Westerly flow is just not as long lasting as i assumed, u can see a lot of this from the lake effect archives..
Best events are long duration with oscillating bands that pass through several times lol
But they sure can pack a punch..
Couple events from last year..
Snowfall rates are estimated to have
peaked around 3 inches per hour Monday morning judging from NY State
Mesonet webcams and snow stakes. Some thunder snow was also noted
over the Tug Hill around mid-day Monday, just before the lake effect
plume began to weaken. By the time the snow plume quickly diminished
Monday afternoon, up to a foot of snow had fallen across southern
and central portions of the Tug Hill in just a few hours Monday
morning.
Given the high snowfall rates produced off of both lakes, including
over metro Buffalo during the evening commute, as well as max
accumulations over 2 feet over the southern Tug Hill in less than 12
hours, this event earns 3 flakes ***