Alert Lake County

Knowing how to prepare can ensure you and your family are safe during severe storms, flooding, extreme heat or cold, and other emergency situations. Stay alert during these situations by becoming familiar with:
Emergency Response
Over the years, Lake County has been susceptible to flooding, extreme heat and cold, thunderstorms and tornadoes, and winter storms and even earthquakes. There are differences among potential emergencies that will impact the decisions you make and the actions you take. 
Historically, minor to moderate flooding occurs annually in Lake County. Familiarize yourself with these terms to help identify the type of flooding that can impact the area you live in. 

  • Flood: A temporary overflow of water onto lands not normally covered by water and that are used or usable by people. Floods can produce measurable property damage and force the evacuation of people and vital resources.
  • Flash Flooding: Quickly rising small streams after heavy rains or rapid snow melt. The North Branch of the Chicago River watershed tends to be susceptible to flash flooding. 
  • Overflow of Storm Sewer Systems: Usually due to poor drainage, following heavy rain or rapid snowmelt.
Stay alert to flooding:

Severe Thunderstorms and Tornadoes

Severe storms that produce heavy rainfall, hail, lightning and winds are possible in Lake County, especially during the summer months. Although tornadoes are more common in the Plains States, tornadoes have touched down in Lake County as well. If there is a threat of a tornado, it's important for you to know the difference between a "Watch" and a "Warning."

Stay Alert to Severe Thunderstorms and Tornadoes:

Winter Storms

Winter weather can mean snow, subfreezing temperatures, ice, strong winds and even heavy rain storms. The National Weather Service refers to winter storms as the “Deceptive Killers” because most deaths are indirectly related to the storm. Instead, people die in traffic accidents on icy roads and of hypothermia from prolonged exposure to cold. It is important to be prepared for winter weather before it strikes.  

Stay Alert to Winter Storms:

Extreme Temperatures

Lake County sees the effects of all four seasons - winter can be bitterly cold - summer can be blistering hot. Extreme temperatures are incredibly dangerous, so its important for you know the risks involved.
Stay Alert to Extreme Cold:

Stay Alert to Extreme Heat: