Alert archive / Illinois / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 104, NWS Lincoln, IL

March 31, 2026DeWitt County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Mar 31, 2026, 11:44 PM CDT for DeWitt County, Illinois. It was in force for 17 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
Mar 31, 2026, 11:44 PM CDT (04:44 UTC)
Expired
Apr 1, 2026, 12:01 AM CDT
In force
17 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County DeWitt County, IL

The radar

The Lincoln radar (KILX), 37 km from the middle of the area, began a volume at 04:46 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 4.7 hours before the alert went out and 444 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, Cncnati-Daytn, OH at 00:00Z on 2026-04-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 380 joules per kilogram.LCLLFCEL10008507005003002001001 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, Cncnati-Daytn, OH at 00:00Z on 2026-04-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 173 square meters per square second.19395878Sfc1 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
380 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1683 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
173 m²/s²
0-3 km storm-relative helicity
358 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Mar 31, 6:10 PM CDT, 5 hours 34 minutes earlier.

Area forecast discussion, Mar 31, 6:10 PM CDT, 5 hours 34 minutes before
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Hazardous weather outlook, Mar 31, 2:55 PM CDT, 8 hours 49 minutes before
Hazardous Weather Outlook
National Weather Service Lincoln IL
255 PM CDT Tue Mar 31 2026

ILZ027>031-036-037-040-041-047-049-050-011100-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-Schuyler-Mason-
Cass-Scott-Morgan-
255 PM CDT Tue Mar 31 2026

This Hazardous Weather Outlook is for central Illinois and west
central Illinois, mainly near and west of the Illinois River.

.DAY ONE...Tonight.

Thunderstorms are expected to develop by early evening, with the
threat diminishing from north to south later tonight as a front
moves through the area. Some of the storms may be strong or locally
severe, with large hail the main threat.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Periods of showers and storms will continue into the first part of
the weekend. There is a 50 to 60 percent chance of exceeding 2
inches through the weekend, which may result in localized flooding
and rises along area waterways.

Ahead of a cold front Thursday afternoon and evening, there is a risk
of strong to severe thunderstorms. Damaging winds, large hail, and a
few tornadoes are possible.

Cooler weather arrives early next week, and there is a 40 to 60
percent chance of temperatures below freezing Sunday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed through about 8 pm.

ILZ038-042>046-048-051>057-061-011100-
McLean-Logan-De Witt-Piatt-Champaign-Vermilion-Menard-Sangamon-
Christian-Macon-Moultrie-Douglas-Coles-Edgar-Shelby-
255 PM CDT Tue Mar 31 2026

This Hazardous Weather Outlook is for central Illinois and east
central Illinois, generally from near the I-55 corridor east to the
Indiana border.

.DAY ONE...Tonight.

Thunderstorms are expected to develop by early evening, with the
threat diminishing from north to south later tonight as a front
moves through the area. Some of the storms may be strong or locally
severe, with large hail the main threat.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Periods of showers and storms will continue into the first part of
the weekend. There is a 50 to 60 percent chance of exceeding 2
inches through the weekend, which may result in localized flooding
and rises along area waterways.

Ahead of a cold front Thursday afternoon and evening, there is a risk
of strong to severe thunderstorms. Damaging winds, large hail, and a
few tornadoes are possible. Also, windy conditions are likely ahead
of the storms Thursday, with gusts of 40 to 45 mph most likely near
and east of I-57.

Cooler weather arrives early next week, and there is a 40 to 60
percent chance of temperatures below freezing Sunday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed between 6 pm and midnight.

ILZ062-063-066>068-071>073-011100-
Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
255 PM CDT Tue Mar 31 2026

This Hazardous Weather Outlook is for southeast Illinois.

.DAY ONE...Tonight.

Scattered thunderstorms are expected to redevelop this evening, and
will be most numerous near I-70. A few of the storms may produce
large hail.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Periods of showers and storms will continue into the first part of
the weekend. There is a 30 to 50 percent chance of exceeding 2
inches through the weekend.

Ahead of a cold front Thursday afternoon and evening, there is a
risk of strong to severe thunderstorms. Damaging winds and large
hail are most likely.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed after 8 pm.

Geelhart

In the hours before

Special weather statement, Mar 31, 9:56 PM CDT, 1 hour 48 minutes before
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Special weather statement, Mar 31, 10:36 PM CDT, 1 hour 8 minutes before
Special Weather Statement
National Weather Service Lincoln IL
1036 PM CDT Tue Mar 31 2026

ILZ043-010400-
De Witt-
1036 PM CDT Tue Mar 31 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN DE WITT COUNTY
THROUGH 1100 PM CDT...

