Snowy conditions caused problems in the Mid-Hudson Valley Friday morning, creating traffic problems and forcing several school districts to cancel classes or delay their start.
Unexpected snow blanketed Dutchess, Westchester and Sullivan counties overnight but quickly switched to a mix of snow and freezing rain, turning roads into a slushy, snowy, icy mess.
About a dozen districts in the Kingston and Poughkeepsie areas closed schools Friday or delayed openings by two hours after overnight snow caused icy road conditions.
State police say a tractor-trailer jackknifed on the southbound side of the Thruway around 4:15 a.m. in the Orange County town of Newburgh.
Troopers say the truck blocked both northbound lanes between exits 17 and 18 until it was removed shortly before 6 a.m.
Police say snow may have been a factor in the crash.
New York City did not experience snow-related problems, but overnight rain made for some slippery commutes early Friday. Mass transit was not affected.
The National Weather Service has issued winter weather advisories or wind advisories for much of upstate New York, with gusts expected to hit 50 mph in the Buffalo area.
Area airports are reporting some weather-related delays so travelers are advised to check with their carriers on the status of their flights.
As always, check back with NBCNewYork.com for the latest on forecasts, school closures and more.