~One immediate, very fascinating, one was slower movement of systems
~The other longer term, a picture of things to come
Toronto for instance, is under the clouds along a good chunk of Eastern North America, this will not stop suddenly, but will gradually fall under the spell of clearer dry skies (as most of snow vanishes completely further North).
By the 21st, the forecast Makes North Central Canada as warm as Florida while the clouds cool the central coasts of North America, this is a bit of a precursor of the climate to come. WD May 9, 2019