12/04/2025

 Arctic air is moving in.

I have a question at the end of the post that I would appreciate  y'all answering if you could! It would help me figure out what all y'all find Informative and educational .

Looking at the surface chart and regional radar We can see the arctic cold front is approaching and moving into the region. We can also see the snow showers, Squalls and some lake effect ahead of the front. The surface chart also shows The disturbance in the northern stream near Alberta and the disturbance in the southern jet near Louisiana. Both of these features will be playing into our weather tomorrow and Saturday.

As this arctic front continues to drop south and east across the region our temperatures are going to continue to fall during the day. As the winds shift The lake effect snow falling east of lake Ontario Is going to push  southeast and south of lake Ontario and  lake Erie this afternoon into tomorrow. For most 1-3 inches is possible. But for those who get under the most intense parts of these lake effect bands you could pick up 3-6 inches of snow. Elsewhere across the region scattered snow showers and some squalls will lead to a general trace to 1-3 inches. If you're impacted by one of these squalls  it will go from clear to near white out conditions in a short period of time. Which will be making driving very treacherous. Those even on the coastal plain could see a few snow showers with no real accumulation expected. Winds are going to be increasing during the day becoming 10-25  miles an hour, with gust Of 40-45 mph possible at times. Tonight and tomorrow we are going to see High pressure pass over the region, clearing skies will allow temperatures to plummet right into the basement. 

Behind this front is true arctic air. The cold temperatures that are showing up in the Midwest and Upper Great Lakes will be moving in overhead for us tonight and  tomorrow.

Image credit tropical tidbits

That southern disturbance is going to continue to organize in the southern plains and then had towards the Tennessee Valley. Then it should start weakening a bit as it heads towards Virginia and then passes off the coast. Most of it's impacts will be in the southern Middle Atlantic region; While the northern Middle Atlantic deals with some snow showers and flurries. Accumulating snow is going to be very light and looks to be a trace to an inch with a few locations seeing perhaps a couple of inches. The locations that will be most impacted look to be eastern Maryland, Delaware and southern New Jersey. North of these areas like Philadelphia, New York City into southern Connecticut over onto the southern part of the Cape y'all could see a few snow showers but they shouldn't amount to much if anything. The further north you are from the Middle Atlantic region the less likely you are at seeing any snow. Winds tomorrow won't be as gusty as they will be today, with some gust approaching 25 miles an hour. So even though the temperatures will be bone chilling, the wind chill won't be as bad as it will be later today and tonight. Looking at these charts you can see the northern disturbance and the southern disturbance did not phase (Interact). So the region was spared from a more significance snow storm.

Image courtesy of tropical tidbits.

Saturday High pressure will be building in from the south For most this will mean a mix of sun and clouds and mostly dry conditions. But we are still going to have that northern component passing to our north up in Canada. This will bring a chance for snow showers and some flurries across northern New York State and northern New England. Most shouldn't see any accumulation out of this but those closer to the Great Lakes will be seeing some lake effect snow showers starting in the afternoon that could bring a few inches of snow down wind of the lakes. 

Saturday and Sunday will be a bit warmer and winds will be lighter generally 5-10 miles an hour With perhaps a few gusts reaching around 20 miles an hour.

 Sunday the high pressure will still be overhead But we will be having a week trough move through That could kick off a few snow showers here and there. Those downwind of lake Erie and lake Ontario are still going to be dealing with some lake effect snow coming off the lakes. On  Monday we'll see high pressure move back in allowing temperatures to get colder again. Then as I said yesterday Tuesday  through the rest of next week, we are going to be dealing with clipper systems that are going to continue to move across the region. These clippers should bring generally light snow showers that could accumulate 1-4" for some parts of the region . But as the series of clippers continues to move through We will be adding those light snow amounts up. With the cold air in place This will help build a snow pack over a large part of New York State into Pennsylvania and across Northern and central New England. The further south you are (Southern Pennsylvania into the Middle Atlantic) the temperatures might be warm enough that you will only see a rain mix or all rain out of these events. But don't worry Your turn will be coming. As I also said yesterday these clippers will have to be watched closely. Because there is a chance that any one of them could possibly see some secondary low development off the coast that could enhance snowfall potential.

I've been getting asked if there are any major storms on horizon. The answer to that is no. But the pattern is active and we're going to be having plenty of cold Winter is still in its early phase. So there is plenty of time to see major snowstorms impact the region. The pattern is very progressive right now due to the lack of upstream blocking. But that is going to change at some point.

Did anyone read the post on bombogenesis, and if you did What did you think about it? Did you learn anything?