December 9th 2024.

 

Today’s Northeast weather discussion…

Today, we have a warm front approaching with widespread rain ahead of it. This will move through today into tomorrow morning, bringing seasonally mild temperatures.  Rain will last a few hours, before tapering off behind the front. General rain totals of 0.25” to 0.50”, but local amounts approaching 0.75” will be possible.  Those parts of New York State and northern New England that hang on with just enough cold air, will see a snow mix. Most of these northern higher elevation areas will see 1-2 inches of snow, with parts of the Adirondacks, Greens into the northern Berkshires and Whites seeing 3-4 inches of snow. These areas could also be dealing with upwards of a tenth of an inch of ice.

We have a disturbance in the northern stream and one in the southern stream, the southern stream will bring mild southern temperatures along with Gulf moisture. Then the two disturbances will interact. We’re going to see low pressure develop along the temperature boundary. This will move north and east gaining intensity as it does so. This looks to track over New England or just off the New England Coast. Due to timing issues, this won’t be the most powerful nor’easter we’ve seen.

Behind the front Tuesday will start off dry, but we will still see partly to mostly cloudy skies. Then a strong cold front will approach and move through the region. Ahead of the cold front temperatures are going to become very mild, southern winds will be breezy with gusty winds. The front will continue to move through the region on Wednesday; with the warm temperatures, most of us will see rain ahead of the front. Rain will be heavy at times. General rain amounts of 1” to 3” of rain are likely. Urban and poor drainage flooding will be a concern. Behind the front temperatures will tumble, a flash freeze is going to be a concern. Those across western Pennsylvania will see a change over to some snow/mix Wednesday afternoon. The transition to snow/mix will continue into the rest of Pennsylvania, New York State and New England Wednesday evening and Wednesday night. Closer to the Coast, into the Middle Atlantic, there won't be accumulating snow, but a few snow showers will be possible for Boston and places like NYC. 

There will be some accumulating snow across interior parts of western into central Pennsylvania, New York State and northern New England, this will be especially true in the mountains. Snow is generally looking to stay light for most areas, at least right now, but those higher elevations, of the Poconos, Catskills, Adirondacks, Greens into parts of the Berkshires, along with the Monadnocks and Whites could see several inches of heavy wet snow.

The storm will be pulling away on Thursday, but winds will remain very gusty. During the event For Wednesday and Thursday, wind gust of 30-40 mph, with some gust upwards of near 70 mph will be possible.

The cold air coming in behind the storm, will kick off some lake effect snow, right now the lake effect doesn’t look to last very long, so general lake effect amounts look to be lighter than not. The region will be much colder for Thursday, Friday, and Saturday, as high pressure approaches and sets up overhead. Sunday will see the high pressure start to exit, ahead of another system approaching frontal system, along with an area of developing low pressure to our south on Monday.