A blast of Arctic air is sweeping across New England on Friday night, thanks to a major storm that will miss us.
Some of the rain in Cape Cod and the islands on Friday morning was the result of an intense cyclonic storm that was moving toward our east to sea. If the storm had drawn closer, we would be watching a blockbuster nor’easter. But the storm will affect New England in a way, and that is to bring very cold air behind it.
The temperature will start dropping from tonight onwards as the winds will increase and the temperature of the chilly winds will drop below zero. Saturday is going to be very cold, one of the coldest days you can get in this part of New England. It’s semantic whether or not it’s possible to be a few degrees cooler, but the bottom line is that very few people will spend any time outside on a Saturday. Check out chill readings of air below zero all day and the actual temperatures struggling to reach mid-teens in the afternoon.
As the storm moves toward eastern Canada, winds will calm and temperatures will resume Sunday after a very cold Saturday night. Light winds will make it more bearable in the afternoon.
We’ve known for days that the storm was going to hit on Monday. I am writing about how the track of this storm will determine the type of precipitation and now that we are closer to the event it is looking more like a rain storm rather than snow. We’ve all heard of the term nor’easter for those stormtroopers that live off the beach. In winter they often bring strong north-easterly winds, heavy snow or heavy rain. Monday’s storm takes a different track, a hot one.
There will be light snowfall or mixed rainfall on Monday morning, which will turn into rain including inland areas. When a storm moves inland, we call it southeast because southeasterly winds bring warm moist air from the Atlantic.
As a kid, I remember one southeast wiping out an entire snow pack in 24 hours, which we call the January thaw. I’ve seen temperatures go down to minus in the 40s and unless we see that range from Sunday to Monday, it’s going to be close.
As the low pressure moves west of us, sea air will fill the coastal plain and move far inland. This will turn any snow into rain, which will end with cooler conditions during the late morning hours. It may go as far west as the Interstate-495 belt in the 40s, but it’s definitely going to go above freezing.
Temperatures above 40 degrees may be normal by Monday afternoon.
The storm will dissipate in northern Maine on Monday evening, ending the rain and blowing cold air back into New England. During a storm, it will become quite windy and it would not surprise me if we see some power outages, especially along the coast with a strong current coming from the sea. Sometimes strong winds in the upper levels of the atmosphere get stuck just above the ground and do not meet at the surface. More data in the coming days should give us a better picture of how bad the air could be on Monday.
The weather will clear on Tuesday with cooler weather, but more arctic wind is possible next weekend as the pattern remains quite chilly in the east.