Alert archive / Illinois / River Flood Warnings in 2026
River Flood Warning 39, NWS Lincoln, IL
NWS Lincoln, IL issued this river flood warning at Aug 15, 2026, 10:19 AM CDT for Piatt County, Illinois. It took effect at Aug 16, 2026, 12:15 AM CDT. It was in force for 7 days.
The area
The outline as issued.
The facts
- Issued
- Aug 15, 2026, 10:19 AM CDT (15:19 UTC)
- In effect from
- Aug 16, 2026, 12:15 AM CDT
- Expired
- Aug 22, 2026, 7:00 PM CDT
- In force
- 7 days
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Flood severity
- Moderate
County Piatt County, IL
The radar
The Lincoln radar (KILX), 65 km from the middle of the area, began a volume at 15:19 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 river
Written for the forecast point Sangamon River at Monticello (MNTI2). The gauge peaked at 17.37 ft at Aug 18, 2026, 3:00 AM CDT.
- Action stage
- 11 ft
- Minor stage
- 13 ft
- Moderate stage
- 17 ft
- Major stage
- 20 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 05572000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
The text
As transmitted.
629
WGUS43 KILX 151519
FLWILX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Lincoln IL
1019 AM CDT Sat Aug 15 2026
...The National Weather Service in Lincoln IL has issued a Flood
Warning for the following rivers in Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay
tuned for further updates on this flooding situation.
Additional information is available at www.weather.gov.
&&
ILC147-160730-
/O.NEW.KILX.FL.W.0039.260816T0515Z-260821T0300Z/
/MNTI2.2.ER.260816T0515Z.260817T1800Z.260820T2100Z.NR/
1019 AM CDT Sat Aug 15 2026
...FLOOD WARNING IN EFFECT FROM LATE TONIGHT TO LATE THURSDAY
EVENING...
* WHAT...Moderate flooding is forecast. This approaches the flood of
record.
* WHERE...Sangamon River at Monticello.
* WHEN...From late tonight to late Thursday evening.
* ADDITIONAL DETAILS...
- At 10:00 AM CDT Saturday the stage was 11.6 feet.
- Forecast...The river is expected to rise above flood stage
just after midnight tonight to a crest of 17.7 feet early
Monday afternoon. It will then fall below flood stage
Thursday afternoon.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
Fld Observed Forecasts (1 pm CDT)
Location Stg Stg Day/Time Sun Mon Tue
Sangamon River
Monticello 13.0 11.6 Sat 10 am CD 15.1 17.7 16.5
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
MJA18 follow-up statements
824
WGUS83 KILX 160139
FLSILX
Flood Statement
National Weather Service Lincoln IL
839 PM CDT Sat Aug 15 2026
...The Flood Warning continues for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay
tuned for further updates on this flooding situation.
Additional information is available at www.weather.gov.
&&
ILC147-161745-
/O.EXT.KILX.FL.W.0039.260816T0632Z-260820T1500Z/
/MNTI2.2.ER.260816T0632Z.260817T1800Z.260820T0900Z.NR/
839 PM CDT Sat Aug 15 2026
...FLOOD WARNING NOW IN EFFECT FROM LATE TONIGHT TO LATE THURSDAY
MORNING...
* WHAT...Moderate flooding is forecast. This approaches the flood of
record.
* WHERE...Sangamon River at Monticello.
* WHEN...From late tonight to late Thursday morning.
* ADDITIONAL DETAILS...
- At 8:00 PM CDT Saturday the stage was 12.1 feet.
- Forecast...The river is expected to rise above flood stage
just after midnight tonight to a crest of 17.3 feet early
Monday afternoon. It will then fall below flood stage early
Thursday morning.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
Fld Observed Forecasts (7 pm CDT)
Location Stg Stg Day/Time Sun Mon Tue
Sangamon River
Monticello 13.0 12.1 Sat 8 pm CDT 15.9 17.3 15.5
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
07120
WGUS83 KILX 161503
FLSILX
Flood Statement
National Weather Service Lincoln IL
1003 AM CDT Sun Aug 16 2026
...The Flood Warning is extended for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay
tuned for further updates on this flooding situation.
Additional information is available at www.weather.gov.
&&
ILC147-170715-
/O.EXT.KILX.FL.W.0039.000000T0000Z-260821T1800Z/
/MNTI2.2.ER.260816T1055Z.260818T0600Z.260821T1200Z.NR/
1003 AM CDT Sun Aug 16 2026
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY FRIDAY AFTERNOON...
* WHAT...Minor flooding is occurring and moderate flooding is
forecast. This approaches the flood of record.
* WHERE...Sangamon River at Monticello.
* WHEN...Until early Friday afternoon.
* ADDITIONAL DETAILS...
- At 9:00 AM CDT Sunday the stage was 13.4 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:00 AM CDT Sunday was 13.4 feet.
- Forecast...The river is expected to rise to a crest of 17.3
feet early Tuesday morning. It will then fall below flood
stage Friday morning.
- Flood stage is 13.0 feet.
&&
Fld Observed Forecasts (1 pm CDT)
Location Stg Stg Day/Time Mon Tue Wed
Sangamon River
Monticello 13.0 13.4 Sun 9 am CDT 16.6 17.2 15.6
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
Geelhart404
WGUS83 KILX 170101
FLSILX
Flood Statement
National Weather Service Lincoln IL
801 PM CDT Sun Aug 16 2026
...The Flood Warning is extended for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay
tuned for further updates on this flooding situation.
