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Pennsylvania Winter Weather Awareness Through Oct 31: Dangerous Snow Squalls
Harrisburg, PA – Pennsylvania drivers can encounter dangerous highway conditions when fast moving snow squalls suddenly reduce visibility to near zero, creating slippery pavement and increasing the ri
By Lena Wood · 2026-10-28T09:38:19.470Z
Harrisburg, PA – Pennsylvania drivers can encounter dangerous highway conditions when fast moving snow squalls suddenly reduce visibility to near zero, creating slippery pavement and increasing the risk of multivehicle crashes. As winter weather awareness efforts continue Wednesday, Oct. 28, residents are being reminded that even brief bursts of heavy snow can turn routine travel into a serious safety threat.
According to the National Weather Service NWS , snow squalls are brief, intense bursts of snowfall accompanied by gusty winds and rapidly deteriorating visibility. These conditions can develop within minutes, leaving motorists little time to respond.
How Snow Squalls Threaten Pennsylvania Highways Unlike prolonged winter storms, snow squalls can arrive suddenly, creating near whiteout conditions and quickly covering roadways.
Interstate 80, Interstate 81, Interstate 79, Interstate 76 and the Pennsylvania Turnpike are among the major travel corridors where sudden snowfall could create hazardous driving conditions.
Motorists traveling through Erie, Allegheny, Centre, Dauphin, Luzerne and Lackawanna counties may face additional risks on exposed highways, elevated roadways and mountain passes.
Western and northern Pennsylvania can be especially vulnerable to sudden snow bursts during colder months, particularly across higher elevations of the Allegheny Mountains and areas affected by lake effect snow near Lake Erie.
What Is a Snow Squall Warning? The NWS issues Snow Squall Warnings when dangerous snow squalls are occurring or expected to develop shortly.
These warnings typically last 30 to 60 minutes and may activate Wireless Emergency Alerts on compatible mobile phones.
A warning signals an immediate threat to motorists, particularly those traveling at highway speeds where sudden visibility loss can contribute to chain reaction crashes.
What Pennsylvania Drivers Should Do When a Snow Squall Warning is issued, the safest option is to delay travel until conditions improve.
Motorists already traveling should:
Reduce speed gradually and increase following distance. Turn on headlights to improve visibility. Avoid sudden braking or abrupt lane changes. Exit the highway safely before entering severe conditions when possible. Never stop in an active travel lane during a whiteout. Residents can monitor forecasts and official warnings through the NWS State College office , NWS Pittsburgh office and NWS Philadelphia/Mount Holly office , which serve different portions of Pennsylvania.
Winter weather awareness efforts continue through Saturday, Oct. 31, emphasizing how quickly snow squalls can transform Pennsylvania highways into dangerous whiteout conditions.