National Weather Service United States Department of Commerce

 

                        
963
FLUS43 KILX 161954
HWOILX

Hazardous Weather Outlook
National Weather Service Lincoln IL
254 PM CDT Sun Aug 16 2026

ILZ027>031-036>038-040-041-171200-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler-
Mason-
254 PM CDT Sun Aug 16 2026

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

.DAY ONE...Tonight.

Additional storms are possible this evening mainly east of the
Illinois River. Gusty winds and locally heavy rainfall will be the
primary hazards, but the overall severe weather threat is low.

Due to heavy rain, several rivers are in flood.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Thunderstorm chances return Tuesday night and Wednesday. A few
strong storms are possible Tuesday night northwest of the Illinois
River, otherwise locally heavy rain will be a primary hazard.

Flooding along the Spoon River is expected to subside by Tuesday,
but will continue on the Illinois River from Havana downstream for
several days.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated tonight.

$$

ILZ042>057-061-171200-
Logan-De Witt-Piatt-Champaign-Vermilion-Cass-Menard-Scott-Morgan-
Sangamon-Christian-Macon-Moultrie-Douglas-Coles-Edgar-Shelby-
254 PM CDT Sun Aug 16 2026

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

.DAY ONE...Tonight.

Scattered storms will continue to move across east central Illinois
late this afternoon, with gusty winds the main threat. Additional
storms are possible this evening west of I-55, spreading into eastern
Illinois toward midnight. A few strong to locally severe storms are
possible, with damaging winds and heavy rain the primary concerns.

Due to heavy rain, several rivers in east central Illinois are in
flood, and a few roads are still being impacted by high water.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Thunderstorm chances return Tuesday night and Wednesday. Locally
heavy rain will be the primary hazard.

Due to heavy rain, several rivers will be in flood for the next
several days.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed for a couple of more hours this
afternoon, and then again this evening from 7pm til just after
midnight.

Expected storm motion is toward the east around 40 mph.

$$

ILZ062-063-066>068-071>073-171200-
Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
254 PM CDT Sun Aug 16 2026

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

.DAY ONE...Tonight.

Hot and humid conditions will continue today, with heat index values
ranging from 100 to 105 degrees.

Storms are expected to develop in west central Illinois and move into
east central Illinois this evening, continuing to around midnight.
Some of these may be strong to severe, with damaging winds the main
concern. Heavy rain may result in areas of flooding, especially
tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Thunderstorm chances return Tuesday night and Wednesday. Locally
heavy rain will be the primary hazard.

River flooding will continue along the Wabash River for several
days.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening from 9pm til midnight.

Expected storm motion is toward the east around 40 mph.

$$

Auten



                

Severe weather outlook
 

Severe thunderstorm risk categories