Thanksgiving Wind & A Coastal Storm for the Weekend
We are wrapping up what i think is the best weather day of the week. We had ample sunshine today. Temperaures reached into the 60s. You can’t really ask for much better especially this month which has been running 5 degrees below average. Skies should start out clear tonight before some high clouds roll in overnight. Temperature will likely settle in the 40s all night especially once cloud cover rolls in.
There is nothing to worry about on the radar tonight or early Wednesday. We do have a cold front arriving later in the day and there could be a passing shower with that front. Lack of sunshine should keep temperatures in the 50s to near 60. Then a storm over the Great Lakes moves to New England Wednesday night and the winds will start cranking. Thursday Thanksgiving day will be a dry windy day with NW winds of 20 to 30 mph with higher gusts to 40 mph or so especially in the morning. We will have a fair amount of sun with highs just in the 40s.
HIgh Pressure is building across Southern Canada and down the east coast as we will have a strong storm to the east and a major storm to our west. We will be sandwiched in between the two Friday with some sunshine and chilly highs in the 40s. Then attention turns to the storm to the west of us as it moves eastward.
Normally we might be looking at a storm like this and conclude that it is just a simple cold front or just plain rain however the situation here is different. We have a developing blocking pattern in the atmosphere which creates odd outcomes of lows like this. Instead of moving eastward and passing to our north the storm is blocked thanks to a stalled upper air and surface storm Newfoundland.
You can see on the upper air map how the block forces the low to the west to pass to our south. This is how we get big snowstorms if we were deeper into December or in the standard winter months. Right now the atmosphere is in a somewhat tenuous position when it comes to cold air but this is a situation where we would experience dynamic cooling. The atmosphere cools from the top down.
Right now there really is no way to even begin to determine how this all plays out however due to the long holiday weekend, I will be putting out a very early call snow forecast map Wednesday afternoon for Patreon members and Thursday night it will be available on the free Meteorologist Joe Cioffi Weather App. National Weather Service snow forecast maps are on the app from Maine to South Carolina. They will auto update when we are within 72 hours of the arrival of snow.
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MANY THANKS TO TROPICAL TIDBITS FOR THE USE OF MAPS
Please note that with regards to any severe weather, tropical storms, or hurricanes, should a storm be threatening, please consult your local National Weather Service office or your local government officials about what action you should be taking to protect life and property.