Flash Flood Warning 40, NWS Lincoln, IL

533 
WGUS73 KILX 260157
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
857 PM CDT Thu Jun 25 2026

ILC025-049-079-260300-
/O.CON.KILX.FF.W.0040.000000T0000Z-260626T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clay IL-Effingham IL-Jasper IL-
857 PM CDT Thu Jun 25 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS 
EVENING FOR NORTHERN CLAY, SOUTHERN EFFINGHAM AND SOUTHWESTERN 
JASPER COUNTIES...

At 856 PM CDT, Doppler radar indicated that earlier thunderstorms 
producing heavy rain across the warned area produced between 1 and 4 
inches of rain. Flooding impacts will continue, but no additional 
rainfall is expected in the next hour. Flash flooding is ongoing or 
expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

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...
  Edgewood, Mason, Bible Grove, Iola, Hord, Ingraham and Wendelin.

This includes  Interstate 57 between  mile markers 143 and 147.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3891 8869 3891 8881 3900 8881 3890 8826
      3876 8826 3885 8869

FLASH FLOOD...RADAR INDICATED

$$

Deubelbeiss

082 
WGUS73 KILX 260256
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
956 PM CDT Thu Jun 25 2026

ILC025-049-079-260306-
/O.EXP.KILX.FF.W.0040.000000T0000Z-260626T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clay IL-Effingham IL-Jasper IL-
956 PM CDT Thu Jun 25 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 10 PM CDT THIS EVENING FOR 
NORTHERN CLAY, SOUTHERN EFFINGHAM AND SOUTHWESTERN JASPER COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

A Flood Watch remains in effect until 100 PM CDT Saturday for 
portions of central, east central, southeast, and west central 
Illinois.

&&

LAT...LON 3891 8869 3891 8881 3900 8881 3890 8826
      3876 8826 3885 8869

$$

Deubelbeiss

Area Forecast Discussion
National Weather Service Lincoln IL
249 PM CDT Thu Jun 25 2026

.KEY MESSAGES...

- Isolated Severe Storms through Saturday: Scattered
  thunderstorms this afternoon and evening will bring a threat
  of isolated damaging winds and large hail to areas along and
  south of a Shelbyville to Terre Haute line. There is a
  marginal to slight risk of severe storms Friday afternoon into
  Friday evening across the same area (slight risk south of
  I-70), with isolated damaging winds, large hail and isolated
  tornadoes possible especially south of I-70. There is a
  marginal risk of isolated severe storm threat will continue
  Saturday afternoon into Saturday evening but will shift to
  areas along and south of I-74.

- Heavy Rainfall and Flooding: Multiple rounds of storms will
  bring a heavy rainfall and flood threat from late this
  afternoon through Saturday morning. There is a 60-80% chance
  that rainfall totals will exceed 1.5 inches for locations
  along and south of a Jacksonville to Paris line where a Flood
  Watch is posted.

- Dangerous Heat Next Week: A prolonged period of oppressive
  heat and humidity builds into the region Sunday afternoon through
  Thursday. High confidence exists that daily heat index values
  will consistently be around or above 105 degrees across the
  area during the afternoon hours Monday through Thursday.

&&

.DISCUSSION...
Issued at 245 PM CDT Thu Jun 25 2026

We continued the Flood Watch from Scott, Morgan, Sangamon,
Macon, Moultrie, Douglas and Edgar counties south from 4 pm
today until 1 pm Saturday. Between 1.5 and 3 inches of rain is
likely with locally higher amounts. The LPMM guidance is showing
pockets of 2-3 inches of rain in less than 6 hours over central
and southern portions of CWA through Friday evening. WPC has
marginal to slight chance of excessive rainfall through Fri
night over central and southeast IL, with the slight chance over
southern CWA/southeast IL. Will need to monitor closely if
flood watch is needed to expand another tier of counties
northward. We are already seeing slow moving thunderstorms
producing 1-2 inches of rain per hour south of an Effingham to
Robinson line. An isolated thunderstorm was west of Paris in
southern Edgar county. Tropical like PW values are 1.5-1.75
inches over southeast IL.

In addition to the heavy rains, we have marginal risks of severe
storms this afternoon into mid evening along and south of a
Shelbyville to Terre Haute line for 5 to less than 10% risk of
damaging winds and hail. SPC Day2 outlook has marginal to slight
risk of severe storms Fri afternoon/evening in same area, with
the slight risk south of I-70 where there is a 5% to less than
10% risk of tornadoes. The strong to potentially severe cells we
had in southeast IL this afternoon are located in unstable
airmass with MLCAPES 1500-2200 j/kg from Shelby and Edgar
counties south. Meanwhile have 40-50 kt bulk shear values in
east central IL and this values are forecast to weaken to 30-40
kts into mid evening.

Low pressure over southeast CO to track eastward into east
central/se IL Friday evening and will see increasing moisture
ahead of system into central IL. Have chances of showers and
thunderstorms increasing from se to ne during overnight into
Friday and diminishing during Friday night. PW values likely
reach 1.75-2.1 inches on Friday supporting heavy rain threat.
Unstable air mass in southeast IL also supports severe wx risk
Fri afternoon/evening. Convection chances to become more
scattered Saturday and Saturday night as system pulls away.
Could still be some isolated convection Sunday especially Sunday
afternoon over ne CWA.

