One weather system out on the horizon has some of my attention in the first half of April; otherwise, I consider this a fairly typical up and down April weather pattern including a little bit of everything. Always find the first half of April interesting in the showcasing of so many types of extreme and severe weather. New England can still experience major winter storms as we did last year while heat is not uncommon in the south while the transitions between warm and cold can feature varying types of severe weather. Unless a winter storm materializes next week or in some later week, this will likely be my last regular update until I can do a seasonal summary.
One of those weather transitions is occurring in southern Ontario Wednesday. A few hours of blizzard-like conditions in Toronto then gives way to ice, rain and wind and then much milder weather Thursday. Some of that weather is headed our way though I don't think we can expect too much in the way of snow. A burst Wednesday evening can give us a small accumulation and then its some later evening ice, eventually a bit of rain and for Thursday we have showery and considerably milder weather as southwesterly flow establishes itself. The higher 30-plus dewpoints should help soften the snow if you can avoid the sporadic rain. Lower dewpoints, and more sun can be expected for Friday. Temperatures will be low enough to freeze surfaces Friday morning and readings will hover around 40 on the mountain during the day meaning more variable snow surfaces.
The weekend, especially Saurday is expected to be pretty wet as yet another storm takes a St Lawrence Valley storm track. Incredible to watch the storm track take on that mode in a general sense beginning in March and this continues with the Saturday rain. Temperatures appear to be above the freezing mark on most sections of the mountain Saturday though not by much. Expect a cold rain with readings in the 30's. More lighter rain is expected for the early part of Sunday before drier weather may begin to envelop the region for the later part of the day.
Next week will feature the return of winter like temperatures for the first 3 days. There should be an opportunity for some snowfall as well with a good 2-3 stretch of sub-freezing temperatures at the higher elevations (valley areas will reach the 40's in this time frame). Models are signaling the opportunity for a major storm system late in the week into the 2nd weekend in April. The storm, a classic wound up, closed off storm could hug the northeast for multiple days in the best traditions of coastal New England weather in April. The storm would arrive as the aforementioned early week cold weather departs so a major winter storm is unlikely but not impossible. If the storm stays far enough south, the weather could actually turn out to be fairly nice on the weekend of April 12th to 13th. I'll keep an eye out and update this call if needed.