Additional information is available at www.weather.gov.
&&
ILC147-171715-
/O.EXT.KILX.FL.W.0039.000000T0000Z-260822T1800Z/
/MNTI2.2.ER.260816T1055Z.260818T0600Z.260822T1200Z.NR/
801 PM CDT Sun Aug 16 2026
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY SATURDAY AFTERNOON...
* WHAT...Minor flooding is occurring and moderate flooding is
forecast. This approaches the flood of record.
* WHERE...Sangamon River at Monticello.
* WHEN...Until early Saturday afternoon.
* ADDITIONAL DETAILS...
- At 7:00 PM CDT Sunday the stage was 15.1 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 7:00 PM CDT Sunday was 15.1 feet.
- Forecast...The river is expected to rise to a crest of 17.5
feet early Tuesday morning. It will then fall below flood
stage Saturday morning.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
Fld Observed Forecasts (7 pm CDT)
Location Stg Stg Day/Time Mon Tue Wed
Sangamon River
Monticello 13.0 15.1 Sun 7 pm CDT 17.2 17.2 15.5
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
MJA320
WGUS83 KILX 171325
FLSILX
Flood Statement
National Weather Service Lincoln IL
825 AM CDT Mon Aug 17 2026
...The Flood Warning is extended for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay
tuned for further updates on this flooding situation.
Additional information is available at www.weather.gov.
&&
ILC147-180530-
/O.EXT.KILX.FL.W.0039.000000T0000Z-260823T0600Z/
/MNTI2.2.ER.260816T1055Z.260818T0600Z.260823T0000Z.NR/
825 AM CDT Mon Aug 17 2026
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY SUNDAY MORNING...
* WHAT...Minor flooding is occurring and moderate flooding is
forecast. This approaches the flood of record.
* WHERE...Sangamon River at Monticello.
* WHEN...Until early Sunday morning.
* ADDITIONAL DETAILS...
- At 8:00 AM CDT Monday the stage was 16.7 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 8:00 AM CDT Monday was 16.7 feet.
- Forecast...The river is expected to rise to a crest of 17.6
feet just after midnight tonight. It will then fall below
flood stage Saturday evening.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
Fld Observed Forecasts (7 am CDT)
Location Stg Stg Day/Time Tue Wed Thu
Sangamon River
Monticello 13.0 16.7 Mon 8 am CDT 17.6 16.6 14.8
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
DRH149
WGUS83 KILX 180041
FLSILX
Flood Statement
National Weather Service Lincoln IL
741 PM CDT Mon Aug 17 2026
...The Flood Warning continues for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay
tuned for further updates on this flooding situation.
Additional information is available at www.weather.gov.
&&
ILC147-181645-
/O.EXT.KILX.FL.W.0039.000000T0000Z-260822T1800Z/
/MNTI2.2.ER.260816T1055Z.260818T1200Z.260822T1200Z.NR/
741 PM CDT Mon Aug 17 2026
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY SATURDAY AFTERNOON...
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast. This approaches the flood of record.
* WHERE...Sangamon River at Monticello.
* WHEN...Until early Saturday afternoon.
* ADDITIONAL DETAILS...
- At 7:00 PM CDT Monday the stage was 17.2 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 7:00 PM CDT Monday was 17.2 feet.
- Forecast...The river is expected to rise to a crest of 17.4
feet tomorrow morning. It will then fall below flood stage
Saturday morning.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
Fld Observed Forecasts (7 pm CDT)
Location Stg Stg Day/Time Tue Wed Thu
Sangamon River
Monticello 13.0 17.2 Mon 7 pm CDT 17.2 15.5 13.9
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
MJA532
WGUS83 KILX 181351
FLSILX
Flood Statement
National Weather Service Lincoln IL
851 AM CDT Tue Aug 18 2026
...The Flood Warning continues for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay
tuned for further updates on this flooding situation.
Additional information is available at www.weather.gov.
&&
ILC147-190600-
/O.EXT.KILX.FL.W.0039.000000T0000Z-260821T1800Z/
/MNTI2.2.ER.260816T1055Z.260818T0800Z.260821T1200Z.NR/
851 AM CDT Tue Aug 18 2026
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY FRIDAY AFTERNOON...
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast. This approaches the flood of record.
* WHERE...Sangamon River at Monticello.
* WHEN...Until early Friday afternoon.
* ADDITIONAL DETAILS...
- At 8:00 AM CDT Tuesday the stage was 17.3 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 8:00 AM CDT Tuesday was 17.3 feet.
- Forecast...The river is expected to rise to a crest of 17.3
feet this afternoon. It will then fall below flood stage
Friday morning.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
Fld Observed Forecasts (7 am CDT)
Location Stg Stg Day/Time Wed Thu Fri
Sangamon River
Monticello 13.0 17.3 Tue 8 am CDT 16.4 14.3 13.0
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
DRH595
WGUS83 KILX 190123
FLSILX
Flood Statement
National Weather Service Lincoln IL
823 PM CDT Tue Aug 18 2026
...The Flood Warning continues for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay
tuned for further updates on this flooding situation.
Additional information is available at www.weather.gov.