At 1035 PM CDT, Doppler radar was tracking a strong thunderstorm over
Kenney, or near Clinton, moving east at 30 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Clinton, Kenney, Lane, and Weldon Springs State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4005 8912 4011 8912 4019 8885 4006 8881
TIME...MOT...LOC 0335Z 256DEG 24KT 4008 8904

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

37
Special weather statement, Mar 31, 11:06 PM CDT, 38 minutes before
Special Weather Statement
National Weather Service Lincoln IL
1106 PM CDT Tue Mar 31 2026

ILZ043-044-010430-
Piatt-De Witt-
1106 PM CDT Tue Mar 31 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN PIATT AND EAST CENTRAL
DE WITT COUNTIES THROUGH 1130 PM CDT...

At 1106 PM CDT, Doppler radar was tracking a strong thunderstorm near
Weldon, or 10 miles northwest of Monticello, moving east at 30 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Mansfield, De Land, Galesville, and Lodge.

This includes the following highways...
 Interstate 72 between mile markers 171 and 173.
 Interstate 74 between mile markers 161 and 167.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4010 8872 4019 8875 4028 8849 4009 8847
TIME...MOT...LOC 0406Z 256DEG 24KT 4014 8870

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

37
Special weather statement, Mar 31, 11:10 PM CDT, 34 minutes before
Special Weather Statement
National Weather Service Lincoln IL
1110 PM CDT Tue Mar 31 2026

ILZ042-043-010430-
Logan-De Witt-
1110 PM CDT Tue Mar 31 2026

...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL LOGAN AND
SOUTHWESTERN DE WITT COUNTIES THROUGH 1130 PM CDT...

At 1110 PM CDT, Doppler radar was tracking a strong thunderstorm over
Kenney, or 8 miles southwest of Clinton, moving east at 30 mph.

HAZARD...Half inch hail.

SOURCE...Radar indicated.

IMPACT...Minor hail damage to vegetation is possible.

Locations impacted include...
Clinton, Wapella, Kenney, Hallsville, Weldon Springs State Park, and
Midland City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4006 8916 4013 8917 4022 8895 4006 8890
TIME...MOT...LOC 0410Z 256DEG 24KT 4010 8911

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...<30 MPH

37
Special weather statement, Mar 31, 11:27 PM CDT, 17 minutes before
Special Weather Statement
National Weather Service Lincoln IL
1127 PM CDT Tue Mar 31 2026

ILZ043-010445-
De Witt-
1127 PM CDT Tue Mar 31 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN DE WITT COUNTY
THROUGH 1145 PM CDT...

At 1127 PM CDT, Doppler radar was tracking a strong thunderstorm near
Clinton, moving east at 30 mph.

HAZARD...Wind gusts up to 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Clinton, Wapella, and Hallsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4012 8910 4019 8914 4028 8891 4014 8886
TIME...MOT...LOC 0427Z 254DEG 25KT 4016 8905

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

37
Special weather statement, Mar 31, 11:39 PM CDT, 5 minutes before
Special Weather Statement
National Weather Service Lincoln IL
1139 PM CDT Tue Mar 31 2026

ILZ038-042-043-010500-
Logan-De Witt-McLean-
1139 PM CDT Tue Mar 31 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN LOGAN...
NORTHWESTERN DE WITT AND SOUTHWESTERN MCLEAN COUNTIES THROUGH
MIDNIGHT CDT...

At 1138 PM CDT, Doppler radar was tracking a strong thunderstorm over
Atlanta, or 12 miles northeast of Lincoln, moving northeast at 25
mph.

HAZARD...Wind gusts up to 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Heyworth, Atlanta, McLean, and Shirley.

This includes Interstate 55 between mile markers 139 and 153.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4023 8920 4028 8927 4045 8910 4029 8893
TIME...MOT...LOC 0438Z 237DEG 23KT 4027 8919

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

37

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 9:11 PM CDTSpecial Weather StatementILXSangamon19 min
Mar 31, 9:26 PM CDTSpecial Weather StatementILXMacon19 min
Mar 31, 9:28 PM CDTSpecial Weather StatementILXSangamon17 min
Mar 31, 9:40 PM CDTSpecial Weather StatementILXMacon20 min
Mar 31, 9:56 PM CDTSpecial Weather StatementILXMacon19 min
Mar 31, 10:36 PM CDTSpecial Weather StatementILXDeWitt24 min
Mar 31, 11:06 PM CDTSpecial Weather StatementILXPiatt24 min
Mar 31, 11:10 PM CDTSpecial Weather StatementILXDeWitt20 min
Mar 31, 11:27 PM CDTSpecial Weather StatementILXDeWitt18 min
Mar 31, 11:39 PM CDTSpecial Weather StatementILXDeWitt21 min
Mar 31, 11:59 PM CDTSpecial Weather StatementILXMcLean16 min
Apr 1, 3:17 AM CDTAreal Flood AdvisoryILXDeWitt, Logan, McLean4 hr
Apr 1, 7:49 AM CDTAreal Flood AdvisoryILXChampaign, DeWitt, Logan, McLean2 hr
Apr 1, 12:18 PM CDTWind AdvisoryILXCass, Champaign, Christian, Clark, Clay, Coles and 29 more31 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 2026Every severe thunderstorm warning 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.