Main weather story next week will be the high heat and humidity
building Sunday/Monday and continue through much of next week.
Highs climb from lower 80s Saturday to upper 80s/lower 90s
Sunday with afternoon heat indices upper 90s to lower 100s
Sunday afternoon. Even hotter Monday through Thu with highs in
the low to mid 90s and afternoon heat indices around or above
105F. We will likely need heat headlines next week especially
Monday through Thursday.

&&

.AVIATION /18Z TAFS THROUGH 18Z FRIDAY/...
Issued at 1151 AM CDT Thu Jun 25 2026

Clouds will gradually increase this evening in the vicinity of a
surface front displaced just south of the regional terminals.
Overnight into Friday morning, these clouds will thicken and
lower as the surface front slowly lifts northward. MVFR
ceilings are forecast to spread over the regional terminals
between 08z-12z, with widespread showers forecast to move in
during or just after that time and persisting for the remainder
of this TAF cycle. Visibility may also occasionally fall into
the MVFR range within heavier bands of showers.

Surface winds will gradually veer, becoming east between 5-10
kts by Friday morning as the surface front moves over the
region.

&&

.ILX WATCHES/WARNINGS/ADVISORIES...
Flood Watch through Saturday afternoon for ILZ049>057-061>063-
066>068-071>073.

&&

KEY MESSAGES...07
DISCUSSION...07
AVIATION...MJA

Hazardous Weather Outlook
National Weather Service Lincoln IL
258 PM CDT Thu Jun 25 2026

ILZ027>031-036>038-040>048-261100-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler-
Mason-Logan-De Witt-Piatt-Champaign-Vermilion-Cass-Menard-
258 PM CDT Thu Jun 25 2026

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

.DAY ONE...Tonight.

Isolated thunderstorms will be possible tonight especially after
midnight. The risk of severe storm is low tonight. Minor to Moderate
flooding will continue on the Illinois River.

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

Occasional scattered thunderstorms are possible Thursday through
Friday evening. There is still a chance of thunderstorms from
overnight Friday night through Saturday night. There a Marginal Risk
for severe thunderstorms Saturday afternoon and evening south of
I-74.

Hot and humid conditions will arrive Sunday and persist into next
week. Minor to moderate heat risk is likely, and these conditions
may lead to heat-related illness in sensitive individuals or those
without access to effective cooling.

Minor to moderate flooding will continue on the Illinois River the
next several days.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated tonight.

ILZ049>057-061>063-066>068-071>073-261100-
Scott-Morgan-Sangamon-Christian-Macon-Moultrie-Douglas-Coles-Edgar-
Shelby-Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-
Lawrence-
258 PM CDT Thu Jun 25 2026

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

.DAY ONE...Tonight.

Heavy rain and a few strong to severe thunderstorms are possible
through tonight, and may result in localized flooding, as well as
locally damaging winds and hail.

Flooding continues along several rivers throughout the area owing to
recent heavy rainfall.

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

A Flood Watch is posted from 4 pm today through 1 pm Saturday. Periods
of heavy rain and a few severe thunderstorms are expected Friday
into Friday night, and may result in localized flooding. There is
still a chance of thunderstorms Saturday and Saturday night. A few
severe thunderstorms are possible again Friday and Saturday, mainly
in the afternoon and evening. Locally damaging winds and hail are the
main threat, but a tornado or two is possible Friday.

Hot and humid conditions will arrive Sunday and persist into next
week. Minor to moderate heat risk is likely, and these conditions
may lead to heat-related illness in sensitive individuals or those
without access to effective cooling.

Minor to moderate flooding will continue on several rivers
throughout the area over the next several days.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed through mid evening.

Expected storm motion is toward the east around 20 mph.

07

Special Weather Statement
National Weather Service Lincoln IL
114 PM CDT Thu Jun 25 2026

ILZ072-073-251845-
Richland-Lawrence-
114 PM CDT Thu Jun 25 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN LAWRENCE AND
SOUTHEASTERN RICHLAND COUNTIES THROUGH 145 PM CDT...

At 114 PM CDT, Doppler radar was tracking a strong thunderstorm near
Parkersburg, or 7 miles south of Olney, moving east at 15 mph.

HAZARD...Wind gusts up to 50 mph and nickel 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...
Olney, Parkersburg, Olney Noble Airport, and Calhoun.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3858 8815 3860 8816 3860 8822 3872 8818
      3869 8781 3857 8785 3857 8814
TIME...MOT...LOC 1814Z 285DEG 15KT 3862 8813

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

MJA

Special Weather Statement
National Weather Service Lincoln IL
118 PM CDT Thu Jun 25 2026

ILZ066-067-071-251845-
Clay-Effingham-Jasper-
118 PM CDT Thu Jun 25 2026

...A STRONG THUNDERSTORM WILL IMPACT WEST CENTRAL JASPER...
NORTHWESTERN CLAY AND SOUTHEASTERN EFFINGHAM COUNTIES THROUGH 145 PM
CDT...

At 118 PM CDT, Doppler radar was tracking a strong thunderstorm near
Bible Grove, or 14 miles south of Effingham, moving east at 20 mph.

HAZARD...Wind gusts up to 50 mph and nickel 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...
Bible Grove and Hord.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3885 8862 3902 8855 3898 8831 3875 8840
TIME...MOT...LOC 1818Z 289DEG 19KT 3891 8850

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

MJA