Lake Effect Storm Mamba February 19-21, 2009
Maximum Snowfall: Lake Erie 13"
(Warsaw); Lake Ontario 35" (Redfield)
Duration: 36 hours +/-
Prime Feature: Prolonged
late season WNW event. Evolved from upslope situation.
After a 3 week break, the season's 13th lake effect event smothered areas east and southeast of Lake Ontario from Thursday
Feb 19-Saturday the 21st. This event began as an upslope situation, as wraparound moisture pinwheeled around a departing storm
system with snows increasing during the afternoon of the 19th. The snows amounted to several inches during Thursday evening
before evolving into more pure lake effect overnight and most of Friday. The activity was most pronounced off the open waters
of Lake Ontario and settled south Friday night as winds veered, affected areas near Lake Ontario back to Niagara county, with
several inches falling in the Rochester area, especially near the lake. The activity wound down on Saturday as ridging moved in
with lowering inversions.
Totals topped two feet over portions of Oswego county and a foot back to northern Cayuga and down into the Syracuse area. Two
foot totals also were recorded on the western Tug Hill, but much less fell along the immediate lakeshore in city of Oswego.
Over 6 inches also feel over far southern Erie and Wyoming counties off Erie, mainly an upslope situation.
Again, this was a good example of the ameliorating effect of Lake Erie's ice, it dampens the lake effect substantially, but
does not cut it off completely.
This event was a decent one affecting a sizeable population. It therefore earns three *** stars.
Here are some representative reports.
Off of Lake Erie...
Off of Lake Ontario...