Traffic
Great Lakes Thanksgiving: 'Micro Blizzards' Could Hit I-90
Erie, PA – Imagine heading east on Interstate 90 for Thanksgiving, traveling along Lake Erie's southern shoreline when a wall of blowing snow suddenly sweeps across the highway. Within moments, semitr
By Jordan Mercer · 2026-11-14T11:34:22.897Z
Erie, PA – Imagine heading east on Interstate 90 for Thanksgiving, traveling along Lake Erie's southern shoreline when a wall of blowing snow suddenly sweeps across the highway. Within moments, semitrailers disappear into the whiteout, brake lights fade from view and a routine holiday trip turns dangerous.
It's a winter driving scenario motorists across the Great Lakes region should understand before Thanksgiving on Thursday, Nov. 26.
According to the National Weather Service NWS , snow squalls are brief, intense bursts of snowfall that can produce strong winds, near zero visibility and rapidly deteriorating road conditions. Sometimes informally called "micro blizzards," these events can make highways hazardous within minutes.
Great Lakes Highways Where Sudden Whiteouts Are a Concern Interstate 90, connecting Chicago, IL; Cleveland, OH; Erie, PA; and Buffalo, NY, is a major holiday travel corridor where sudden snowfall can sharply reduce visibility.
Interstate 94 through Wisconsin, Illinois and Michigan, Interstate 75 through Michigan and Ohio, and Interstate 80 across northern Indiana and Ohio are additional routes where winter weather can disrupt travel.
Drivers near Milwaukee, WI; Grand Rapids, MI; South Bend, IN; and Cleveland, OH, should monitor forecasts when snow showers and gusty winds are possible.
Areas downwind of Lakes Erie, Ontario, Michigan and Superior can experience intense lake effect snowfall, particularly when cold air moves across relatively warmer lake water.
Lake effect snow bands are not necessarily snow squalls. However, both can produce sudden, dangerous reductions in highway visibility.
What Happens When a Snow Squall Warning Is Issued? The NWS issues Snow Squall Warnings when dangerous snow squalls are occurring or imminent.
Warnings generally last 30 to 60 minutes and may trigger Wireless Emergency Alerts on compatible mobile phones.
Sudden whiteouts at interstate speeds can increase the risk of multivehicle crashes, especially when drivers brake abruptly or follow too closely.
What Thanksgiving Travelers Should Do If a Snow Squall Warning affects a planned route, delay travel until conditions improve .
Drivers already traveling should gradually reduce speed, increase following distance, use low beam headlights and avoid sudden braking.
If visibility becomes dangerously poor, safely exit the highway when possible rather than stopping in an active travel lane.
Before departing, check official state road condition services, including 511 Wisconsin , Michigan's Mi Drive , OHGO , 511 Pennsylvania and 511 New York .
Official forecasts and warnings are available from NWS Buffalo , NWS Cleveland , NWS Chicago and other local NWS offices.
This is a Thanksgiving travel preparedness reminder, not a prediction that snow squalls will strike the Great Lakes region during the holiday. Understanding how quickly visibility can disappear could help families make safer decisions on some of the Midwest and Northeast's busiest winter highways.