Lake effect snow is expected to hit Western New York about 10 p.m. and intensify overnight.
The National Weather Service had issued an advisory, but has now downgraded its bulletin to a warning.
The warning remains in effect until 6 p.m. tomorrow.
Officials warn of treacherous driving conditions in the morning with three to six inches of fresh snow having fallen overnight.
An Arctic front may disrupt the snow band Thursday morning, but the wind will also bring its own snowfall across all of Western New York.
The Arctic front could drop from six to 10 inches of snow.
