6 products issued by NWS for: Niles IL
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1218 PM CDT Fri Apr 17 2026
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-181730-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1218 PM CDT Fri Apr 17 2026 /118 PM EDT Fri Apr 17 2026/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
Weather hazards expected...
Significant Thunderstorm Risk...with an associated:
Level 3 of 5 Damaging Wind Risk...up to 70 mph.
Level 2 of 5 Tornado Risk.
Level 1 of 5 Large Hail Risk...up to one inch in diameter.
Elevated Flooding Risk.
DISCUSSION...
A line of thunderstorms is expected to work across northern
Illinois this evening. Thunderstorms may be severe with damaging
wind gusts, hail, and perhaps a few tornadoes. Heavy rain may
also lead to instances of flash flooding.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Saturday...
Elevated Frost and Freeze Risk.
Sunday...
Significant Frost and Freeze Risk.
.SPOTTER INFORMATION STATEMENT...
Spotters will likely be needed this evening.
GENERAL STORM MOTION OF THE DAY:
Moving toward the northeast at 45 mph and then becoming east.
$$
Tornado Watch
WATCH COUNTY NOTIFICATION FOR WATCH 131 NATIONAL WEATHER SERVICE CHICAGO IL 1036 PM CDT FRI APR 17 2026 ILC031-043-053-075-091-197-180445- /O.EXP.KLOT.TO.A.0131.000000T0000Z-260418T0400Z/ THE NATIONAL WEATHER SERVICE WILL ALLOW TORNADO WATCH 131 TO EXPIRE AT 11 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN ILLINOIS THIS ALLOWS TO EXPIRE 6 COUNTIES IN EAST CENTRAL ILLINOIS FORD IROQUOIS IN NORTHEAST ILLINOIS COOK DUPAGE KANKAKEE WILL THIS INCLUDES THE CITIES OF BOLINGBROOK, BOURBONNAIS, CAROL STREAM, CHICAGO, DOWNERS GROVE, EVANSTON, GIBSON CITY, GILMAN, JOLIET, KANKAKEE, LEMONT, LOMBARD, NAPERVILLE, OAK LAWN, ORLAND PARK, PARK FOREST, PAXTON, SCHAUMBURG, WATSEKA, WHEATON, AND WILMINGTON. $$
Flood Advisory
Flood Advisory
National Weather Service Chicago IL
941 PM CDT Fri Apr 17 2026
ILC031-043-197-180845-
/O.NEW.KLOT.FA.Y.0020.260418T0241Z-260418T0845Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-Will IL-
941 PM CDT Fri Apr 17 2026
...FLOOD ADVISORY IN EFFECT UNTIL 345 AM CDT SATURDAY...
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...A portion of northeast Illinois, including the following
counties, Cook, DuPage and Will.
* WHEN...Until 345 AM CDT Saturday.
* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Roads and streets may
be flooded.
* ADDITIONAL DETAILS...
- At 940 PM CDT, Doppler radar indicated rainfall rates up to 1
inch per hour moving into the area. Up to 1 inch of rainfall
was been observed so far in northern Cook County due to
earlier rainfall. Roadway and underpass flooding may occur
shortly after the onset of heavy rainfall.
- Isolated rainfall up to 1 inch may occur across the area.
- Some locations that will experience flooding include...
Chicago, Aurora, Joliet, Naperville, Elgin, Cicero, Arlington
Heights, Evanston, Schaumburg, Bolingbrook, Palatine, Skokie,
Des Plaines, Orland Park, Tinley Park, Oak Lawn, Berwyn,
Mount Prospect, Wheaton and Hoffman Estates.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Advisory means minor flooding along waterways and other poor
drainage areas is imminent or may already be occurring. Persons in
the advisory area should use caution and avoid flood waters.
