Flash Flood Warning 24, NWS Lincoln, IL

000 
WGUS73 KILX 112307
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
607 PM CDT Thu Jun 11 2026

ILC057-143-120345-
/O.CON.KILX.FF.W.0024.000000T0000Z-260612T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fulton IL-Peoria IL-
607 PM CDT Thu Jun 11 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT THIS 
EVENING FOR SOUTHWESTERN PEORIA AND FULTON COUNTIES...

At 606 PM CDT, emergency management reported flash flooding in 
numerous locations. Between 0.5 and 2 inches of rain have fallen. 
Additional rainfall amounts up to 1 inch are possible in the warned 
area. Flash flooding is already occurring.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Emergency management reported.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Canton, Lewistown, Farmington, Cuba, Hanna City, Glasford, 
  Trivoli, Vermont, St. David, Fairview, Ipava, Table Grove, 
  Dunfermline, Bernadotte, Smithfield, Bryant, Norris, Banner, 
  Marietta and Ellisville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 4057 8977 4022 9045 4059 9045 4071 9015
      4071 8980

FLASH FLOOD...OBSERVED

$$

37

268 
WGUS73 KILX 120030
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
730 PM CDT Thu Jun 11 2026

ILC057-143-120345-
/O.CON.KILX.FF.W.0024.000000T0000Z-260612T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fulton IL-Peoria IL-
730 PM CDT Thu Jun 11 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT THIS 
EVENING FOR SOUTHWESTERN PEORIA AND CENTRAL FULTON COUNTIES...

At 730 PM CDT, emergency management reported flash flooding in 
numerous locations. Between 1 and 2 inches of rain have fallen. 
Flash flooding is already occurring.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Emergency management reported.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Canton, Lewistown, Cuba, Hanna City, Glasford, Vermont, St. David, 
  Ipava, Table Grove, Dunfermline, Bernadotte, Smithfield, Bryant, 
  Norris, Banner, Marietta, Fiatt and Smithville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 4062 9008 4071 8980 4057 8977 4052 8987
      4022 9045 4054 9044

FLASH FLOOD...OBSERVED

$$

37

180 
WGUS73 KILX 120337
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
1037 PM CDT Thu Jun 11 2026

ILC057-143-120347-
/O.EXP.KILX.FF.W.0024.000000T0000Z-260612T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fulton IL-Peoria IL-
1037 PM CDT Thu Jun 11 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 1045 PM CDT THIS EVENING FOR 
SOUTHWESTERN PEORIA AND CENTRAL FULTON COUNTIES...

The rain has ended and flood waters are receding. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

&&

LAT...LON 4062 9008 4071 8980 4057 8977 4052 8987
      4022 9045 4054 9044

$$

37

Area Forecast Discussion
National Weather Service Lincoln IL
232 PM CDT Thu Jun 11 2026

.KEY MESSAGES...

- A line of severe thunderstorms is forecast to produce damaging
  winds and several embedded tornadoes across central Illinois
  this evening (risk level 4 of 5). The window for the most
  intense storms will be 4-10pm.

- While the risk is lower (level 2 of 4), there could be some
  localized flooding with these storms as well, especially north
  of I-72 and west of I-57 where many locations received
  several inches of rainfall yesterday.

- More showers and thunderstorms are likely (60-80% chance)
  Saturday night, with a level 1 of 5 (marginal) risk for
  severe weather and excessive rainfall.

