Jefferson County Emergency Management Agency - JCEMA

Jefferson County Emergency Management Agency - JCEMA The primary responsibility of the Jefferson County Emergency Management Agency (JCEMA) is to better

05/26/2026

I-57 Road Closure

The Illinois Department of Transportation announced today that Interstate 57 will be closed overnight June 1 through June 3 to allow crews to set structural steel for the new Illinois 15 overpass.
To minimize impacts on traffic, the closures will take place nightly from 7 p.m. to 7 a.m.
During the work, traffic on I-57 will be detoured around the work zone using the entrance and exit ramps at the Mt. Vernon Interchange.
Flaggers will be present throughout the nighttime operations to assist with traffic movement and maintain safety for motorists and construction crews.

๐‚๐ข๐ญ๐ฒ ๐จ๐Ÿ ๐Œ๐ญ. ๐•๐ž๐ซ๐ง๐จ๐ง ๐Ž๐ฎ๐ญ๐๐จ๐จ๐ซ ๐–๐š๐ซ๐ง๐ข๐ง๐  ๐’๐ข๐ซ๐ž๐ง๐ฌ & ๐„๐ฆ๐ž๐ซ๐ ๐ž๐ง๐œ๐ฒ ๐Œ๐ž๐ฌ๐ฌ๐š๐ ๐ž๐ฌThe Cityโ€™s outdoor warning system may broadcast alerts and...
05/20/2026

๐‚๐ข๐ญ๐ฒ ๐จ๐Ÿ ๐Œ๐ญ. ๐•๐ž๐ซ๐ง๐จ๐ง ๐Ž๐ฎ๐ญ๐๐จ๐จ๐ซ ๐–๐š๐ซ๐ง๐ข๐ง๐  ๐’๐ข๐ซ๐ž๐ง๐ฌ & ๐„๐ฆ๐ž๐ซ๐ ๐ž๐ง๐œ๐ฒ ๐Œ๐ž๐ฌ๐ฌ๐š๐ ๐ž๐ฌ
The Cityโ€™s outdoor warning system may broadcast alerts and announcements during severe weather events and emergency situations. Residents are encouraged to become familiar with these messages and understand the actions that may be needed when they are heard.

Outdoor warning sirens are designed primarily to alert people who are outdoors. Residents should not rely solely on sirens for emergency notifications and are encouraged to use additional sources such as Nixle alerts, weather radios, local media, and trusted weather apps.

๐‡๐จ๐ฐ ๐ญ๐ก๐ž ๐Ž๐ฎ๐ญ๐๐จ๐จ๐ซ ๐–๐š๐ซ๐ง๐ข๐ง๐  ๐’๐ข๐ซ๐ž๐ง ๐’๐ฒ๐ฌ๐ญ๐ž๐ฆ ๐Ž๐ฉ๐ž๐ซ๐š๐ญ๐ž๐ฌ
The City of Mt. Vernonโ€™s outdoor warning siren system may broadcast both siren tones and voice announcements during severe weather and emergency situations.

Only the two park sirens are used for lightning detection announcements during park hours. When lightning is detected nearby, these sirens broadcast a voice announcement warning individuals in the parks to seek shelter.

The lightning announcement feature was originally activated on all city sirens. Following resident feedback about frequent activations during regular storms, the feature was removed from all other sirens and remains active only at the parks.

The park sirens themselves and their volume levels have not changed. The only addition was the lightning voice announcement feature.

During Tornado Warnings and Severe Thunderstorm Warnings that include winds at or above 70 MPH, all outdoor warning sirens throughout the city will sound and provide a voice announcement identifying the warning.

All severe weather siren activations are automatically triggered through the National Weather Service.

๐‹๐ข๐ฌ๐ญ๐ž๐ง ๐ญ๐จ ๐š ๐ญ๐ž๐ฌ๐ญ ๐š๐ง๐ง๐จ๐ฎ๐ง๐œ๐ž๐ฆ๐ž๐ง๐ญ: https://www.mtvernon.com/media/4jrjsg5e/dv1-test-announcement.wav

This announcement is used during scheduled siren testing to confirm the outdoor warning system is functioning properly. Outdoor warning sirens are typically tested on the first Tuesday of each month, weather permitting.

