District 1 SKYWARN spotters give the National Weather Service real-time ground truth during severe weather across Northwest Indiana.
329 PM CDT Mon Apr 13 2026 / Chicago/Romeoville IL
Spotter reports may be needed this evening. GENERAL STORM MOTION OF THE DAY: Moving toward the the east-northeast at around 45 mph.
Limited Thunderstorm Risk...with an associated
Limited Flooding Risk
Isolated to scattered thunderstorms are expected through early
this evening, a few severe of these storms may produce instances
of large hail and damaging winds. Locally heavy rainfall is also
likely to accompany these storms.
Additional weakening gusty thunderstorms may approach from the
northwest late tonight.
Waves of storms are expected Tuesday PM through Wednesday. Some
may be severe with all hazards including flash flooding.
Flood Warning issued April 13 at 10:13AM CDT until April 13 at 7:00PM CDT by NWS Chicago IL
...The Flood Warning continues for the following rivers in Illinois...Indiana... Fox River at Algonquin Lock & Dam tailwater affecting McHenry, Lake IL and Kane Counties. Kankakee River at Shelby affecting Newton and Lake IN Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Kankakee River from Near I-65 and De Motte downstream to IL/IN state line, including the Shelby gauge. * WHEN...Until this evening. * IMPACTS...At 10.5 feet, Water overflows low-lying river banks along Bluegrass Road east of Sumava Resorts and along Westwood Drive and Island Boulevard near Shelby. Water begins to be diverted through the Blackberry Marsh Spillway to reduce flood impacts. * ADDITIONAL DETAILS... - At 9:45 AM CDT Monday the stage was 10.8 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:45 AM CDT Monday was 11.2 feet. - Forecast...The river is expected to fall below flood stage this evening and continue falling to 7.5 feet Monday, April 20. - Flood stage is 10.5 feet. - http://www.weather.gov/safety/flood
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 this evening.
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