New York residents in Buffalo and other parts of the state are waking up Friday morning to heavy snowfall that officials warn could “paralyze” the hardest hit communities.
Heavy snow would likely result in “near zero visibility, nearly impossible travel, damage to infrastructure,” paralyzing the hardest hit areas, the National Weather Service warned.
Snow began to fall on Thursday and continued overnight, threatening to leave Buffalo buried in more than 4 feet of “historic snowfall,” the service said in a Friday morning update.
“Very cold air will accompany this event with temperatures 20 degrees below normal forecast by this weekend,” it warned.
“This is a life-threatening storm,” Hochul said at a news conference Thursday, adding that state officials were standing ready to conduct rescues.
Erie County, home to Buffalo, issued a driving ban as residents prepared for the worst of the storm.
“Only those authorized for emergency travel are to drive,” County Executive Mark Poloncarz tweeted Thursday, noting that the ban would be re-evaluated Friday.
Commercial traffic was banned on parts of some major state roads, including the New York State Thruway, also known as Interstate 90. Meanwhile, Sunday’s NFL game between the home team Buffalo Bills and the Cleveland Browns was moved to Detroit.
The storm is bringing what is known as “lake-effect snow,” which occurs when arctic air races across the relatively milder waters of the Great Lakes.
As the planet has warmed from the increase in greenhouse gases, so have the lakes, meaning more evaporation into the atmosphere during the winter. This has led to an increase in lake effect snow, but that trend is not expected to last.
A recent study used a regional climate model to investigate these changes in lake effect snow if our current rate of greenhouse gas emissions continues. By mid-century, the amount of seasonal lake effect snow is projected to increase modestly, as the Great Lakes will remain ice-free longer into the winter.
However, as the air warms, the amount of snow during the transitional seasons of late fall and early spring is expected to decrease, with more of the precipitation falling as rain. By late century, the frequency of extreme cold over the Great Lakes is expected to decrease substantially. Similarly, lake temperatures are projected to increase further, with the warming environment implying an increase in rain at the expense of snow during the winter.
Lake Effect Snow Warnings were in effect early Friday for the Buffalo area and downwind areas of Lake Ontario, the National Weather Service said.
Areas affected by snowfall were also expected to possibly see thunder along with snow, sometimes called “thundersnow.”
By early Friday morning, the National Weather Service in Buffalo said it had already received multiple reports of thundersnow just south of downtown Buffalo.
Kathryn Prociv is a senior meteorologist and producer for NBC News.