๐’๐ž๐ฏ๐ž๐ซ๐ž ๐“๐ก๐ฎ๐ง๐๐ž๐ซ๐ฌ๐ญ๐จ๐ซ๐ฆ ๐–๐š๐ซ๐ง๐ข๐ง๐  ๐Œ๐ž๐ฌ๐ฌ๐š๐ ๐ž
Listen to Severe Thunderstorm Warning: https://www.mtvernon.com/media/dhbffxy2/dv3-thunderstorm-warning-message.wav

This message may be broadcast during severe thunderstorms capable of producing damaging winds, dangerous lightning, hail, or other hazardous weather conditions. Residents should seek shelter indoors and continue monitoring trusted weather sources for updates.

๐‹๐ข๐ ๐ก๐ญ๐ง๐ข๐ง๐  ๐’๐š๐Ÿ๐ž๐ญ๐ฒ ๐Œ๐ž๐ฌ๐ฌ๐š๐ ๐ž
Listen to Lightning Safety Message: https://www.mtvernon.com/media/4oxlcgpe/dv4-lightning-message.wav

This message may be used when dangerous lightning conditions are present. When thunder roars, go indoors and avoid open areas, tall objects, and metal structures.

๐“๐จ๐ซ๐ง๐š๐๐จ ๐–๐š๐ซ๐ง๐ข๐ง๐  ๐Œ๐ž๐ฌ๐ฌ๐š๐ ๐ž
Listen to Tornado Warning: https://www.mtvernon.com/media/ue4d4mqa/dv2-tornado-warning-message.wav

This warning message may be broadcast when a tornado warning has been issued for the area. Residents should take shelter immediately and continue monitoring trusted weather sources for updates.

05/18/2026

Annual Run For The Wall Returning to Mt. Vernon

Riders honoring veterans and POW/MIA service members will pass through Mt. Vernon on Tuesday morning. The City of Mt. Vernon & Jefferson County are proud to welcome participants in the annual Run For The Wall motorcycle ride as they travel through the community on Tuesday, May 19. Run For The Wall is a cross-country ride honoring veterans, active military personnel, POWs, MIAs, and their families while raising awareness for those still unaccounted for from past wars and conflicts.

The riders are expected to arrive in Mt. Vernon around 10:45 a.m. and will be traveling along Route 15 to the Mt. Vernon Airport for lunch before departing around 12:45 p.m. Residents should expect increased motorcycle traffic and possible temporary delays during that time.
The community is welcome to show support for the riders as they travel through Mt. Vernon.

Learn more about Run For The Wall at: https://rftw.us/

05/16/2026

SVRPAH The National Weather Service in Paducah has issued a * Severe Thunderstorm Warning for... Southwestern Wayne County in south central Illinois... Northeastern Jefferson County in south ...

05/16/2026

SVRPAH The National Weather Service in Paducah has issued a * Severe Thunderstorm Warning for... Southwestern Jefferson County in south central Illinois... * Until 530 PM CDT. * At 458 PM ...

05/16/2026

SVRPAH The National Weather Service in Paducah has issued a * Severe Thunderstorm Warning for... Northwestern Wayne County in south central Illinois... Northeastern Jefferson County in south ...

05/16/2026

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 208 IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THIS EVENING FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 8 COUNTIES IN ...

04/28/2026

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Portions of Illinois, including the following counties, Edwards, Franklin, Hamilton, Jefferson, Perry, Wabash, Wayne and White ...

04/28/2026

THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 167 UNTIL 5 AM CDT /6 AM EDT/ TUESDAY WHICH REPLACES A PORTION OF TORNADO WATCH 162. THE NEW WATCH IS VALID FOR THE FOLLOWING AREAS IN ILLINOIS ...

04/28/2026

SVRPAH The National Weather Service in Paducah has issued a * Severe Thunderstorm Warning for... Northern Wayne County in south central Illinois... Southeastern Jefferson County in south central ...

Address

100 South Tenth Street
Mount Vernon, IL
62864

Opening Hours

Monday 9am - 1pm
Tuesday 9am - 1pm
Wednesday 9am - 1pm
Thursday 9am - 1pm

Telephone

+16182448000

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