Illinois, Indiana Dense Fog Advisory | Effective 04/16/2026 19:41
Public safety alert, emergency alert, and weather alert
Description:
* WHAT...Visibility one quarter mile or less in dense fog expected.
* WHERE...In Illinois, Northern Cook County. In Indiana, Porter
County.
* WHEN...Until 10 AM CDT Friday.
* IMPACTS...Low visibility could make driving conditions hazardous.
Instruction:
If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.