That would make for another healthy shot of fall temps invading our region. You notice I’m using the GFS there because it matches other models and the overall pattern. Even with that deep of a trough, the model never brings temps below the 75-80 degree range for highs and even shows 90s at the tail end of it. This is what NOAA has given us, folks.
Here’s the surface map from that model run showing the rain potential Sunday and Monday…
The Canadian is very similar…
Before I get to a little winter talk, let’s get you caught up on Hurricane Lee. This continues to turn toward the north and will begin to accelerate in the coming days. The latest forecast from the National Hurricane Center has the cone of uncertainty across eastern New England into Nova Scotia…
The Hurricane Models are closer to Nova Scotia than New England, but a few are nor farther west…
The GFS Ensembles are similar overall…
In addition to Lee, we have Margot and two more systems out there in the Atlantic…
This is turning into another very busy tropical season in the Atlantic! Shocker, right?
Moving on to the upcoming winter and the latest run of the CanSIPS seasonal model. This model updates at the beginning of each month and usually has a hard time finding anything other than ridges and above normal temps across the USA. That has not been the case this year as it continues to show a deepening overall trough into our region this winter.
We see the trough start to develop in December…
Watch that trough develop west to east with blocking going up across Canada…
That deepens even more in February…
That hangs tough into March…
This kind of setup for the winter would certainly bring a lot of potential to our region. There are some interesting analogs I’m working with that are similar to the above maps. ❄️
Have a terrific Tuesday and take care.
I’m always ready for chili no matter the temperature outside. 🙂
Thanks Chris. Very interesting Fall and Winter ahead.
Below is a link that explains what may happen this Fall and Winter with the Polar Vortex plus a change from La Nina to El Nino Winter 2023- 24.
https://www.severe-weather.eu/long-range-2/winter-forecast-2023-2024-season-early-look-polar-vortex-el-nino-united-states-canada-europe-fa/
The warm water anomaly off the west coast of South America is beginning to extend farther to the west, which is key to maximizing the Winter weather impact in our neck of the woods from El Niño.
Speaking of warm water, in their latest update, the National Hurricane Center is forecasting Lee to keep moving on a heading towards the Canadian Maritimes provinces, with a likely point of impact near St. John, New Brunswick on Sunday at approx. 8:00 am local time. This is very bad news, even if Lee weakens to a tropical storm status as expected, because St. John is located on the Bay Of Fundy, which is known for having the highest tides on the planet. Lee is currently moving at 6 mph and though it’s expected to speed up, the time of impact will be critical. Right now the storm is due to arrive at low tide, but hurricanes don’t adhere to schedules. Lee is a very broad storm, so the risk from storm surge is high. If the storm makes landfall close to high tide, we could be looking at another hurricane Sandy!