Severe Thunderstorm Warning 270, NWS Lincoln, IL

021 
WWUS53 KILX 171537
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1037 AM CDT Wed Jun 17 2026

ILC039-115-139-147-171615-
/O.CON.KILX.SV.W.0270.000000T0000Z-260617T1615Z/
Moultrie-Piatt-De Witt-Macon-
1037 AM CDT Wed Jun 17 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM CDT
FOR NORTHERN MOULTRIE...PIATT...DE WITT AND MACON COUNTIES...

At 1037 AM CDT, severe thunderstorms were located along a line
extending from near Weldon to near Decatur, moving east at 40 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

These severe storms will be near...
  Decatur, Mount Zion, Forsyth, Long Creek, Argenta, Oreana, Weldon, 
  and Decatur Airport around 1040 AM CDT.
  De Land and Cisco around 1045 AM CDT.
  Cerro Gordo around 1050 AM CDT.
  Monticello around 1055 AM CDT.
  Bement and White Heath around 1100 AM CDT.
  Hammond around 1105 AM CDT.
  Ivesdale around 1110 AM CDT.
  Atwood around 1115 AM CDT.

Other locations impacted by these severe thunderstorms include Boody,
Clinton Power Station, Weldon Springs State Park, Lake City, Lane,
Elwin, Milmine, Hervey City, Cadwell, and La Place.

This also includes Clinton Lake State Recreation Area, Lincoln Trail
Homestead State Park & Memorial, Spitler Woods State Natural Area,
and Weldon Springs State Park.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 300 PM CDT for central and
east central Illinois.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3979 8847 3962 8848 3977 8914 3980 8914
      3981 8922 3992 8915 4028 8895 4028 8846
      3979 8846
TIME...MOT...LOC 1537Z 283DEG 33KT 4017 8881 3987 8899 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Deubelbeiss

844 
WWUS53 KILX 171551
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1051 AM CDT Wed Jun 17 2026

ILC039-115-139-147-171615-
/O.CON.KILX.SV.W.0270.000000T0000Z-260617T1615Z/
Moultrie-Piatt-De Witt-Macon-
1051 AM CDT Wed Jun 17 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM CDT
FOR NORTHERN MOULTRIE...PIATT...EASTERN DE WITT AND EASTERN MACON
COUNTIES...

At 1051 AM CDT, severe thunderstorms were located along a line
extending from De Land to near Decatur Airport, moving east at 40
mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

These severe storms will be near...
  Monticello, Cerro Gordo, and De Land around 1055 AM CDT.
  Bement and White Heath around 1100 AM CDT.
  Hammond around 1105 AM CDT.
  Ivesdale around 1110 AM CDT.
  Atwood around 1115 AM CDT.

Other locations impacted by these severe thunderstorms include
Milmine, Hervey City, Cadwell, La Place, Lake City, Elwin,
Galesville, Lodge, and Oakley.

This also includes Spitler Woods State Natural Area.
 
This includes the following highways...
 Interstate 72 between mile markers 143 and 173.
 Interstate 74 between mile markers 156 and 168.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 300 PM CDT for central and
east central Illinois.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3979 8847 3962 8848 3975 8903 4028 8872
      4028 8846 3979 8846
TIME...MOT...LOC 1551Z 277DEG 34KT 4014 8865 3984 8883 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Deubelbeiss

506 
WWUS53 KILX 171615
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1115 AM CDT Wed Jun 17 2026

ILC039-115-139-147-171625-
/O.EXP.KILX.SV.W.0270.000000T0000Z-260617T1615Z/
Moultrie-Piatt-De Witt-Macon-
1115 AM CDT Wed Jun 17 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN MOULTRIE...PIATT...
EASTERN DE WITT AND EASTERN MACON COUNTIES HAS EXPIRED...

The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been allowed to expire.  However, gusty
winds are still possible with these thunderstorms.

A Tornado Watch remains in effect until 300 PM CDT for central and
east central Illinois.

&&

LAT...LON 3979 8847 3962 8848 3975 8903 4028 8872
      4028 8846 3979 8846
TIME...MOT...LOC 1615Z 285DEG 40KT 4008 8836 3978 8854 

$$

Deubelbeiss

Area Forecast Discussion
National Weather Service Lincoln IL
609 AM CDT Wed Jun 17 2026

.KEY MESSAGES...