&&

.DISCUSSION...
Issued at 230 PM CDT Thu Jun 11 2026

***** SEVERE WEATHER OUTBREAK THIS EVENING *****

At 230pm, temperatures and dewpoints across central and southeast
Illinois were in the mid-upper 80s and mid 70s, respectively amidst
southerly flow, evapotranspiration "ET" (mostly evaporation this
early in the growing season), and sunshine. RAP mesoanalysis
suggests this is contributing to MLCAPE values of 1000-3500 J/kg - a
sharp gradient across the area with higher values to the south.
Surface heating should continue to boost both temperatures and
instability and reduce convective inhibition (CIN) throughout the
afternoon ahead of an approaching cold front, which will sweep the
area west-east during the mid to late evening hours. RAP/HRRR/NAM
suggest MLCAPE will peak around 4000-5000 J/kg with 35-45 kt deep
layer shear ahead of that front, which should provide sufficient
forcing to maintain the ongoing storms across west-central IL and
result in development further to the south. This highly volatile
convective environment should favor organized convection capable
initially of all severe hazards (tornadoes, large hail, and damaging
winds), with an increasing wind and quasilinear convective system
(QLCS) tornado threat as storms grow quickly upscale into bowing
lines. PWATs approaching 2 inches will favor precip loading,
especially in the taller cores which will feature melting hail,
while steep mid level lapse rates and wide CAPE profiles will
enhance potential for RIJ formation in bowing segments; this will
increase the risk for high-end (75+ mph) and long-duration (20+
minutes) straight-line winds which would result in swaths of
enhanced damage (trees down, shingle damage, power outages). SPC has
issued a level 4 of 5, "moderate," risk for severe weather, driven
by wind and tornadoes, which could be strong north of a Macomb to
Bloomington line. Winds ahead of these storms may gust up to 40 mph
from the south, as descending hydrometeors from anvils aid in
momentum transport from a 40-50 kt LLJ (strongest over northern IL).

***** LOW RISK FOR FLASH FLOODING *****

With some locations north of I-72 and west of I-57 having received
over 3 inches of rainfall yesterday (and multiple rounds of heavy
rainfall in days prior), there is concern that flash flooding could
occur with storms this afternoon and evening. This is especially
true with the ongoing training storms north of a roughly Macomb to
El Paso line. 3 hour FFG in some of these areas is under a half an
inch, and with various CAMs advertising 1 hour rain rates >1 inch it
makes sense there could be some issues, especially in urban and poor
drainage areas. A Flood Watch was issued for Cass to Dewitt, and
counties further north, in effect until 9pm.

***** LESS WARM AND MUGGY STARTING TONIGHT *****

Behind the cold front, conditions will turn much less humid and,
with some clearing, temperatures are forecast to fall into the mid
to upper 50s overnight west of roughly I-57. High temperatures
tomorrow should only climb into the low 80s, making it feel much
more pleasant heading into the weekend. Warm air advection (WAA)
will bring a slightly more humid airmass into the region tomorrow
night into Saturday ahead of another shortwave trough, but
convection to our southwest should limit the northward extent of
deep layer moisture - resulting in a low (albeit nonzero) risk for
severe weather and heavy rainfall Saturday/night in our neck of the
woods. Both SPC and WPC have us in marginal risks for each hazard.

Behind that second front, much cooler conditions return, with NBM
only giving a 15-30% chance high temperatures reach 75 degrees on
Sunday. Temperatures are slated to moderate gradually towards the
middle of next week, as southwest flow returns ahead of the next
upper level low pressure system.

&&

.AVIATION /18Z TAFS THROUGH 18Z FRIDAY/...
Issued at 1211 PM CDT Thu Jun 11 2026

Scattered strong convection already developing across western
Illinois will continue to press eastward early this afternoon,
likely impacting KPIA very early this afternoon. Meanwhile,
gusty southwesterly winds are expected to continue ahead of an
advancing cold front that will cross into the western CWA by
00Z. More significant convection will hold off on developing for
another 1-2 hours, forming along a cold front. This convection
may congeal into a broken line by mid- late afternoon and push
southeast through the TAF sites by 02Z. Aviation interests
should be aware of the increased risks for both high winds but
also large hail as this activity passes southeast.

Will maintain a period of VCSH for an hour or two behind the
passage of the front, but anticipating quick improvement into
the late evening hours.

