Shellsburg Warnings, Watches and Advisories
NWS Active Alerts for IA - Map View
Flood Warning
Des Moines, IA; Louisa, IA; Henderson, IL; Mercer, IL
Flood Warning issued September 21 at 9:09PM CDT until September 25 at 7:00PM CDT by NWS Quad Cities IA IL
...The Flood Warning continues for the following rivers in Illinois...Iowa... Mississippi River at Gladstone LD18 affecting Des Moines and Henderson Counties. Mississippi River at Burlington affecting Hancock, Des Moines, Lee and Henderson Counties. ...The Flood Warning is extended for the following rivers in Illinois...Iowa... Mississippi River at Keithsburg affecting Louisa, Mercer, Des Moines and Henderson Counties. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Keithsburg. * WHEN...From Wednesday afternoon to Friday evening. * IMPACTS...At 14.5 feet, Water affects low lying areas in Oquawka. * ADDITIONAL DETAILS... - At 8:30 PM CDT Monday the stage was 12.1 feet. - Forecast...The river is expected to rise above flood stage early Wednesday afternoon to a crest of 14.3 feet early Thursday morning. It will then fall below flood stage early Friday morning. - Flood stage is 14.0 feet.
Severe
Observed
Immediate
September 21st, 2026 09:09:00 pm CDT
September 21st, 2026 09:09:00 pm CDT
September 22nd, 2026 09:15:00 pm CDT
Flood Warning
Des Moines, IA; Lee, IA; Hancock, IL; Henderson, IL
Flood Warning issued September 21 at 9:09PM CDT until September 26 at 1:00AM CDT by NWS Quad Cities IA IL
...The Flood Warning continues for the following rivers in Illinois...Iowa... Mississippi River at Gladstone LD18 affecting Des Moines and Henderson Counties. Mississippi River at Burlington affecting Hancock, Des Moines, Lee and Henderson Counties. ...The Flood Warning is extended for the following rivers in Illinois...Iowa... Mississippi River at Keithsburg affecting Louisa, Mercer, Des Moines and Henderson Counties. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Burlington. * WHEN...From Wednesday evening to late Friday night. * IMPACTS...At 15.0 feet, Agricultural flooding occurs. * ADDITIONAL DETAILS... - At 8:00 PM CDT Monday the stage was 13.2 feet. - Forecast...The river is expected to rise above flood stage late Wednesday evening to a crest of 15.3 feet early Thursday afternoon. It will then fall below flood stage Friday morning. - Flood stage is 15.0 feet.
Severe
Observed
Immediate
September 21st, 2026 09:09:00 pm CDT
September 21st, 2026 09:09:00 pm CDT
September 22nd, 2026 09:15:00 pm CDT
Flood Warning
Des Moines, IA; Henderson, IL
Flood Warning issued September 21 at 9:09PM CDT until September 26 at 9:00AM CDT by NWS Quad Cities IA IL
...The Flood Warning continues for the following rivers in Illinois...Iowa... Mississippi River at Gladstone LD18 affecting Des Moines and Henderson Counties. Mississippi River at Burlington affecting Hancock, Des Moines, Lee and Henderson Counties. ...The Flood Warning is extended for the following rivers in Illinois...Iowa... Mississippi River at Keithsburg affecting Louisa, Mercer, Des Moines and Henderson Counties. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Gladstone LD18. * WHEN...From Wednesday morning to Saturday morning. * ADDITIONAL DETAILS... - At 8:30 PM CDT Monday the stage was 8.2 feet. - Forecast...The river is expected to rise above flood stage late Wednesday morning to a crest of 10.7 feet early Thursday afternoon. It will then fall below flood stage Friday afternoon. - Flood stage is 10.0 feet.