&&
ILC147-191730-
/O.EXT.KILX.FL.W.0039.000000T0000Z-260821T1000Z/
/MNTI2.2.ER.260816T1055Z.260818T0800Z.260821T0400Z.NR/
823 PM CDT Tue Aug 18 2026
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY FRIDAY MORNING...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Sangamon River at Monticello.
* WHEN...Until early Friday morning.
* ADDITIONAL DETAILS...
- At 8:00 PM CDT Tuesday the stage was 16.9 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 8:00 PM CDT Tuesday was 17.3 feet.
- Forecast...The river is expected to fall below flood stage
late Thursday evening and continue falling to 9.6 feet
Tuesday, August 25.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
Fld Observed Forecasts (7 pm CDT)
Location Stg Stg Day/Time Wed Thu Fri
Sangamon River
Monticello 13.0 16.9 Tue 8 pm CDT 15.3 13.2 12.3
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
Deubelbeiss297
WGUS83 KILX 191356
FLSILX
Flood Statement
National Weather Service Lincoln IL
856 AM CDT Wed Aug 19 2026
...The Flood Warning is extended for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.River levels continue to decrease, and are currently projected to
drop below flood stage by Friday morning. However, nearby heavy rain
expected later today has the potential to change these projections,
if the storms form in a different location.
The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Additional information is available at www.weather.gov.
&&
ILC147-200600-
/O.EXT.KILX.FL.W.0039.000000T0000Z-260821T1800Z/
/MNTI2.2.ER.260816T1055Z.260818T0800Z.260821T1200Z.NO/
856 AM CDT Wed Aug 19 2026
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY FRIDAY AFTERNOON...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Sangamon River at Monticello.
* WHEN...Until early Friday afternoon.
* ADDITIONAL DETAILS...
- At 8:00 AM CDT Wednesday the stage was 16.3 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 8:00 AM CDT Wednesday was 17.2 feet.
- Forecast...The river is expected to fall below flood stage
Friday morning and continue falling to 10.1 feet Wednesday,
August 26.
- Flood stage is 13.0 feet.
&&
Fld Observed Forecasts (7 am CDT)
Location Stg Stg Day/Time Thu Fri Sat
Sangamon River
Monticello 13.0 16.3 Wed 8 am CDT 14.3 13.0 12.7
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
Geelhart279
WGUS83 KILX 200212 RRA
FLSILX
Flood Statement
National Weather Service Lincoln IL
912 PM CDT Wed Aug 19 2026
...The Flood Warning continues for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Additional information is available at www.weather.gov.
&&
ILC147-201815-
/O.CON.KILX.FL.W.0039.000000T0000Z-260821T1800Z/
/MNTI2.2.ER.260816T1055Z.260818T0800Z.260821T1200Z.NO/
912 PM CDT Wed Aug 19 2026
...FLOOD WARNING REMAINS IN EFFECT UNTIL EARLY FRIDAY AFTERNOON...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Sangamon River at Monticello.
* WHEN...Until early Friday afternoon.
* ADDITIONAL DETAILS...
- At 9:00 PM CDT Wednesday the stage was 15.5 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:00 PM CDT Wednesday was 16.8 feet.
- Forecast...The river is expected to fall below flood stage
Friday morning and continue falling to 9.1 feet Wednesday,
August 26.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
Fld Observed Forecasts (7 pm CDT)
Location Stg Stg Day/Time Thu Fri Sat
Sangamon River
Monticello 13.0 15.5 Wed 9 pm CDT 13.7 12.3 11.1
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
Copple440
WGUS83 KILX 201455
FLSILX
Flood Statement
National Weather Service Lincoln IL
Issued by National Weather Service St Louis MO
955 AM CDT Thu Aug 20 2026
...The Flood Warning is extended for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive cars
through flooded areas.
Additional information is available at www.weather.gov.
The next statement will be issued late tonight at 200 AM CDT.
&&
ILC147-210700-
/O.EXT.KILX.FL.W.0039.000000T0000Z-260823T0800Z/
/MNTI2.2.ER.260816T1055Z.260818T0800Z.260823T0200Z.NO/
955 AM CDT Thu Aug 20 2026
...FLOOD WARNING NOW IN EFFECT UNTIL LATE SATURDAY NIGHT...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Sangamon River at Monticello.
* WHEN...Until late Saturday night.
* ADDITIONAL DETAILS...
- At 9:00 AM CDT Thursday the stage was 15.5 feet.
- Recent Activity...The maximum river stage in the 24 hours ending
at 9:00 AM CDT Thursday was 16.2 feet.
- Forecast...The river is expected to fall below flood stage late
Saturday evening and continue falling to 9.7 feet Thursday,
August 27.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
All Times CDT Fld Observed Forecasts (7 am)
Location Stg Stg Day/Time Fri Sat Sun
Sangamon River
Monticello 13.0 15.5 Thu 9 am 14.7 13.6 12.6
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$164
WGUS83 KILX 210154
FLSILX
Flood Statement
National Weather Service Lincoln IL
854 PM CDT Thu Aug 20 2026
...The Flood Warning is extended for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive cars
through flooded areas.
Additional information is available at www.weather.gov.
The next statement will be issued Friday morning at 900 AM CDT.
&&
ILC147-211400-
/O.EXT.KILX.FL.W.0039.000000T0000Z-260823T1600Z/
/MNTI2.2.ER.260816T1055Z.260818T0800Z.260823T1000Z.NO/
854 PM CDT Thu Aug 20 2026
...FLOOD WARNING NOW IN EFFECT UNTIL SUNDAY MORNING...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Sangamon River at Monticello.
