Lake Effect and Winter Storms

Every winter we hear about them: lake-effect snowfall and ice storms—the one-two punch of winter weather that affects millions.

What is a Lake-Effect Storm?

Residents living on the eastern and southern shores of the Great Lakes are quite familiar with the dreaded “Lake Effect.”  In fact, wherever a large body of water meets a blast of cold air, you have the recipe for a dumping of lake-effect snow. Caused by simple physics, these uncommonly heavy snowfalls occur when warm, moist air over a lake rises into a moving front of cold air. As this moisture lifts, it cools, condenses, and then falls as snow, and lots of it…often as much as 5 inches an hour for several hours.  Life can come to a standstill for everyone except the snowplow drivers.

Lake Effect Snow: How It Works






















How are Ice Storms Different from Lake Effect Storms?

As dramatic as lake-effect snowstorms can be, ice storms are even more destructive. Ice storms are caused by conditions almost exactly opposite those of lake-effect storms. They occur when warm, moist air above moves over a cold air mass below. As the moisture above turns to rain, it falls through the cold air, becoming super-cooled until it hits the cold ground. Immediately the rain turns to ice, coating everything including roads, trees, and power lines. Havoc on the freeway, downed power lines, and trees falling onto roads and houses are only the beginning of an ice storm’s chaos. Unable to open doors, people become trapped in their cars. Crops are severely damaged. Walking outdoors is near impossible. If the inconvenience of such weather events is not bad enough, these types of storms become a real health hazard. Thousands of injuries occur on the highway, as well as the result of falls on ice and snow. High winds and cold temperatures often lead to hypothermia and frostbite, particularly for those trapped in their cars, or at home without heat and power. Risk from these hazards increases as people are forced to venture into the storm to find help.

How can we Stay Safe, Fed, and Warm? While the health and welfare of thousands are threatened by lake-effect and ice storms every winter, many endure them well. Those who thrive best are those best prepared. A three-day store of easy-to-prepare food and water will relieve concerns about leaving home to stay fed. Emergency lighting and a heater with fuel will be warmly welcomed during extended power outages. And a portable kit filled with food, water light, and heat in the car and at the office will make both places much more pleasant until it’s safe to come home.