The big story through Thursday will be the Arctic chill & dangerous wind chills, hence a wind chill advisory has been posted for all of WNY & the Finger Lakes for tonight & Wednesday morning for wind chill readings that will likely average between -20 & -10 & possibly dip to -25 at times! A brisk northerly wind will blow on the backside of the developing nor'easter affecting the big cities tonight into Wednesday. The cold, Arctic flow will not only produce the nasty wind chills, but also provide us with a little lake snow, especially around & north of the Thruway through Thursday. The lake snow will not add up to much, but as you can see in the graphic above, around & north of I-90, a 1 to 3" snowfall is expected through Wednesday, while a bit more will fall in spots near Rt. 104 to the lake shore, & just a coating to an inch or so across the Finger Lakes south. Lake snows will probably flare up a little more so later Wednesday night into Thursday, as a little weakening system slides just to the south, which will likely provide most of us with a minor accumulation for late Wednesday night through Thursday.
The winds will then become more westerly to southwesterly late Thursday night & especially Friday, which will shift the lake snows out of here & east & eventually northeast of Lake Ontario in advance of the next Arctic front due to blast through later Saturday/early Saturday night. Ahead & with the Arctic front late Friday night into Saturday, a solid 1 to 3 or 4" snowfall looks to be probable, before significant lake snows quite possibly set up Saturday night into Sunday close to, or in the Greater Rochester area. This is something we will have to watch closely over the coming days. Either way, it will be brisk & bitter again later Saturday night into Sunday & right through at least the first part of next week! What a stretch to say the least! At this point, no big storms appear to be on the horizon through the next week or so, but this could change so stay tuned for updates during the period.
Have a great night & do what you can to stay warm everyone!