LocalSYR

More cold, lake effect snow tonight

<B>(Wednesday Evening March 20, 2013)</B>Widespread snow showers will diminish across central New York this evening. There will still be some lake snow overnight but again we expect the snow to be concentrated once again north of Syracuse with the greatest totals over the Tug Hill. It should be chilly again Thursday with more snow showers, especially in the afternoon.
This evening we will transition from a spray of widespread, bright snow showers to more concentrated lake effect snow north of Syracuse.  Without the competition of daytime heating, lake effect should become more productive over parts of Oswego, Jefferson, Lewis and northern Oneida counties.  The heaviest snow, like last night, will be over the Tug Hill where a new 4-8” of snow is possible. This is in an area that has already seen 1 to 2 feet over the last 24 hours.

Meanwhile, a storm down at the ground and in the upper atmosphere is stalled up over the Gulf of St. Lawrence. Weaker storm systems will rotate around this main storm, thus enhancing snow shower chances for all of Central New York.  One such disturbance should impact the region Thursday afternoon with clouds and some snow showers.  However, the best chance for snow showers in the Syracuse area will come Thursday night into Friday.  That St. Lawrence low will remained bottled up through the end of the week. It won’t be moving because of a blocking area of high pressure situated north of Hudson’s Bay up to Greenland. It will force 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.

For Monday and Tuesday there are still some question marks. What seems certain is a storm system will develop along the mid Atlantic coast Sunday night or Monday.  Where that storm heads after that is up for debate.  While some computer models bring this storm far enough north for snow in central New York, one of our more reliable models keeps it south of us during this time. We’ll keep you posted.
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