A weather advisory originally expected to expire at 4 p.m. has been extended to midnight, and the initial estimate of total snowfall has crawled up to 4-8 inches.
Buffalo and Batavia appear to be the primary targets of the storm.
Snowfall will be heavy at times and reduce visibility to a quarter-mile.
Morning travel is expected to be difficult.
There have already been a number of minor accidents in Genesee County and snow removal crews are out in force.
