WPC outlook for Monday - showing a sub 980mb monstrosity.
WPC outlook for Sunday - showing warm air invading the province - and the two lows that will phase (and bomb) over the great lakes Monday.... This is a setup that can bring rares from multiple directions (west coast and gulf coast!)
WPC for late Saturday/Early Sunday - That odd front over Quebec is a setup I've seen bring rares in the spring - what will happen here?
Euro 850mb winds (above) and GFS precip below... A few "model runs" giving a hint at what may transpire..
This is a BIG ONE - but I always find that ~50% of these storms are not "packin rarities" at all... So IF it does end up bringing the goodies - it should be VERY good...
It's the last week of November - this is rarity time! And (I think) a storm this large has the potential to pull something in from long distances...
Hence - the first RARITY ALERT i've posted here in quite some time!