&&
LAT...LON 4207 8824 4215 8824 4215 8774 4212 8771
4208 8767 4199 8764 4197 8762 4195 8762
4191 8761 4190 8758 4188 8759 4188 8760
4187 8759 4185 8759 4177 8755 4176 8753
4147 8753 4146 8825 4206 8826
$$
WSL
Flood Watch
Flood Watch
National Weather Service Chicago IL
627 PM CDT Fri Apr 17 2026
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-180900-
/O.CON.KLOT.FA.A.0004.000000T0000Z-260418T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern
Cook-Central Cook-Southern Cook-Northern Will-Southern Will-
Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
Including the cities of Bourbonnais, Carol Stream, Mundelein,
Roselawn, Aurora, Schaumburg, Des Plaines, Naperville, Bradley,
Yorkville, Morocco, Morris, Oregon, Merrillville, Kankakee,
Fairbury, Fowler, Streator, Plano, Dixon, Calumet City, Oak
Forest, Evanston, Marseilles, Dwight, Gibson City, McHenry,
Sycamore, Orland Park, Pontiac, Crystal Lake, Bolingbrook, Elgin,
Downers Grove, Plainfield, Rensselaer, Crete, La Grange, Oak
Park, Manhattan, Watseka, Cicero, Rockford, Minooka, Hammond,
Algonquin, Chesterton, Gary, Palatine, Mokena, Woodstock, Buffalo
Grove, Gurnee, Rochelle, Ottawa, Oxford, Belvidere, Oak Lawn,
Channahon, Wilmington, Byron, DeKalb, Gilman, Lemont, Mendota,
Northbrook, Oswego, Joliet, Paxton, Park Forest, Peotone,
Kentland, Wheaton, Lombard, DeMotte, Valparaiso, Chicago,
Waukegan, Beecher, La Salle, Coal City, and Portage
627 PM CDT Fri Apr 17 2026 /727 PM EDT Fri Apr 17 2026/
...FLOOD WATCH REMAINS IN EFFECT UNTIL 5 AM CDT /6 AM EDT/
SATURDAY...
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Much of northern and central Illinois and extreme
northwest Indiana.
* WHEN...Until 5 AM CDT Saturday.
* IMPACTS...Creeks and streams may rise out of their banks. Ongoing
river flooding may worsen. Flooding may occur in poor drainage and
urban areas. Roads and streets may be flooded. Area creeks and
streams are already elevated, increasing the risk of flooding due
to additional rainfall.
* ADDITIONAL DETAILS...
- A line of thunderstorms, some capable of producing rainfall
rates of up to 2 inches per hour, will move across the area
this evening into the early overnight hours. Despite the
expected relatively fast storm movement, anomalously high
atmospheric moisture content will support high rainfall
rates. In many areas, soil moisture remains very high,
including near the Illinois-Wisconsin border where nearly
saturated soils exist due to recent heavy rainfall. While
many areas may see lighter accumulations less than 0.5
inches, soils will be very sensitive to rainfall. Areas near
and downstream of heavy rainfall, particularly urban areas
and locations in far northern Illinois, may see flash
flooding and river flooding impacts, some locally
significant.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Watch for flash flooding means rapid-onset flooding is
possible, but not yet certain, based upon the latest forecasts.
Flash flooding is a dangerous situation. Persons with interests
along area rivers, creeks, and other waterways should monitor the
latest forecasts and be prepared to take action should flooding
develop.
&&
$$
- Izzi
Flood Warning
Flood Statement
National Weather Service Chicago IL
1105 AM CDT Fri Apr 17 2026
...The Flood Warning is extended for the following rivers in
Illinois...
Des Plaines River at Lincolnshire affecting Cook and Lake IL
Counties.
Des Plaines River near Des Plaines affecting Cook County.
Des Plaines River near Gurnee affecting Lake IL County.
...The Flood Warning continues for the following rivers in
Illinois...
Des Plaines River near Russell affecting Lake IL County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Warning means water levels above flood stage are imminent or
may already be occurring. Persons along rivers and streams in the
warned area should take immediate precautions to protect life and
property.