* WHEN...Until Sunday morning.
* ADDITIONAL DETAILS...
- At 8:00 PM CDT Thursday the stage was 15.6 feet.
- Recent Activity...The maximum river stage in the 24 hours ending
at 8:00 PM CDT Thursday was 15.7 feet.
- Forecast...The river is expected to fall below flood stage early
Sunday morning and continue falling to 9.6 feet Thursday, August
27.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
All Times CDT Fld Observed Forecasts (7 pm)
Location Stg Stg Day/Time Fri Sat Sun
Sangamon River
Monticello 13.0 15.6 Thu 8 pm 14.6 13.4 12.4
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$717
WGUS83 KILX 211414
FLSILX
Flood Statement
National Weather Service Lincoln IL
914 AM CDT Fri Aug 21 2026
...The Flood Warning is extended for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay tuned
for further updates on this flooding situation.
Additional information is available at www.weather.gov.
The next statement will be issued this evening at 915 PM CDT.
&&
ILC147-220215-
/O.EXT.KILX.FL.W.0039.000000T0000Z-260823T1800Z/
/MNTI2.2.ER.260816T1055Z.260818T0800Z.260823T1200Z.NO/
914 AM CDT Fri Aug 21 2026
...FLOOD WARNING NOW IN EFFECT UNTIL SUNDAY AFTERNOON...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Sangamon River at Monticello.
* WHEN...Until Sunday afternoon.
* ADDITIONAL DETAILS...
- At 9:00 AM CDT Friday the stage was 15.1 feet.
- Recent Activity...The maximum river stage in the 24 hours ending
at 9:00 AM CDT Friday was 15.7 feet.
- Forecast...The river is expected to fall below flood stage Sunday
morning and continue falling to 9.5 feet Friday, August 28.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
All Times CDT Fld Observed Forecasts (7 am)
Location Stg Stg Day/Time Sat Sun Mon
Sangamon River
Monticello 13.0 15.1 Fri 9 am 14.0 13.0 12.1
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$006
WGUS83 KILX 211624
FLSILX
Flood Statement
National Weather Service Lincoln IL
1124 AM CDT Fri Aug 21 2026
...The Flood Warning continues for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay tuned
for further updates on this flooding situation.
Additional information is available at www.weather.gov.
The next statement will be issued this evening at 1130 PM CDT.
&&
ILC147-220430-
/O.CON.KILX.FL.W.0039.000000T0000Z-260823T1800Z/
/MNTI2.2.ER.260816T1055Z.260818T0800Z.260823T1200Z.NO/
1124 AM CDT Fri Aug 21 2026
...FLOOD WARNING REMAINS IN EFFECT UNTIL SUNDAY AFTERNOON...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Sangamon River at Monticello.
* WHEN...Until Sunday afternoon.
* IMPACTS...At 13.0 feet, Flooding of agricultural areas begins.
* ADDITIONAL DETAILS...
- At 11:00 AM CDT Friday the stage was 14.9 feet.
- Recent Activity...The maximum river stage in the 24 hours ending
at 11:00 AM CDT Friday was 15.7 feet.
- Forecast...The river is expected to fall below flood stage Sunday
morning and continue falling to 9.5 feet Friday, August 28.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
All Times CDT Fld Observed Forecasts (1 pm)
Location Stg Stg Day/Time Sat Sun Mon
Sangamon River
Monticello 13.0 14.9 Fri 11 am 13.8 12.8 11.8
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
DRH694
WGUS83 KILX 211827
FLSILX
Flood Statement
National Weather Service Lincoln IL
127 PM CDT Fri Aug 21 2026
...The Flood Warning continues for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay tuned
for further updates on this flooding situation.
Additional information is available at www.weather.gov.
The next statement will be issued late tonight at 130 AM CDT.
&&
ILC147-220630-
/O.CON.KILX.FL.W.0039.000000T0000Z-260823T1800Z/
/MNTI2.2.ER.260816T1055Z.260818T0800Z.260823T1200Z.NO/
127 PM CDT Fri Aug 21 2026
...FLOOD WARNING REMAINS IN EFFECT UNTIL SUNDAY AFTERNOON...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Sangamon River at Monticello.
* WHEN...Until Sunday afternoon.
* IMPACTS...At 13.0 feet, Flooding of agricultural areas begins.
* ADDITIONAL DETAILS...
- At 1:00 PM CDT Friday the stage was 14.8 feet.
- Recent Activity...The maximum river stage in the 24 hours ending
at 1:00 PM CDT Friday was 15.7 feet.
- Forecast...The river is expected to fall below flood stage Sunday
morning and continue falling to 9.5 feet Friday, August 28.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
All Times CDT Fld Observed Forecasts (1 pm)
Location Stg Stg Day/Time Sat Sun Mon
Sangamon River
Monticello 13.0 14.8 Fri 1 pm 13.8 12.8 11.8
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
DRH519
WGUS83 KILX 211920
FLSILX
Flood Statement
National Weather Service Lincoln IL
220 PM CDT Fri Aug 21 2026
...The Flood Warning continues for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay tuned
for further updates on this flooding situation.
Additional information is available at www.weather.gov.
The next statement will be issued late tonight at 230 AM CDT.
