Public Safety Alerts

See official public safety alerts, emergency alerts, presidential alerts and weather warnings for every U.S. location.
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Public Safety Alerts

Illinois, Missouri Minor Frost Advisory | Effective 10/17/2026 11:50

Frost Advisory issued October 17 at 1:50PM CDT until October 18 at 9:00AM CDT by NWS St Louis MO

Event: Frost Advisory

Desc: * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Portions of south central and southwest Illinois and east central and southeast Missouri. * WHEN...From 1 AM to 9 AM CDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Areas: Montgomery County IL, Bond County IL, Fayette County IL, Clinton County IL, Marion County IL, Washington County IL, Randolph County IL, Madison County IL, St. Clair County IL, Monroe County IL, Franklin County MO, Jefferson County MO, Crawford County MO, Washington County MO, St. Francois County MO, Ste. Genevieve County MO, Iron County MO, Madison County MO, Reynolds County MO

Severity: Minor

Urgency: Expected

Effective: Saturday, October 17, 2026 - 11:50

Expires: Sunday, October 18, 2026 - 03:00

Sender: w-nws.webmaster@noaa.gov

Illinois, Indiana Minor Frost Advisory | Effective 10/17/2026 11:24

Frost Advisory issued October 17 at 1:24PM CDT until October 18 at 8:00AM CDT by NWS Chicago IL

Event: Frost Advisory

Desc: * WHAT...Low temperatures in the low to mid 30s will result in frost formation. * WHERE...In Illinois, Livingston, Ford, Iroquois, Eastern Will, and Kankakee Counties. In Indiana, Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 3 AM CDT /4 AM EDT/ to 8 AM CDT /9 AM EDT/ Sunday. * IMPACTS...Frost could harm...

Areas: Kankakee County IL, Livingston County IL, Iroquois County IL, Ford County IL, Will County IL, Lake County IN, Porter County IN, Newton County IN, Jasper County IN, Benton County IN

Severity: Minor

Urgency: Expected

Effective: Saturday, October 17, 2026 - 11:24

Expires: Saturday, October 17, 2026 - 21:30

Sender: w-nws.webmaster@noaa.gov

Illinois, Indiana, Kentucky, Missouri Minor Frost Advisory | Effective 10/17/2026 11:13

Frost Advisory issued October 17 at 1:13PM CDT until October 18 at 8:00AM CDT by NWS Paducah KY

Event: Frost Advisory

Desc: * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...All of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. * WHEN...From 1 AM CDT /2 AM EDT/ to 8 AM CDT /9 AM EDT/ Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if...

Areas: Jefferson County IL, Wayne County IL, Edwards County IL, Wabash County IL, Perry County IL, Franklin County IL, Hamilton County IL, White County IL, Jackson County IL, Williamson County IL, Saline County IL, Gallatin County IL, Union County IL, Johnson County IL, Pope County IL, Hardin County IL, Alexander County IL, Pulaski County IL, Massac County IL, Gibson County IN, Pike County IN, Posey County IN, Vanderburgh County IN, Warrick County IN, Spencer County IN, Fulton County KY, Hickman County KY, Carlisle County KY, Ballard County KY, McCracken County KY, Graves County KY, Livingston County KY, Marshall County KY, Calloway County KY, Crittenden County KY, Lyon County KY, Trigg County KY, Caldwell County KY, Union County KY, Webster County KY, Hopkins County KY, Christian County KY, Henderson County KY, Daviess County KY, McLean County KY, Muhlenberg County KY, Todd County KY, Perry County MO, Bollinger County MO, Cape Girardeau County MO, Wayne County MO, Carter County MO, Ripley County MO, Butler County MO, Stoddard County MO, Scott County MO, Mississippi County MO, New Madrid County MO

Severity: Minor

Urgency: Expected

Effective: Saturday, October 17, 2026 - 11:13

Expires: Sunday, October 18, 2026 - 06:00

Sender: w-nws.webmaster@noaa.gov

Illinois, Missouri Minor Frost Advisory | Effective 10/17/2026 07:02

Frost Advisory issued October 17 at 9:02AM CDT until October 18 at 9:00AM CDT by NWS St Louis MO

Event: Frost Advisory

Desc: * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of south central and southwest Illinois and east central and southeast Missouri. * WHEN...From 1 AM to 9 AM CDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Areas: Bond County IL, Fayette County IL, Clinton County IL, Marion County IL, Washington County IL, Randolph County IL, Madison County IL, St. Clair County IL, Monroe County IL, Franklin County MO, Jefferson County MO, Crawford County MO, Washington County MO, St. Francois County MO, Ste. Genevieve County MO, Iron County MO, Madison County MO, Reynolds County MO

Severity: Minor

Urgency: Expected

Effective: Saturday, October 17, 2026 - 07:02

Expires: Saturday, October 17, 2026 - 22:15

Sender: w-nws.webmaster@noaa.gov

Illinois Minor Frost Advisory | Effective 10/17/2026 07:02

Frost Advisory issued October 17 at 9:02AM CDT until October 18 at 9:00AM CDT by NWS St Louis MO

