.

0700 AM     Rain             3 N Galesburg           40.99N 90.38W
04/02/2026  M1.22 Inch       Knox               IL   Cocorahs

            Cocorahs station IL-KX-24 Galesburg 2.5 N.

0346 AM     Rain             1 NNE Rantoul           40.32N 88.14W
04/02/2026  M1.20 Inch       Champaign          IL   Cocorahs

            Cocorahs station IL-CP-149 Rantoul 1.1 NE.

0630 AM     Rain             2 WSW Elmore            40.95N 90.01W
04/02/2026  M1.19 Inch       Knox               IL   Cocorahs

            Cocorahs station IL-KX-23 Williamsfield 1.7
            NNE.

0800 AM     Rain             Knoxville               40.90N 90.29W
04/02/2026  M1.16 Inch       Knox               IL   CO-OP Observer

            CO-OP Observer station KNXI2 Knoxville.

0700 AM     Rain             3 NE East Galesburg     40.97N 90.27W
04/02/2026  M1.09 Inch       Knox               IL   Cocorahs

            Cocorahs station IL-KX-26 Galesburg 5.7 E.

0700 AM     Rain             3 S Henry               41.07N 89.35W
04/02/2026  M1.02 Inch       Marshall           IL   Cocorahs

            Cocorahs station IL-MH-8 3 S Henry.

&&
Local storm report, Apr 2, 2:36 PM CDT, 3 hours 11 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
236 PM CDT Thu Apr 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0204 PM     Non-Tstm Wnd Dmg Mahomet                 40.19N 88.40W
04/02/2026                   Champaign          IL   Broadcast Media

            Corrects previous non-tstm wnd dmg report
            from Mahomet. Tree blown down on Marietta
            drive in Mahomet.

&&

07
Local storm report, Apr 2, 3:42 PM CDT, 2 hours 5 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
342 PM CDT Thu Apr 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1200 PM     Rain             Henry                   41.11N 89.36W
04/02/2026  M1.08 Inch       Marshall           IL   Public

&&
Local storm report, Apr 2, 4:02 PM CDT, 1 hour 45 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
402 PM CDT Thu Apr 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     Rain             1 W Galesburg           40.95N 90.39W
04/02/2026  M1.28 Inch       Knox               IL   CO-OP Observer

            CO-OP Observer station GBGI2 Galesburg.

0355 PM     Rain             Galesburg Airport       40.93N 90.43W
04/02/2026  M1.11 Inch       Knox               IL   AWOS

            AWOS station KGBG Galesburg Arpt.

0700 AM     Rain             3 NNW Sparland          41.08N 89.47W
04/02/2026  M1.09 Inch       Marshall           IL   Cocorahs

            Cocorahs station IL-MH-4 Sparland 3.4 NNW.

0700 AM     Rain             1 NW Knoxville          40.91N 90.29W
04/02/2026  M1.03 Inch       Knox               IL   Cocorahs

            Cocorahs station IL-KX-9 Knoxville 0.7 NW.

&&
Local storm report, Apr 2, 4:49 PM CDT, 58 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
449 PM CDT Thu Apr 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0423 PM     Non-Tstm Wnd Gst 1 NW Lincoln            40.16N 89.37W
04/02/2026  M52 MPH          Logan              IL   Public

&&
Local storm report, Apr 2, 5:44 PM CDT, 3 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
544 PM CDT Thu Apr 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0532 PM     Funnel Cloud     Galesburg               40.95N 90.37W
04/02/2026                   Knox               IL   Fire Dept/Rescue

            Funnel reported on south side of Galesburg.

&&

Shimon

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 2, 4:38 PM CDTSevere Thunderstorm WarningILXChampaign, Douglas, Vermilion52 min
Apr 2, 5:12 PM CDTSevere Thunderstorm WarningILXVermilion33 min
Apr 2, 5:19 PM CDTTornado WarningILXKnox41 min
Apr 2, 6:00 PM CDTSevere Thunderstorm WarningILXFulton, Knox45 min
Apr 2, 6:16 PM CDTTornado WarningILXKnox, Peoria29 min
Apr 2, 6:31 PM CDTSevere Thunderstorm WarningILXFulton, Knox, Marshall, Peoria, Stark44 min
Apr 2, 6:33 PM CDTTornado WarningILXMarshall, Peoria, Stark24 min
Apr 2, 6:55 PM CDTSevere Thunderstorm WarningILXMarshall, Peoria, Woodford50 min

Nearby

Tornado Warnings in Illinois, 2026Every tornado warning in 2026Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.