&&
ILC147-220730-
/O.CON.KILX.FL.W.0039.000000T0000Z-260823T1800Z/
/MNTI2.2.ER.260816T1055Z.260818T0800Z.260823T1200Z.NO/
220 PM CDT Fri Aug 21 2026
...FLOOD WARNING REMAINS IN EFFECT UNTIL SUNDAY AFTERNOON...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Sangamon River at Monticello.
* WHEN...Until Sunday afternoon.
* IMPACTS...At 13.0 feet, Flooding of agricultural areas begins.
* ADDITIONAL DETAILS...
- At 2:00 PM CDT Friday the stage was 14.7 feet.
- Recent Activity...The maximum river stage in the 24 hours ending
at 2:00 PM CDT Friday was 15.7 feet.
- Forecast...The river is expected to fall below flood stage Sunday
morning and continue falling to 9.5 feet Friday, August 28.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
All Times CDT Fld Observed Forecasts (1 pm)
Location Stg Stg Day/Time Sat Sun Mon
Sangamon River
Monticello 13.0 14.7 Fri 2 pm 13.8 12.8 11.8
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
DRH155
WGUS83 KILX 220219
FLSILX
Flood Statement
National Weather Service Lincoln IL
919 PM CDT Fri Aug 21 2026
...The Flood Warning is extended for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay tuned
for further updates on this flooding situation.
Additional information is available at www.weather.gov.
The next statement will be issued Saturday morning at 930 AM CDT.
&&
ILC147-221430-
/O.EXT.KILX.FL.W.0039.000000T0000Z-260823T2100Z/
/MNTI2.2.ER.260816T1055Z.260818T0800Z.260823T1500Z.NO/
919 PM CDT Fri Aug 21 2026
...FLOOD WARNING NOW IN EFFECT UNTIL SUNDAY AFTERNOON...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Sangamon River at Monticello.
* WHEN...Until Sunday afternoon.
* IMPACTS...At 13.0 feet, Flooding of agricultural areas begins.
* ADDITIONAL DETAILS...
- At 9:00 PM CDT Friday the stage was 14.3 feet.
- Recent Activity...The maximum river stage in the 24 hours ending
at 9:00 PM CDT Friday was 15.6 feet.
- Forecast...The river is expected to fall below flood stage late
Sunday morning and continue falling to 9.4 feet Friday, August
28.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
All Times CDT Fld Observed Forecasts (7 pm)
Location Stg Stg Day/Time Sat Sun Mon
Sangamon River
Monticello 13.0 14.3 Fri 9 pm 13.5 12.7 12.1
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
25139
WGUS83 KILX 221511
FLSILX
Flood Statement
National Weather Service Lincoln IL
1011 AM CDT Sat Aug 22 2026
...The Flood Warning continues for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay tuned
for further updates on this flooding situation.
Additional information is available at www.weather.gov.
The next statement will be issued this evening at 1015 PM CDT.
&&
ILC147-230315-
/O.EXT.KILX.FL.W.0039.000000T0000Z-260823T0600Z/
/MNTI2.2.ER.260816T1055Z.260818T0800Z.260823T0000Z.NO/
1011 AM CDT Sat Aug 22 2026
...FLOOD WARNING NOW IN EFFECT UNTIL LATE TONIGHT...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Sangamon River at Monticello.
* WHEN...Until late tonight.
* ADDITIONAL DETAILS...
- At 10:00 AM CDT Saturday the stage was 13.4 feet.
- Recent Activity...The maximum river stage in the 24 hours ending
at 10:00 AM CDT Saturday was 15.0 feet.
- Forecast...The river is expected to fall below flood stage this
evening and continue falling to 9.1 feet Saturday, August 29.
- Flood stage is 13.0 feet.
&&
All Times CDT Fld Observed Forecasts (1 pm)
Location Stg Stg Day/Time Sun Mon Tue
Sangamon River
Monticello 13.0 13.4 Sat 10 am 12.4 11.5 10.6
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
Geelhart179
WGUS83 KILX 230000
FLSILX
Flood Statement
National Weather Service Lincoln IL
700 PM CDT Sat Aug 22 2026
...The Flood Warning is cancelled for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
ILC147-230100-
/O.CAN.KILX.FL.W.0039.000000T0000Z-260823T0000Z/
/MNTI2.2.ER.260816T1055Z.260818T0800Z.000000T0000Z.NO/
700 PM CDT Sat Aug 22 2026
...FLOOD WARNING IS CANCELLED...
The Flood Warning is cancelled for
the Sangamon River at Monticello.
* ADDITIONAL DETAILS...
- At 6:00 PM CDT Saturday the stage was 12.9 feet.
- Forecast...The river is expected to fall to 9.1 feet Saturday,
August 29.
- http://www.weather.gov/safety/flood
&&
All Times CDT Fld Observed Forecasts (7 pm)
Location Stg Stg Day/Time Sun Mon Tue
Sangamon River
Monticello 13.0 12.9 Sat 6 pm 12.2 11.2 10.4
&&
LAT...LON 4019 8847 4008 8847 4001 8854 3990 8874
4000 8874 4006 8861
$$
MJAWhat forecasters said that day
The local office's own words before this river flood 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 river flood warning went out at Aug 15, 6:18 AM CDT, 4 hours 1 minute earlier. Its key messages:
- There is flash flooding ongoing across portions of central Illinois this morning, where thunderstorms track over areas that have already seen 4-6 inches of rain since Thursday. Areas north of a Havana to Bloomington line are most at risk.
