I know there won't be many people reacting to this idea/post on ~8 hours notice (I kinda missed this approaching) - but I was surprised to see the wind/rain pattern unfolding tonight. As per usual, I'm using Point Pelee as an example...
Despite strong NE winds and colder temps, the rain is moving north of SW Ontario:
Harrow Airport says it's 3.5 degrees...
and here's the surface winds:
(yes, NE winds) - but the south winds aren't terribly far away!
This is (in my opinion) a great setup for big NUMBERS of birds to drop in at migrant traps (like Pelee!)... You'd never know from the ground, but warmer southerly air is flowing over Pelee from places further south. Check out the 850mb winds:
This is a very similar setup to the BIG day from May 11, 2016 - with huge numbers of neotropic migrants from Pelee / Pelee Island...
https://peregrineprints.blogspot.ca/2016/05/crazy-birding-may-11th-2016-pelee-island.html
IF it turns out, tomorrow will be "March/April" themed - so flickers, winter wrens, kinglets, juncos etc - but it could be a pretty interesting show out there. I won't be there, but maybe you will be? Looking forward to the ebird checklists!