On our midday weather map, a large area of low pressure from the surface through the middle and upper atmosphere is evident over southeast Canada and northern New England. This storm will dominate our weather through the end of the work week as it brisk winds around the storm circulate unseasonably cold air into the region. The cold air moving over Lake Ontario will produce lake effect snow and flurries east and southeast of Lake Ontario through at least Friday.
Winds this afternoon will remain out of the west, thus, lake effect snow will be confined to areas north of the Thruway and east of Lake Ontario. However, this time of year with a higher sun angle, lake effect snow will be most productive overnight and during the bookends of the day. During the afternoon, the sun (even if it’s not entirely visible) will disrupt the lake effect process, resulting in a less impressive lake effect snow. Still, several inches of new snow will likely fall over the Tug Hill region with less amounts for areas surrounding the elevated plateau.
Although the heaviest snow the rest of today will fall well north of Syracuse, that doesn’t mean Syracuse won’t see any snow. We do expect snow showers this afternoon and evening in and around Syracuse but any accumulation would be an inch or less.
Additionally, ever so often weaker storm systems will rotate around the main storm, thus enhancing snow shower chances for all of Central New York. One such disturbance should impact the region tomorrow afternoon in the form of clouds and perhaps some snow showers. However, the best chance for snow showers in the Syracuse area will come Thursday night into Friday. The storm that brought us the snow Monday night and earlier today will track northeast into eastern Canada where it will sit through the end of the week. It will stall because of a blocking area of high pressure situated north of Hudson’s Bay up to Greenland. A piece of that stalled low will shift back west and through central New York during this time. It will bring some moisture back our way and, more importantly shift our winds into the northwest and thus increase Syracuse’s chances for lake effect snow showers to end the week.
By the weekend, our eastern Canadian storm will finally begin to loosen its grip on us and move out into the Atlantic Ocean. That means we should dry out for Saturday and Sunday but don’t expect a big warm up. In fact, there our signs our temperatures will remain below normal right into next week.