- Storms have the potential to produce damaging winds today and tomorrow. SPC has a marginal (level 1 of 5) risk of severe weather for the weekend.
- The heat and humidity remain a concern for the weekend, with the hottest conditions in the southern half of the state.
Area forecast discussion, Aug 15, 6:18 AM CDT, 4 hours 1 minute before
Area Forecast Discussion National Weather Service Lincoln IL 618 AM CDT Sat Aug 15 2026 .KEY MESSAGES... - There is flash flooding ongoing across portions of central Illinois this morning, where thunderstorms track over areas that have already seen 4-6 inches of rain since Thursday. Areas north of a Havana to Bloomington line are most at risk. - Storms have the potential to produce damaging winds today and tomorrow. SPC has a marginal (level 1 of 5) risk of severe weather for the weekend. - The heat and humidity remain a concern for the weekend, with the hottest conditions in the southern half of the state. && .DISCUSSION... Issued at 220 AM CDT Sat Aug 15 2026 Tonight, storms are moving across central IL. There is a low risk (but non-zero) for damaging winds within these storms, but the main concern is the flash flooding risk. WPC has areas near and north of I-72 in a moderate risk (level 3 of 4) for excessive rainfall for the overnight hours. The 00z sounding shows the environment having PWATs of 2.2-2.4 inches. Over the last few days, this area has gotten 3-6 inches of rain, with some locally higher amounts. The storms passing through tonight are expected to drop another 2-5 inches with the LPMM suggesting some localized pockets of up to 10 inches. Flash flood guidance seems a bit generous (too high). If the pockets of higher rain set up over where the ground is already extremely saturated, flash flooding is likely. For the remainder of the day after this morning round of convection exits about 15-16z, there is a marginal risk for severe weather for additional activity that will move through. It will be very similar to what has happened over the last few days. The next round of MCS activity will move into central IL by late evening and will continue into the overnight hours. The main concern will be damaging winds and the heavy rain potential. There is another marginal risk for severe weather again tomorrow for areas south of a Schuyler to McLean County line with a similar environment in place as previous days. The forecast will continue to evolve as we get newer runs of the models. Temperatures remain hot and humid. The heat advisory for south of I- 70 is valid through Sunday. Heat indices of 100-110 degrees are forecast through Sunday, but how far north these heat indices get will depend solely on the convection location. Like yesterday for example, the convection lingered further south longer than forecast, so heat indices struggled to hit triple digits. Next week may bring us a brief break in the active weather and the heat briefly. A high pressure area will set up over the Upper Mississippi Valley / Great Lakes region by Monday, behind a cold front that will move through central IL during the day. Temperatures starting Monday into much of the next week will be mainly in the upper 70s to 80s for highs and 60s to low 70s for lows. && .AVIATION /12Z TAFS THROUGH 12Z SUNDAY/... Issued at 618 AM CDT Sat Aug 15 2026 Thunderstorms are moving across central Illinois and are expected to continue into mid morning before exiting east of the area. MVFR/VFR ceilings currently in place. Ceilings may bounce around if a stronger shower/storm moves through. Everyone should be VFR by early afternoon. Winds will become more southwesterly as the day goes on. Another round of convection is expected overnight, but timing and location are uncertain as of the 12z TAF period. && .ILX WATCHES/WARNINGS/ADVISORIES... Flood Watch until 10 AM CDT this morning for ILZ027>031- 036>038-040-041-043>046-055-057. Heat Advisory until 8 PM CDT Sunday for ILZ066>068-071>073. && KEY MESSAGES...Copple DISCUSSION...Copple AVIATION...Copple
Hazardous weather outlook, Aug 14, 3:00 PM CDT, 19 hours 19 minutes before
Hazardous Weather Outlook National Weather Service Lincoln IL 300 PM CDT Fri Aug 14 2026 ILZ027>031-036>038-040>057-061>063-066>068-071>073-151100- 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- 300 PM CDT Fri Aug 14 2026 This Hazardous Weather Outlook is for central Illinois, east central Illinois, southeast Illinois and west central Illinois. .DAY ONE...Tonight. Widespread thunderstorm activity is likely tonight, mainly north of I-72. Locally strong to severe storms and flash flooding are possible. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Hot and humid conditions will peak over the area this weekend. Peak afternoon heat indices will range from 103 to 112 Saturday, and 100 to 105 Sunday. Daily chances for thunderstorms exist through the weekend, mainly north of I-70 for Saturday. Some of these storms could be severe and produce heavy rain. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed after midnight. 37
In the hours before
Local storm report, Aug 15, 10:00 AM CDT, 19 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
1000 AM CDT Sat Aug 15 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0937 AM Flash Flood 1 NW Muncie 40.12N 87.85W
08/15/2026 Vermilion IL Law Enforcement
I-74 has water across the road between exits
200 and 206. Eastbound I-74 traffic is being
diverted to US Rt 150 at exit 200 and
westbound I-74 traffic is being diverted to
US Rt 150 at exit 210.