- A dangerous severe weather outbreak is projected for for
  central IL today, capable of strong/intense tornadoes
  (EF2-EF3+ damage), damaging wind gusts of 75+ mph, and 2+ inch
  hail.

- Heavy rainfall rates will create a risk of localized flash
  flooding today. There is a Flood Watch out for the areas along
  and north of a Fulton County to McLean County line from 7am to
  10pm.

- Strong, non-convective gradient winds are anticipated this
  afternoon, with widespread southwest gusts near 50 mph,
  particularly for areas near and south of I-72. A Wind Advisory
  will be in effect from 12pm to 7pm.

&&

.DISCUSSION...
Issued at 307 AM CDT Wed Jun 17 2026

Bottom Line Up Front: Stay weather aware all day long today and know
where your safest shelter is when/if a warning is issued for your
location today. An outbreak of severe weather is expected later
today.

SPC has maintained a moderate risk (level 4 of 5) with an enhanced
risk (level 3 of 5) over (basically) the rest of the forecast area.
A warm front will push north, lifting better moisture (dewpoints in
the 70s and PWATS ~2 inches) into central and southeastern IL. A
morning round of convection will travel along and north of the warm
front associated with the strong LLJ this morning. If a supercell
can latch onto the warm front, tornadoes can be possible. Otherwise,
large hail and damaging winds are the concern for the morning round.
This round will enter the northern part of the forecast area by 13z
(8am) and will travel east across the state. There is some
uncertainty of how far south that area of storms will make it but
some guidance is now suggesting as far south as I-70. There is some
overlap in timing with the afternoon "big show". The early round
will be exiting the east/southeast counties by ~20z (4pm), which is
about the time the line of storms will be developing in western IL.

Some uncertainty on how far north the warm front will get still
exists. Guidance is still showing it lifting somewhere between I-74
and I-80. If the warm front doesn't get as far north as I-80, then
the moderate risk threat could possibly be pushed further south for
the cold frontal passage and associated thunderstorms in the
afternoon from 20z-05z (3pm-12am). The environment will be very
volatile and capable of strong/intense tornadoes (EF2-EF3+ damage),
damaging wind gusts of 75+ mph, and 2+ inch hail. CAPE values 2000-
3000 J/kg, insane amount of effective bulk shear values (60-70
knots), and SRH 0-1 km of ~250-450 m2/s2. Mid level lapse rates are
more than sufficient for large to very large hail (7.6-8.1 C/km).
Supercells are the expected mode through most of the event this
afternoon into evening, but may begin to evolve into a fast moving
linear system as it nears exiting the southeastern counties. The
supercells have the perfect environment to be long-lived. These
storms are going to be moving very fast, with storm motions nearly
due east at 50-60 knots.

WPC has kept an excessive rainfall high-end slight risk for central
and southeastern IL today, but our northern most counties have been
clipped by the moderate risk area. PWATs of 1.8-2.1 inches are
forecast. The storms today would likely have torrential rain within
them, but will be moving fairly fast, which would hopefully help
curb the flooding threat for most places. With many rivers/streams
already at or near flood and saturated soils, flooding could become
a concern through the event. There is a Flood Watch out for the
areas along and north of a Fulton County to McLean County line from
12z to 03z (7am-10pm) today. Remember, turn around, don't drown!

Outside of the severe weather today, there are very strong winds
associated with this system. There is a Wind Advisory in place from
Schuyler County to Vermilion County from 18z to 00z (1pm-7pm)
today. Southerly winds will gust to 35-45 mph during that time.

After today, it looks like we get two days of a break. Friday and
Saturday appear to be pleasant with highs in the upper 70s to mid
80s and plenty of sunshine. Additional rain chances return to the
forecast for Sunday into Monday.

&&

.AVIATION /12Z TAFS THROUGH 12Z THURSDAY/...
Issued at 609 AM CDT Wed Jun 17 2026

VFR conditions will prevail at all sites for the start. However,
two rounds of showers/storms will move across each site next
16hrs. First round will be in morning and will have TEMPO at
at all sites and MVFR ceilings within the TEMPO group. Vis will
be around 3sm. After a brief break in the afternoon, the second
around moves through all sites in the afternoon to early
evening. Will have TEMPO group for all sites and MVFR ceilings
and vis for when storms move through. After line of storms moves
through, ceilings should return to VFR.

