This first lake effect storm of the season occurred ahead of and along a fast moving cold front that crossed Western New York early on Saturday, November 21st.  Although surface temperatures were not that cold (low 30s),  the air was cold enough aloft to allow for a relatively steep lapse rate to develop as the air moved across the 49 degree waters of Lakes Erie and Ontario!  The temperature differential between the warm lake and "cool" air produced enough local instability to generate lake effect snowbands off both lakes.  As is often the case with early season snow storms, the lakeshore areas received rainfall rather than snow.  This was due to the close proximity to the relatively warm lake.  Maximum snowfall was recorded at North Osceola in western Lewis county east of  Lake Ontario where orographic enhancement helped to produce 10 inches of wet snow. Flake Rating - *