Severe
Observed
Immediate
September 21st, 2026 09:09:00 pm CDT
September 21st, 2026 09:09:00 pm CDT
September 22nd, 2026 09:15:00 pm CDT
Flood Warning
Johnson, IA; Washington, IA
Flood Warning issued September 21 at 8:54PM CDT until September 22 at 4:12PM CDT by NWS Quad Cities IA IL
...The Flood Warning is extended for the following rivers in Iowa... Cedar River near Conesville affecting Louisa and Muscatine Counties. Iowa River at Oakville affecting Louisa County. Iowa River at Wapello affecting Louisa County. Iowa River near Lone Tree affecting Louisa, Washington and Johnson Counties. English River at Kalona affecting Washington and Johnson Counties. * WHAT...Moderate flooding is occurring. * WHERE...English River at Kalona. * WHEN...Until Tuesday afternoon. * IMPACTS...At 17.0 feet, Water begins going over several county roads, including 13th St, Kiwi Ave, Orange Ave and Poplar Ave. * ADDITIONAL DETAILS... - At 8:00 PM CDT Monday the stage was 16.8 feet. - Forecast...The river is expected to fall below flood stage tomorrow morning and continue falling to 6.6 feet Monday, September 28. - Flood stage is 14.0 feet.
Severe
Observed
Immediate
September 21st, 2026 08:54:00 pm CDT
September 21st, 2026 08:54:00 pm CDT
September 22nd, 2026 04:15:00 pm CDT
Flood Warning
Johnson, IA; Louisa, IA; Washington, IA
Flood Warning issued September 21 at 8:54PM CDT until September 23 at 3:00PM CDT by NWS Quad Cities IA IL
...The Flood Warning is extended for the following rivers in Iowa... Cedar River near Conesville affecting Louisa and Muscatine Counties. Iowa River at Oakville affecting Louisa County. Iowa River at Wapello affecting Louisa County. Iowa River near Lone Tree affecting Louisa, Washington and Johnson Counties. English River at Kalona affecting Washington and Johnson Counties. * WHAT...Minor flooding is forecast. * WHERE...Iowa River near Lone Tree. * WHEN...Until Wednesday afternoon. * IMPACTS...At 18.0 feet, Sand Road closes south of 520th Street to the Highway 22 intersection. * ADDITIONAL DETAILS... - At 8:00 PM CDT Monday the stage was 16.0 feet. - Forecast...The river is expected to rise to a crest of 17.5 feet early tomorrow afternoon. It will then fall below flood stage Wednesday morning. - Flood stage is 16.0 feet.
Severe
Observed
Immediate
September 21st, 2026 08:54:00 pm CDT
September 21st, 2026 08:54:00 pm CDT
September 22nd, 2026 09:00:00 pm CDT
Flood Warning
Louisa, IA; Muscatine, IA
Flood Warning issued September 21 at 8:54PM CDT until September 24 at 9:00AM CDT by NWS Quad Cities IA IL
...The Flood Warning is extended for the following rivers in Iowa... Cedar River near Conesville affecting Louisa and Muscatine Counties. Iowa River at Oakville affecting Louisa County. Iowa River at Wapello affecting Louisa County. Iowa River near Lone Tree affecting Louisa, Washington and Johnson Counties. English River at Kalona affecting Washington and Johnson Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Cedar River near Conesville. * WHEN...Until Thursday morning. * IMPACTS...At 14.5 feet, Water affects residences along Iowa Highway 22. Water affects Hoot Owl Jct and Elder Avenue south of Iowa Highway 22. * ADDITIONAL DETAILS... - At 8:00 PM CDT Monday the stage was 14.6 feet. - Forecast...The river is expected to rise to a crest of 14.7 feet just after midnight tonight. It will then fall below flood stage early Thursday morning. - Flood stage is 13.0 feet.
Severe
Observed
Immediate
September 21st, 2026 08:54:00 pm CDT
September 21st, 2026 08:54:00 pm CDT
September 22nd, 2026 09:00:00 pm CDT
Flood Warning
Louisa, IA
Flood Warning issued September 21 at 8:54PM CDT until September 25 at 11:00AM CDT by NWS Quad Cities IA IL
...The Flood Warning is extended for the following rivers in Iowa... Cedar River near Conesville affecting Louisa and Muscatine Counties. Iowa River at Oakville affecting Louisa County. Iowa River at Wapello affecting Louisa County. Iowa River near Lone Tree affecting Louisa, Washington and Johnson Counties. English River at Kalona affecting Washington and Johnson Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Iowa River at Oakville. * WHEN...Until Friday morning. * IMPACTS...At 12.0 feet, Flooding of agricultural land is ongoing. Several county roads are under water and closed. * ADDITIONAL DETAILS... - At 8:00 PM CDT Monday the stage was 11.3 feet. - Forecast...The river is expected to rise to a crest of 13.2 feet Wednesday morning. It will then fall below flood stage early Friday morning. - Flood stage is 11.0 feet.