&&
ShimonLocal storm report, Aug 15, 10:02 AM CDT, 17 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
1002 AM CDT Sat Aug 15 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0649 AM Rain Bryant 40.47N 90.09W
08/15/2026 M7.87 Inch Fulton IL Public
&&Local storm report, Aug 15, 10:05 AM CDT, 14 minutes before
Preliminary Local Storm Report...Summary
National Weather Service Lincoln IL
1005 AM CDT Sat Aug 15 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0135 AM Flash Flood 1 W Normal 40.51N 89.00W
08/15/2026 McLean IL Public
Adelaide and Bryan streets in Bloomington
are impassible and underwater, relayed by
broadcast media from viewer.
0135 AM Flash Flood Bloomington 40.48N 88.99W
08/15/2026 McLean IL Public
Several flooded roads reported on Douglas
Street and viaducts underwater, relayed by
broadcast media from viewer.
0144 AM Flash Flood Tremont 40.53N 89.49W
08/15/2026 Tazewell IL Public
6 inches of water flowing over E Pearl
Street.
0209 AM Flash Flood 3 WNW Mackinaw 40.56N 89.40W
08/15/2026 Tazewell IL Public
Allentown Road about a mile west of
Allentown is flooded over.
0224 AM Flash Flood 2 ESE Bloomington 40.47N 88.96W
08/15/2026 McLean IL 911 Call Center
Vehicle stalled in flood waters, road is
impassable at Oakland Ave/Four Seasons Rd
and Prospect Rd / Grandview Dr.
0244 AM Flash Flood 1 ENE Bloomington 40.49N 88.97W
08/15/2026 McLean IL 911 Call Center
Vehicle stalled in floodwater, road is
impassable.
0252 AM Flash Flood Minier 40.43N 89.31W
08/15/2026 Tazewell IL Broadcast Media
Water entering basement egress window at a
home in Minier.
0318 AM Flash Flood Fisher 40.32N 88.35W
08/15/2026 Champaign IL Broadcast Media
Reports of basements flooding in Fisher.
0446 AM Rain 1 S Danville 40.13N 87.63W
08/15/2026 M1.50 Inch Vermilion IL Emergency Mngr
1.50 inches of rainfall measured in last
30-40 minutes in Danville.
0506 AM Rain Brocton 39.72N 87.93W
08/15/2026 M4.10 Inch Edgar IL Trained Spotter
Total rainfall from overnight storms, rain
continuing at time of report.
0519 AM Flash Flood Fisher 40.32N 88.35W
08/15/2026 Champaign IL Broadcast Media
Street flooding with standing water on
Sangamon St and 1st Street in Fisher.
0522 AM Rain Fisher 40.32N 88.35W
08/15/2026 M6.50 Inch Champaign IL Trained Spotter
Total rainfall since approximately 10pm with
rain continuing at time of report.
0530 AM Rain Knoxville 40.91N 90.29W
08/15/2026 M1.25 Inch Knox IL Trained Spotter
Rainfall total since midnight with rain
continuing at time of report.
0536 AM Flash Flood Rantoul 40.31N 88.16W
08/15/2026 Champaign IL Broadcast Media
Route 136 viaduct in Rantoul is full of
water and the road is closed.
0545 AM Flash Flood Rantoul 40.30N 88.16W
08/15/2026 Champaign IL Broadcast Media
Many neighborhood roads are flooded over
curbs across Rantoul.
0609 AM Flash Flood 2 NNE Urbana 40.14N 88.19W
08/15/2026 Champaign IL Public
4 of standing water in their yard reported
by viewer relayed by broadcast media.
0610 AM Flash Flood Bloomington 40.48N 89.00W
08/15/2026 McLean IL 911 Call Center
Most roadways being reported with standing
water.
0614 AM Rain 2 SE Collison 40.21N 87.78W
08/15/2026 M3.25 Inch Vermilion IL Cocorahs
Rainfall total with additional rain falling
at time of ob.
0649 AM Rain Bryant 40.47N 90.09W
08/15/2026 M7.87 Inch Fulton IL Public
0700 AM Rain Roanoke 40.80N 89.19W
08/15/2026 M1.10 Inch Woodford IL CO-OP Observer
24 hour rainfall report.
0700 AM Rain 4 NNW Hopedale 40.47N 89.45W
08/15/2026 M5.75 Inch Tazewell IL NWS Employee
Rainfall total since approximately 11pm with
more rain falling at time of report.
0700 AM Rain 2 NNW Homer 40.06N 87.96W
08/15/2026 M1.10 Inch Champaign IL Trained Spotter
24-hour rainfall at 7:00 a.m. near Homer 2.0
N with moderate to heavy rain at ob time.
0700 AM Flash Flood 1 S Thomasboro 40.23N 88.19W
08/15/2026 Champaign IL Broadcast Media
Report of a home in South Thomasboro
beginning to take on water on the first
floor from viewer relayed by broadcast
media.
0704 AM Rain 1 WSW Neoga 39.32N 88.46W
08/15/2026 M1.10 Inch Cumberland IL CO-OP Observer
24 hour rainfall report.
0710 AM Rain 2 NW Central Illinois A 40.50N 88.93W
08/15/2026 M5.10 Inch McLean IL NWS Employee
Rainfall total from 1230am to 710am with
additional rain falling at time of
observation.
0713 AM Rain 4 SSW Alta 40.77N 89.67W
08/15/2026 M1.92 Inch Peoria IL NWS Employee
Overnight rainfall total with rain
continuing at time of observation.
0849 AM Flash Flood 5 W Fiatt 40.56N 90.26W
08/15/2026 Fulton IL Emergency Mngr
Illinois Route 9 at Turkey Creek closed due
to Water over roadway.
