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 Minor Frost Advisory | Effective 10/16/2026 07:23

Frost Advisory issued October 16 at 9:23AM CDT until October 17 at 8:00AM CDT by NWS Chicago IL

Event: Frost Advisory

Desc: * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...La Salle and Kendall Counties. * WHEN...From 5 AM to 8 AM CDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Areas: LaSalle County IL, Kendall County IL

Severity: Minor

Urgency: Expected

Effective: Friday, October 16, 2026 - 07:23

Expires: Friday, October 16, 2026 - 17:30

Sender: w-nws.webmaster@noaa.gov

Illinois Minor Frost Advisory | Effective 10/16/2026 07:23

Frost Advisory issued October 16 at 9:23AM CDT until October 17 at 8:00AM CDT by NWS Chicago IL

Event: Frost Advisory

Desc: * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Lake IL County. * WHEN...From 5 AM to 8 AM CDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Areas: Lake County IL

Severity: Minor

Urgency: Expected

Effective: Friday, October 16, 2026 - 07:23

Expires: Friday, October 16, 2026 - 17:30

Sender: w-nws.webmaster@noaa.gov

Iowa, Illinois, Missouri Minor Frost Advisory | Effective 10/16/2026 04:12

Frost Advisory issued October 16 at 6:12AM CDT until October 17 at 9:00AM CDT by NWS Quad Cities IA IL

Event: Frost Advisory

Desc: * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of north central, northwest, and west central Illinois, southeast Iowa, and northeast Missouri. * WHEN...From 1 AM to 9 AM CDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left...

Areas: Louisa County IA, Henry County IA, Des Moines County IA, Van Buren County IA, Lee County IA, Henry County IL, Bureau County IL, Putnam County IL, Mercer County IL, Henderson County IL, Warren County IL, Hancock County IL, McDonough County IL, Scotland County MO, Clark County MO

Severity: Minor

Urgency: Expected

Effective: Friday, October 16, 2026 - 04:12

Expires: Friday, October 16, 2026 - 14:00

Sender: w-nws.webmaster@noaa.gov

Illinois, Missouri Minor Frost Advisory | Effective 10/16/2026 00:04

Frost Advisory issued October 16 at 2:04AM CDT until October 17 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, southwest, and west central Illinois and central, east central, and northeast Missouri. * WHEN...From 1 AM to 9 AM CDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be...

Areas: Greene County IL, Macoupin County IL, Montgomery County IL, Adams County IL, Brown County IL, Pike County IL, Calhoun County IL, Jersey County IL, Knox County MO, Lewis County MO, Shelby County MO, Marion County MO, Monroe County MO, Ralls County MO, Pike County MO, Audrain County MO, Lincoln County MO

Severity: Minor

Urgency: Expected

Effective: Friday, October 16, 2026 - 00:04

Expires: Friday, October 16, 2026 - 15:15

Sender: w-nws.webmaster@noaa.gov

Illinois Minor Frost Advisory | Effective 10/15/2026 23:28

Frost Advisory issued October 16 at 1:28AM CDT until October 17 at 8:00AM CDT by NWS Chicago IL

Event: Frost Advisory

Areas: LaSalle County IL, Kendall County IL

Severity: Minor

Urgency: Expected

Effective: Thursday, October 15, 2026 - 23:28

Expires: Friday, October 16, 2026 - 09:30

Sender: w-nws.webmaster@noaa.gov

Illinois Minor Frost Advisory | Effective 10/15/2026 23:28

Frost Advisory issued October 16 at 1:28AM CDT until October 17 at 8:00AM CDT by NWS Chicago IL

Event: Frost Advisory

Areas: Lake County IL

Severity: Minor

Urgency: Expected

Effective: Thursday, October 15, 2026 - 23:28

Expires: Friday, October 16, 2026 - 09:30

Sender: w-nws.webmaster@noaa.gov

Illinois Minor Frost Advisory | Effective 10/15/2026 23:19

Frost Advisory issued October 16 at 1:19AM CDT until October 17 at 9:00AM CDT by NWS Lincoln IL

Event: Frost Advisory

Desc: * WHAT...Clear skies and light winds will allow temperatures to drop to between 33 and 35 degrees tonight. This will result in frost formation. * WHERE...Portions of central and west central Illinois. * WHEN...From 1 AM to 9 AM CDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may...

Areas: Knox County IL, Stark County IL, Peoria County IL, Marshall County IL, Woodford County IL, Fulton County IL, Tazewell County IL, Schuyler County IL, Mason County IL, Logan County IL, Cass County IL, Menard County IL, Scott County IL, Morgan County IL, Sangamon County IL, Christian County IL

Severity: Minor

Urgency: Expected

Effective: Thursday, October 15, 2026 - 23:19

Expires: Friday, October 16, 2026 - 13:15

Sender: w-nws.webmaster@noaa.gov

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Public Safety Alerts