The 1.8 inches that fell in Rochester on just Dec. 2 (the 24-hour count starts and ends at 7 a.m., not midnight) was the first measurable snow of the year for the city. The latest-ever first measurable snow for Rochester was Dec. 10, 1948.

Monday afternoon will bring additional lake-effect snow showers, while Tuesday’s snow will be more concentrated in the morning. After Monday’s snowfall, the lake-effect snow pattern is expected to persist into Tuesday,

Due to the lake effect snow and the closure of the I-90 in Pennsylvania from the NY State Line to I-79, the Thruway (I-90) WESTBOUND is CLOSED to ALL VEHICLES from exit 59 (Dunkirk – Fredonia – NY Route 60) to the PA State Line until further notice.

"That's just a generic widespread aerial pressure going through, but we haven't gotten a chance to look that much into the snowfall amount yet for that day itself," said NWS meteo