0855 AM Flash Flood 1 NW Muncie 40.13N 87.86W
08/15/2026 Vermilion IL Public
Two creeks out of their banks and over East
1800 North Rd. Relayed from media.
0903 AM Flash Flood 2 NE Oakwood 40.14N 87.75W
08/15/2026 Vermilion IL Emergency Mngr
West entrance to Kickapoo State Park closed
due to water over roadway.
0908 AM Flash Flood 4 SSE Gifford 40.26N 87.99W
08/15/2026 Champaign IL Broadcast Media
Bridge washed out on County Road 2500 East.
0915 AM Rain Lewistown 40.40N 90.16W
08/15/2026 M4.20 Inch Fulton IL Emergency Mngr
Rainfall overnight.
0930 AM Flash Flood 4 N Smithfield 40.53N 90.29W
08/15/2026 Fulton IL Emergency Mngr
Farm fields flooded near Put Creek.
0937 AM Flash Flood 1 NW Muncie 40.12N 87.85W
08/15/2026 Vermilion IL Law Enforcement
I-74 has water across the road between exits
200 and 206. Eastbound I-74 traffic is being
diverted to US Rt 150 at exit 200 and
westbound I-74 traffic is being diverted to
US Rt 150 at exit 210.
&&Local storm report, Aug 15, 10:10 AM CDT, 9 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
1010 AM CDT Sat Aug 15 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1008 AM Rain 2 NW Washington 40.73N 89.44W
08/15/2026 M2.68 Inch Tazewell IL Broadcast Media
27-hr rainfall total. Friday 7 am to
Saturday 10 am.
&&
ShimonLocal storm report, Aug 15, 10:13 AM CDT, 6 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
1013 AM CDT Sat Aug 15 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1000 AM Flood 4 NNW Hopedale 40.47N 89.45W
08/15/2026 Tazewell IL NWS Employee
Iron Mountain Rd is impassable at Prairie
Creek due to deep water flowing across the
road.
&&
ShimonLocal storm report, Aug 15, 10:14 AM CDT, 5 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
1014 AM CDT Sat Aug 15 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1013 AM Rain 1 ENE Normal 40.52N 88.97W
08/15/2026 M3.30 Inch McLean IL Public
Total rainfall as of 10 am.
&&
AutenThe office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 11:56 PM CDT | Flash Flood Warning | ILX | Fulton, Knox, Mason, Peoria, Tazewell, Woodford | 7 hr |
| Aug 15, 1:09 AM CDT | Flash Flood Warning | ILX | McLean | 6 hr |
| Aug 15, 1:23 AM CDT | Severe Thunderstorm Warning | ILX | Fulton, Mason | 67 min |
| Aug 15, 1:51 AM CDT | Severe Thunderstorm Warning | ILX | Fulton | 24 min |
| Aug 15, 2:19 AM CDT | Flash Flood Warning | ILX | McLean | 5 hr |
| Aug 15, 2:23 AM CDT | Severe Thunderstorm Warning | ILX | Peoria, Tazewell | 38 min |
| Aug 15, 2:36 AM CDT | Flash Flood Warning | ILX | McLean | 6 hr |
| Aug 15, 3:23 AM CDT | Flash Flood Warning | ILX | Champaign | 5 hr |
| Aug 15, 3:43 AM CDT | Severe Thunderstorm Warning | ILX | Cass, Fulton, Mason, Menard, Morgan, Schuyler and 1 more | 62 min |
| Aug 15, 3:54 AM CDT | Flash Flood Warning | ILX | Vermilion | 4 hr |
| Aug 15, 4:29 AM CDT | Special Weather Statement | ILX | Logan, Menard, Sangamon | 31 min |
| Aug 15, 5:33 AM CDT | Areal Flood Advisory | ILX | Morgan | 3 hr |
| Aug 15, 5:48 AM CDT | Flash Flood Warning | ILX | Champaign, Vermilion | 8 hr |
| Aug 15, 6:24 AM CDT | Special Weather Statement | ILX | Champaign, Piatt, Vermilion | 36 min |
| Aug 15, 6:37 AM CDT | Areal Flood Warning | ILX | Fulton, Knox, Mason, Peoria, Tazewell, Woodford | 27 hr |
| Aug 15, 7:33 AM CDT | Areal Flood Warning | ILX | McLean | 65 min |
| Aug 15, 7:40 AM CDT | Areal Flood Warning | ILX | McLean | 26 hr |
| Aug 15, 8:04 AM CDT | Flash Flood Warning | ILX | McLean | 5 hr |
| Aug 15, 8:38 AM CDT | Flash Flood Warning | ILX | McLean | 4 hr |
| Aug 15, 10:11 AM CDT | River Flood Warning | ILX | Cass, Fulton, Mason | 13 days |
| Aug 15, 10:12 AM CDT | River Flood Warning | ILX | Brown, Cass, Morgan, Schuyler | 14 days |
| Aug 15, 12:40 PM CDT | Areal Flood Warning | ILX | McLean | 21 hr |
| Aug 15, 1:40 PM CDT | Areal Flood Warning | ILX | Champaign, Vermilion | 46 hr |
| Aug 15, 1:46 PM CDT | River Flood Warning | ILX | McLean, Tazewell, Woodford | 20 hr |
Nearby
River Flood Warnings in Illinois, 2026Every river flood 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.