These forecasts are based on observed precipitation as well as
forecast precipitation 24 hours into the future. Changes to the
rainfall forecast, or any additional rainfall after 24 hours, may
cause changes to these river forecasts.
Additional information is available at www.weather.gov.
The next statement will be issued by late tonight.
&&
ILC031-181015-
/O.EXT.KLOT.FL.W.0019.000000T0000Z-000000T0000Z/
/DSPI2.1.ER.260415T1630Z.260418T1800Z.000000T0000Z.NO/
1105 AM CDT Fri Apr 17 2026
...FLOOD WARNING NOW IN EFFECT UNTIL FURTHER NOTICE...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Des Plaines River from Palatine Road in Prospect Heights
downstream to Irving Park Road in Chicago, including the Des
Plaines gauge.
* WHEN...Until further notice.
* IMPACTS...At 17.0 feet, Central Road and Golf Road are threatened
in Des Plaines.
* ADDITIONAL DETAILS...
- At 10:45 AM CDT Friday the stage was 16.1 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 10:45 AM CDT Friday was 16.1 feet.
- Forecast...The river is expected to rise to crest near 16.5
feet tomorrow due to forecasted rainfall today and tonight.
- Flood stage is 15.0 feet.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4212 8794 4212 8784 4197 8780 4196 8790
$$
Flood Warning
Flood Statement
National Weather Service Chicago IL
1105 AM CDT Fri Apr 17 2026
...The Flood Warning is extended for the following rivers in
Illinois...
Des Plaines River at Lincolnshire affecting Cook and Lake IL
Counties.
Des Plaines River near Des Plaines affecting Cook County.
Des Plaines River near Gurnee affecting Lake IL County.
...The Flood Warning continues for the following rivers in
Illinois...
Des Plaines River near Russell affecting Lake IL County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Warning means water levels above flood stage are imminent or
may already be occurring. Persons along rivers and streams in the
warned area should take immediate precautions to protect life and
property.
These forecasts are based on observed precipitation as well as
forecast precipitation 24 hours into the future. Changes to the
rainfall forecast, or any additional rainfall after 24 hours, may
cause changes to these river forecasts.
Additional information is available at www.weather.gov.
The next statement will be issued by late tonight.
&&
ILC031-097-181015-
/O.EXT.KLOT.FL.W.0020.000000T0000Z-000000T0000Z/
/LDRI2.2.ER.260416T0400Z.260419T0600Z.000000T0000Z.NO/
1105 AM CDT Fri Apr 17 2026
...FLOOD WARNING NOW IN EFFECT UNTIL FURTHER NOTICE...
* WHAT...Minor flooding is occurring and moderate flooding is
forecast.
* WHERE...Des Plaines River from Townline Road in Libertyville
downstream to Palatine Road in Prospect Heights, including the
Lincolnshire gauge.
* WHEN...Until further notice.
* IMPACTS...At 14.0 feet, Residences threatened east of the river
just south of IL-22 (Half-Day Road). Lincolnshire Drive threatened
at Wiltshire Lane.
At 15.0 feet, Structures threatened along IL-22 (Half-Day Road)
just east of the river. Multiple structures threatened near and
west of US-45 (Milwaukee Avenue) and Deerfield Road. Deerfield
Road threatened near the river. Multiple trails inundated in
Half-Day Forest Preserve.
* ADDITIONAL DETAILS...
- At 9:45 AM CDT Friday the stage was 13.7 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:45 AM CDT Friday was 13.7 feet. The rate of climb
due to earlier rainfall has slowed.
- Forecast...The river is expected to crest near 14.5 feet on
Sunday due to forecasted rainfall today and tonight.
- Flood stage is 12.5 feet.
- Flood History...This crest compares to a previous crest of
14.4 feet on 05/01/2020.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4224 8797 4224 8788 4212 8784 4212 8794
$$