Lake County, IL

Alerts

Advisory Area
County Line

Alerts are listed in order of start time and level of severity. Click on the alert title to read details for each alert.

In effect from Monday 09/14 9:22 PM CDT – Tuesday 09/15 7:00 AM CDT

Issued by NWS Chicago IL

What

High wave action and dangerous currents expected at Lake Michigan beaches. Waves 5 to 8 feet expected.

Where

Lake IL and Northern Cook Counties.

When

Until 7 AM CDT Tuesday.

Impacts

Swimming conditions will be life threatening, especially for inexperienced swimmers.

What to Do

Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures.


Areas Impacted

  • Lake
  • Northern Cook

Tips to Stay Safe

Your area may see dangerous swimming conditions. Use caution: 

  • Stay off of rocks and jetties due to dangerous conditions
  • Stay out of the water to avoid hazardous swimming conditions, and stay near occupied lifeguard towers 
  • Keep small children in sight and within arm’s reach at all times.

Briefings

No recent briefing available

From the Forecaster

Weather Outlook

Created by the NWS Chicago WFO

A wet and stormy pattern is ahead for the week. The good news is that there will be breaks in the rain, but periods of showers and storms will continue through the weekend. Wednesday is looking particularly wet with the potential localized torrential downpours.

This is a multiday forecast graphic for northern Illinois and northwest Indiana.  Headline: Five Day Outlook.  Sub Headline: Periodic shower and storm threat through the weekend, but there will be dry times. Visit weather.gov/Chicago for more forecast details for your location.    Graphic Created: Monday, September 14, 2026 1:34 PM CDT

Seven-day Weather Risk Overview

The graphic shows the daily risk summary for 7 days. Daily risk is based on highest risk factor for that day.

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