Event: Frost Advisory

Desc: * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Montgomery IL County. * WHEN...From 1 AM to 9 AM CDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Areas: Montgomery County IL

Severity: Minor

Urgency: Expected

Effective: Saturday, October 17, 2026 - 07:02

Expires: Saturday, October 17, 2026 - 22:15

Sender: w-nws.webmaster@noaa.gov

Illinois Minor Frost Advisory | Effective 10/17/2026 06:41

Frost Advisory issued October 17 at 8:41AM CDT until October 18 at 9:00AM CDT by NWS Lincoln IL

Event: Frost Advisory

Desc: * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...A portion of central Illinois. * WHEN...From 1 AM to 9 AM CDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Areas: Christian County IL

Severity: Minor

Urgency: Expected

Effective: Saturday, October 17, 2026 - 06:41

Expires: Saturday, October 17, 2026 - 18:00

Sender: w-nws.webmaster@noaa.gov

Illinois Minor Frost Advisory | Effective 10/17/2026 06:41

Frost Advisory issued October 17 at 8:41AM CDT until October 18 at 9:00AM CDT by NWS Lincoln IL

Event: Frost Advisory

Desc: * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of central, east central, and southeast Illinois. * WHEN...From 1 AM to 9 AM CDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Areas: McLean County IL, De Witt County IL, Piatt County IL, Champaign County IL, Vermilion County IL, Macon County IL, Moultrie County IL, Douglas County IL, Coles County IL, Edgar County IL, Shelby County IL, Cumberland County IL, Clark County IL, Effingham County IL, Jasper County IL, Crawford County IL, Clay County IL, Richland County IL, Lawrence County IL

Severity: Minor

Urgency: Expected

Effective: Saturday, October 17, 2026 - 06:41

Expires: Saturday, October 17, 2026 - 18:00

Sender: w-nws.webmaster@noaa.gov

Illinois Minor Frost Advisory | Effective 10/17/2026 06:41

Frost Advisory issued October 17 at 8:41AM CDT until October 17 at 9:00AM CDT by NWS Lincoln IL

Event: Frost Advisory

Areas: Christian County IL

Severity: Minor

Urgency: Expected

Effective: Saturday, October 17, 2026 - 06:41

Expires: Saturday, October 17, 2026 - 18:00

Sender: w-nws.webmaster@noaa.gov

Illinois, Indiana Minor Frost Advisory | Effective 10/17/2026 05:56

Frost Advisory issued October 17 at 7:56AM CDT until October 18 at 8:00AM CDT by NWS Chicago IL

Event: Frost Advisory

Areas: Kankakee County IL, Livingston County IL, Iroquois County IL, Ford County IL, Will County IL, Lake County IN, Porter County IN, Newton County IN, Jasper County IN, Benton County IN

Severity: Minor

Urgency: Expected

Effective: Saturday, October 17, 2026 - 05:56

Expires: Saturday, October 17, 2026 - 16:00

Sender: w-nws.webmaster@noaa.gov

Illinois Minor Frost Advisory | Effective 10/16/2026 23:54

Frost Advisory issued October 17 at 1:54AM CDT until October 17 at 9:00AM CDT by NWS St Louis MO

Event: Frost Advisory

Desc: * WHAT...For the first Frost Advisory, temperatures as low as 34 will result in frost formation. For the second Frost Advisory, temperatures as low as 33 will result in frost formation. * WHERE...Montgomery IL County. * WHEN...For the first Frost Advisory, until 9 AM CDT this morning. For the second Frost Advisory, from 1 AM to...

Areas: Montgomery County IL

Severity: Minor

Urgency: Expected

Effective: Friday, October 16, 2026 - 23:54

Expires: Saturday, October 17, 2026 - 15:00

Sender: w-nws.webmaster@noaa.gov

Illinois Minor Frost Advisory | Effective 10/16/2026 23:54

Frost Advisory issued October 17 at 1:54AM CDT until October 18 at 9:00AM CDT by NWS St Louis MO

Event: Frost Advisory

Areas: Montgomery County IL

Severity: Minor

Urgency: Expected

Effective: Friday, October 16, 2026 - 23:54

Expires: Saturday, October 17, 2026 - 15:00

Sender: w-nws.webmaster@noaa.gov

Illinois, Missouri Minor Frost Advisory | Effective 10/16/2026 23:54

Frost Advisory issued October 17 at 1:54AM CDT until October 18 at 9:00AM CDT by NWS St Louis MO

Event: Frost Advisory

Severity: Minor

Urgency: Expected

Effective: Friday, October 16, 2026 - 23:54

Expires: Saturday, October 17, 2026 - 15:00

Sender: w-nws.webmaster@noaa.gov

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Public Safety Alerts