&&

.ILX WATCHES/WARNINGS/ADVISORIES...
Flood Watch until 9 PM CDT this evening for ILZ027>031-036>038-
040>043-047-048.

&&

KEY MESSAGES...Bumgardner
DISCUSSION...Bumgardner
AVIATION...Geelhart

Hazardous Weather Outlook
National Weather Service Lincoln IL
405 PM CDT Thu Jun 11 2026

ILZ027>031-036>038-040>057-061-122115-
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-
405 PM CDT Thu Jun 11 2026

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

.DAY ONE...Tonight.

Severe thunderstorms are expected through this evening. Damaging
winds over 70 mph, large hail, and tornadoes are all possible with
the strongest storms. Heavy rain may also lead to flash flooding,
especially where heavy rain fell the last several days.

River flooding is ongoing or expected to develop along the Spoon, La
Moine, Illinois and Mackinaw Rivers.

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

Additional thunderstorms are expected Saturday night. A few of these
will be capable of producing strong wind gusts.

River flooding is ongoing or expected to develop along the Spoon, La
Moine, Mackinaw, and Illinois Rivers.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed through late this evening.

Expected storm motion is toward east between 35-45 mph.

ILZ062-063-066>068-071>073-122115-
Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
405 PM CDT Thu Jun 11 2026

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

.DAY ONE...Tonight.

A line of severe thunderstorms is expected to move across the area
this evening. These storms will be capable of damaging wind gusts
and a couple tornadoes. In addition, locally heavy rain may
aggravate any lingering flooding from recent storms.

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

Additional thunderstorms are expected Saturday night. A few of these
will be capable of producing strong wind gusts.

Minor flooding will continue along the Wabash River into next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed through late this evening.

Expected storm motion is toward the east-southeast around 35-45 mph.

NMA

Preliminary Local Storm Report
National Weather Service Lincoln IL
230 PM CDT Thu Jun 11 2026

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

0730 AM     Flood            1 NNE Lexington         40.65N 88.77W
06/11/2026                   McLean             IL   Public

            Photo shows overland flooding of a stream
            near Orange Street on the north side of
            Lexington. Water extends up to some homes
            and other outbuildings. Report time is based
            on the photo time, but flooding likely began
            during the overnight hours.

&&

Erwin

Preliminary Local Storm Report
National Weather Service Lincoln IL
251 PM CDT Thu Jun 11 2026

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

0730 AM     Rain             2 NE Cisco              40.03N 88.70W
06/11/2026  M1.28 Inch       Piatt              IL   Mesonet

            SWOP report, 24 hour total.

&&

Erwin

Preliminary Local Storm Report
National Weather Service Lincoln IL
504 PM CDT Thu Jun 11 2026

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

0459 PM     Tornado          5 WNW Low Point         40.91N 89.40W
06/11/2026                   Woodford           IL   Trained Spotter

            Social media photos showing large tornado in
            progress.

&&

Erwin

Preliminary Local Storm Report
National Weather Service Lincoln IL
518 PM CDT Thu Jun 11 2026

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

0513 PM     Funnel Cloud     2 SW Benson             40.83N 89.15W
06/11/2026                   Woodford           IL   Trained Spotter

            Trained spotter in Roanoake reported a
            funnel cloud looking northeast.

&&

Erwin

Preliminary Local Storm Report
National Weather Service Lincoln IL
520 PM CDT Thu Jun 11 2026

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

0518 PM     Funnel Cloud     1 W Ipava               40.35N 90.35W
06/11/2026                   Fulton             IL   Trained Spotter

            Rotating wall cloud producing a funnel.

&&

Erwin

Preliminary Local Storm Report
National Weather Service Lincoln IL
528 PM CDT Thu Jun 11 2026

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

0522 PM     Tornado          Ipava                   40.35N 90.32W
06/11/2026                   Fulton             IL   Emergency Mngr

&&

Erwin