Clear Lake, IA Warnings, Watches and Advisories

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 Clear Lake.

Use the Radar Maps link provided to understand the trajectory of a storm.

Severe Thunderstorm Warning issued July 20 at 1:38AM CDT until July 20 at 1:45AM CDT by NWS Sioux Falls SD

The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning will be allowed to expire. However, heavy rain is still possible with this thunderstorm.

Special Weather Statement issued July 20 at 1:37AM CDT by NWS Quad Cities IA IL

At 137 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from 10 miles northeast of Bloomfield to Queen City. Movement was east at 35 mph. HAZARD...Winds in excess of 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could cause minor tree limb damage and blow around unsecured objects. Locations impacted include... Memphis, Keosauqua, Birmingham, Milton, Bonaparte, Stockport, Wyaconda, Cantril, Hillsboro, Rutledge, South Gorin, Granger, Douds, Bentonsport/Vernon, Leando, Crawford, Arbela, Mount Sterling, Hitt, and Glasgow.

Special Weather Statement issued July 20 at 1:19AM CDT by NWS Quad Cities IA IL

At 119 AM CDT, Doppler radar was tracking a slow-moving thunderstorm near Millersburg, or 12 miles southwest of Marengo, moving east at 15 mph. HAZARD...Winds in excess of 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could cause minor tree limb damage and blow around unsecured objects. Locations impacted include... Williamsburg, North English, Victor, Parnell, Millersburg, Kinross, Genoa Bluff, Holbrook, and Lake Iowa Park. This includes Interstate 80 in Iowa between mile markers 205 and 231.

Flood Watch issued July 19 at 9:32PM CDT until July 20 at 10:00AM CDT by NWS Des Moines IA

Thunderstorms are expected across the area tonight with the potential to produce heavy to very heavy rainfall. * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central into southern Iowa, including the following counties, in central Iowa, Boone, Dallas, Grundy, Hamilton, Hardin, Jasper, Marshall, Polk, Poweshiek, Story, Tama and Webster. In northeast Iowa, Black Hawk. In south central Iowa, Clarke, Lucas, Madison, Mahaska, Marion, Monroe and Warren. In southeast Iowa, Davis and Wapello. In southwest Iowa, Adair and Cass. In west central Iowa, Audubon, Calhoun, Carroll, Crawford, Greene, Guthrie and Sac. * WHEN...Through Sunday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Significant ponding may also occur. * ADDITIONAL DETAILS... - Thunderstorms producing heavy to very heavy rainfall are possible tonight. Intense rainfall rates are likely with any storms having the potential to produce 1 to 2 inches of rainfall over a short time period. Total rainfall amounts of 2 to 5 inches may occur in some areas with the potential to exceed 5 inches in a few areas.

Flood Watch issued July 19 at 8:35PM CDT until July 23 at 6:30AM CDT by NWS Quad Cities IA IL

...The Flood Watch continues for the following rivers in Iowa... English River at Kalona affecting Johnson and Washington Counties. North Skunk River near Sigourney affecting Keokuk County. * WHAT...Flooding is possible. * WHERE...English River at Kalona. * WHEN...From Sunday evening to Wednesday morning. * IMPACTS...At 16.0 feet, Water begins approaching several county roads. Agricultural land near the river is flooding. * ADDITIONAL DETAILS... - At 8:00 PM CDT Saturday the stage was 7.4 feet and rising. - Forecast...Flood stage may be reached late tomorrow evening. - Flood stage is 14.0 feet.

Flood Watch issued July 19 at 8:35PM CDT until July 24 at 12:20AM CDT by NWS Quad Cities IA IL

...The Flood Watch continues for the following rivers in Iowa... English River at Kalona affecting Johnson and Washington Counties. North Skunk River near Sigourney affecting Keokuk County. * WHAT...Flooding is possible. * WHERE...North Skunk River near Sigourney. * WHEN...From Monday morning to early Thursday morning. * IMPACTS...At 18.0 feet, Water affects most agricultural land near Sigourney. * ADDITIONAL DETAILS... - At 8:00 PM CDT Saturday the stage was estimated at 7.8 feet and rising. - Forecast...Flood stage may be reached late Monday morning. - Flood stage is 16.0 feet.

Flood Watch issued July 19 at 8:26PM CDT until July 20 at 1:00PM CDT by NWS Quad Cities IA IL

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Illinois, including the following areas, Hancock, Henderson, Henry IL, McDonough, Mercer, Rock Island and Warren, Iowa, including the following areas, Benton, Cedar, Clinton, Des Moines, Henry IA, Iowa, Jefferson, Johnson, Jones, Keokuk, Lee, Linn, Louisa, Muscatine, Scott, Van Buren and Washington, and northeast Missouri, including the following areas, Clark and Scotland. * WHEN...Through Sunday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Extensive street flooding and flooding of creeks and rivers are possible. * ADDITIONAL DETAILS... - Thunderstorms are expected across the watch area tonight into Sunday morning. Very high rainfall rates of 2 inches or greater in a short time are possible, which could lead to flash flooding particularly in urban areas. In addition, with the potential for repeated rounds of storms, some locations could receive 2 to 4 inches of rain with locally higher amounts possible. With saturated soils from previous rainfall, these rainfall rates and rainfall amounts will lead to an increased risk for flash flooding.

Flood Warning issued July 19 at 8:19PM CDT by NWS Quad Cities IA IL

...The Flood Warning is extended for the following rivers in Iowa... Iowa River at Marengo affecting Iowa and Benton Counties. * WHAT...Minor flooding is forecast. * WHERE...Iowa River at Marengo. * WHEN...From late tonight until further notice. * IMPACTS...At 17.0 feet, Moderate Flood Stage. Extensive inundation of agricultural land. * ADDITIONAL DETAILS... - At 8:00 PM CDT Saturday the stage was 13.5 feet and rising. - Forecast...The river is expected to rise above flood stage late tonight and continue rising to a crest of 16.8 feet Tuesday morning. - Flood stage is 15.0 feet.