Severe
Observed
Immediate
September 21st, 2026 08:54:00 pm CDT
September 21st, 2026 08:54:00 pm CDT
September 22nd, 2026 09:00:00 pm CDT
Flood Warning
Louisa, IA
Flood Warning issued September 21 at 8:54PM CDT until September 25 at 1:00PM CDT by NWS Quad Cities IA IL
...The Flood Warning is extended for the following rivers in Iowa... Cedar River near Conesville affecting Louisa and Muscatine Counties. Iowa River at Oakville affecting Louisa County. Iowa River at Wapello affecting Louisa County. Iowa River near Lone Tree affecting Louisa, Washington and Johnson Counties. English River at Kalona affecting Washington and Johnson Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Iowa River at Wapello. * WHEN...Until Friday afternoon. * IMPACTS...At 25.0 feet, Widespread flooding of agricultural land. Numerous secondary roads are under water. * ADDITIONAL DETAILS... - At 8:00 PM CDT Monday the stage was 22.3 feet. - Forecast...The river is expected to rise to a crest of 23.8 feet Wednesday morning. It will then fall below flood stage early Friday morning. - Flood stage is 21.0 feet.
Severe
Observed
Immediate
September 21st, 2026 08:54:00 pm CDT
September 21st, 2026 08:54:00 pm CDT
September 22nd, 2026 09:00:00 pm CDT
Flood Warning
Keokuk, IA
Flood Warning issued September 21 at 8:35PM CDT until September 22 at 4:00PM CDT by NWS Quad Cities IA IL
...The Flood Warning is extended for the following rivers in Iowa... Wapsipinicon River near De Witt 4S affecting Clinton and Scott Counties. ...The Flood Warning continues for the following rivers in Iowa... North Skunk River near Sigourney affecting Keokuk County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...North Skunk River near Sigourney. * WHEN...Until Tuesday afternoon. * IMPACTS...At 16.0 feet, Water affects agricultural land, some county roads, and farm houses. * ADDITIONAL DETAILS... - At 7:30 PM CDT Monday the stage was 17.0 feet. - Forecast...The river is expected to fall below flood stage tomorrow morning and continue falling to 7.0 feet Monday, September 28. - Flood stage is 16.0 feet.
Severe
Observed
Immediate
September 21st, 2026 08:35:00 pm CDT
September 21st, 2026 08:35:00 pm CDT
September 22nd, 2026 04:00:00 pm CDT
Flood Warning
Clinton, IA; Scott, IA
Flood Warning issued September 21 at 8:35PM CDT by NWS Quad Cities IA IL
...The Flood Warning is extended for the following rivers in Iowa... Wapsipinicon River near De Witt 4S affecting Clinton and Scott Counties. ...The Flood Warning continues for the following rivers in Iowa... North Skunk River near Sigourney affecting Keokuk County. * WHAT...Major flooding is occurring and major flooding is forecast. * WHERE...Wapsipinicon River near De Witt 4S. * WHEN...Until further notice. * IMPACTS...At 13.0 feet, Water affects many residences along the river. * ADDITIONAL DETAILS... - At 7:30 PM CDT Monday the stage was 12.6 feet. - Forecast...The river is expected to rise to a crest of 13.0 feet Wednesday evening. - Flood stage is 11.0 feet.
Severe
Observed
Immediate
September 21st, 2026 08:35:00 pm CDT
September 21st, 2026 08:35:00 pm CDT
September 22nd, 2026 08:45:00 pm CDT
SAFETY and DATA MESSAGE
When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.
Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Shellsburg.
Use the Radar Maps link provided to understand the trajectory of a storm.
For more official information about severe storms and how to stay safe, visit the National Weather Service's Severe Thunderstorm Safety page. We encourage you to also monitor Excessive Rainfall Forecasts on their Weather Prediction Center website.