Severe

Significant threat to life or property

Missouri Flood Warning | Effective 04/18/2026 12:59

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> ...Forecast flooding changed from Minor to Moderate severity and<br /> increased in duration for the following rivers in Missouri... Petite Saline Creek near Boonville affecting Cooper County. * WHAT...Minor flooding is occurring and moderate flooding is<br /> forecast. * WHERE...Petite Saline Creek near Boonville. * WHEN...Until tomorrow evening. * IMPACTS...At 16.0 feet, Low lying woodlands and fields near the<br /> creek flood.<br />

Colorado Freeze Watch | Effective 04/18/2026 12:15

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...For the Freeze Warning, sub-freezing temperatures in the<br /> low to mid 20s. For the Freeze Watch, sub-freezing temperatures<br /> possible. * WHERE...Central Yampa River Basin and Central Colorado River Basin. * WHEN...For the Freeze Warning, from 10 PM this evening to 9 AM MDT<br /> Sunday. For the Freeze Watch, from Sunday evening through Monday<br /> morning. * IMPACTS...Frost and freeze conditions could kill crops, other<br />

Illinois Flood Warning | Effective 04/18/2026 12:20

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northeast Illinois, including the following<br /> counties, Lake IL and McHenry. * WHEN...Until 100 PM CDT Saturday Apr 25. * IMPACTS...Numerous roads, yards, structures, and park land are<br /> expected to flood along the Fox River Chain of Lakes. * ADDITIONAL DETAILS...<br /> - At 145 PM CDT, River gauges along the Fox River Chain of<br />

Illinois Flood Watch | Effective 04/18/2026 11:45

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> ...The National Weather Service in Chicago IL has issued a Flood<br /> Watch for the following rivers in Illinois... Rock River at Dixon affecting Lee and Ogle Counties. For the Rock River...including Dixon...flooding is possible. * WHAT...Flooding is possible. * WHERE...Rock River from Castle Rock State Park near Oregon<br /> downstream to Lee County line, including the Dixon gauge. * WHEN...From late Sunday night until further notice.

Illinois Freeze Watch | Effective 04/18/2026 11:48

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...For the Frost Advisory, temperatures as low as 34 will<br /> result in frost formation. For the Freeze Watch, sub-freezing<br /> temperatures as low as 30 possible. * WHERE...Portions of central, east central, and west central<br /> Illinois. * WHEN...For the Frost Advisory, from 1 AM to 8 AM CDT Sunday. For<br /> the Freeze Watch, from late Sunday night through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other<br />

Indiana, Ohio Freeze Watch | Effective 04/18/2026 11:54

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Sub-freezing temperatures as low as 30 possible. * WHERE...Portions of east central Indiana and central and west<br /> central Ohio. * WHEN...From late Sunday night through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other<br /> sensitive vegetation and possibly damage unprotected outdoor<br /> plumbing. Instruction:<br /> Be prepared to take steps to protect tender plants from the cold.

Oklahoma Flood Warning | Effective 04/18/2026 11:58

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> ...The Flood Warning continues for the following rivers in<br /> Oklahoma... Neosho River near Commerce affecting Ottawa County. ...The Flood Warning is cancelled for the following rivers in<br /> Oklahoma... Spring River near Quapaw affecting Ottawa County. * WHAT...Moderate flooding is forecast. * WHERE...Neosho River near Commerce. * WHEN...Until early Tuesday afternoon. * IMPACTS...At 18.0 feet, moderate agricultural flooding occurs with<br />

Illinois, Indiana Freeze Watch | Effective 04/18/2026 11:29

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...For the Frost Advisory, temperatures as low as 33 will<br /> result in frost formation. For the Freeze Watch, sub-freezing<br /> temperatures as low as 28 possible. * WHERE...Portions of central, east central, north central, and<br /> northeast Illinois and northwest Indiana. * WHEN...For the Frost Advisory, from midnight CDT /1 AM EDT/<br /> tonight to 9 AM CDT /10 AM EDT/ Sunday. For the Freeze Watch, from<br /> late Sunday night through Monday morning.

Illinois Freeze Watch | Effective 04/18/2026 11:29

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Sub-freezing temperatures as low as 30 possible. * WHERE...Northern Cook and Southern Cook Counties. * WHEN...From late Sunday night through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other<br /> sensitive vegetation and possibly damage unprotected outdoor<br /> plumbing. Instruction:<br /> Take steps now to protect tender plants from the cold.

Indiana Freeze Watch | Effective 04/18/2026 11:32

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...For the Frost Advisory, temperatures as low as 34 will<br /> result in frost formation. For the Freeze Watch, sub-freezing<br /> temperatures as low as 30 possible. * WHERE...Portions of central, east central, north central, and west<br /> central Indiana. * WHEN...For the Frost Advisory, from 2 AM to 9 AM EDT Sunday. For<br /> the Freeze Watch, from late Sunday night through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other<br />
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