Winds will become southeasterly this morning with gusts of
20-25kts. Afternoon winds become southwesterly with gusts
pushing 35-40kts at all sites. Once storms and front moves
through, winds become westerly with gusts around 20-25kts.

&&

.ILX WATCHES/WARNINGS/ADVISORIES...
Flood Watch through this evening for ILZ027>031-036>038.
Wind Advisory from 1 PM this afternoon to 7 PM CDT this
evening for ILZ040>057-061>063-066>068-071>073.

&&

KEY MESSAGES...Copple
DISCUSSION...Copple
AVIATION...Auten/Copple

Hazardous Weather Outlook
National Weather Service Lincoln IL
511 AM CDT Wed Jun 17 2026

ILZ027>031-036>038-040>057-061>063-066>068-071>073-181100-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler-
Mason-Logan-De Witt-Piatt-Champaign-Vermilion-Cass-Menard-Scott-
Morgan-Sangamon-Christian-Macon-Moultrie-Douglas-Coles-Edgar-Shelby-
Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
511 AM CDT Wed Jun 17 2026

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

.DAY ONE...Today and tonight.

Two rounds of severe thunderstorms will move through the area
today into tonight. There is a moderate risk (level 4 of 5) that
these storms will be severe. The risks are for strong and damaging
tornadoes, damaging winds of 60-75 mph with some pockets of winds
over 75 mph, and large hail over 2 inches. Flash flooding is also
possible due to storms producing up to 2 inches of rainfall in a
short amount of time.

Southwest winds will also be quite gusty outside of the
thunderstorms, with gusts of 35 to 50 mph across the whole area.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

River flooding is ongoing for portions of central IL. Please refer
to the latest flood statements for details.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed this morning north of I-70
and then again this afternoon into this evening across the whole area.

Expected storm motion is toward the east to southeast around 50-60
mph.

Auten

Preliminary Local Storm Report
National Weather Service Lincoln IL
941 AM CDT Wed Jun 17 2026

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

0911 AM     Tstm Wnd Dmg     Princeville             40.93N 89.76W
06/17/2026                   Peoria             IL   Broadcast Media

            Report of a tree down.

0837 AM     Tstm Wnd Dmg     Galesburg               40.95N 90.37W
06/17/2026                   Knox               IL   Broadcast Media

            Tree on powerline at east Knox Rd. and Day
            St. Power outage reported.

&&

Preliminary Local Storm Report
National Weather Service Lincoln IL
946 AM CDT Wed Jun 17 2026

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

0855 AM     Tstm Wnd Dmg     Williamsfield           40.93N 90.02W
06/17/2026                   Knox               IL   Emergency Mngr

            Damage to funeral home and power outage
            reported.

&&

Preliminary Local Storm Report
National Weather Service Lincoln IL
959 AM CDT Wed Jun 17 2026

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

0911 AM     Tstm Wnd Gst     Princeville             40.93N 89.76W
06/17/2026  E60 MPH          Peoria             IL   Trained Spotter

            Relayed through Emergency Management.

0915 AM     Tstm Wnd Gst     Dunlap                  40.86N 89.68W
06/17/2026  E60 MPH          Peoria             IL   Trained Spotter

            Relayed through Emergency Management.

0919 AM     Tstm Wnd Gst     Bellevue                40.69N 89.68W
06/17/2026  E60 MPH          Peoria             IL   Trained Spotter

            Relayed through Emergency Management.

&&

Preliminary Local Storm Report
National Weather Service Lincoln IL
1002 AM CDT Wed Jun 17 2026

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

0950 AM     Tstm Wnd Gst     Roanoke                 40.80N 89.20W
06/17/2026  M60 MPH          Woodford           IL   Emergency Mngr

            Measured at the Emergency Operations Center.

&&

Preliminary Local Storm Report
National Weather Service Lincoln IL
1008 AM CDT Wed Jun 17 2026

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

0923 AM     Tstm Wnd Dmg     3 S Rome                40.84N 89.50W
06/17/2026                   Woodford           IL   Trained Spotter

            Tree down on IL-29...south of Cedar Hills
            Dr.

&&