Forecast discussion: Well, high pressure ridging brought Boston a nice Saturday, although there were increasing clouds during the early afternoon. The high pressure ridging will lose its influence this evening, as a cold front passes through Saturday night. The front may create some isolated showers for a few hours. Then, we will see some strong northwest winds during Sunday, along with possible showers from a weak disturbance during the afternoon. This will make the ball dance in the air a little bit at Gillette Stadium this afternoon.
We will begin to see drier and clear skies by Sunday night, as the high pressure center moves closer east. This will create a greater influence on our weather over the next few days. Also, a warm front to our west will slowly help bring warmer air back into Southern New England by the middle of the week. Our temperatures during the day will increase into the lower 60’s on Tuesday, and we will see the upper 60’s on Wednesday.
However, there will be a small price to pay for the warm weather. The warm front will be followed by a cold front, which will bring some isolated showers by late Wednesday morning. However, the shower activity will come to an end by Wednesday evening. A strong high pressure system coming down from Canada will bring sunny skies but cooler temperatures by Thursday.
As we head into Thursday night, the computer models are having a very difficult time keeping any continuity with the forecast. In fact, the same models continue to change their forecast from model run to model run. But, here are the basic points of the forecast going into Halloween day. The eastern U.S. will be under a very deep long wave trough in the upper levels of the atmosphere. Some upper level dynamics will fall down into the Southeast U.S. Thursday night. But, where the dynamics is located will tell us on what happens with a low pressure system developing offshore. It appears that the low will remain well to the east of New England. But, the American model believes that a second, weaker low will develop over New York, and bring some isolated showers early next Saturday morning. Also, it would create some strong winds, thanks to the tight pressure gradient.
However, the European and United Kingdom models do not form that weaker low. But, all models do agree that we will see the coldest air of the season push down into the region by Friday. In fact, low temperatures Halloween night may fall into the upper 30’s, with highs barely reaching 50 degrees on Saturday. For now, I do not have much confidence in the forecast after Friday afternoon.
72 hour forecast:
Tonight: Increasing clouds with an isolated shower from 2 a.m. to 5 a.m. with a low of 49.
Sunday: Mostly cloudy with isolated showers by the late morning and a high of 59. It will be breezy with west-northwest winds of 17-21 mph with gusts of 35 mph.
Foxboro Stadium Forecast (1:05 p.m. vs. Chicago Bears): Cloudy, isolated shower, windy, 57.
Sunday night: Partly cloudy after 2 a.m. with a low of 44. Winds will come from the west-northwest at 12-15 mph.
Monday: Mostly sunny with a high of 57.
Monday night: Partly cloudy with a low of 46.
Tuesday: Mostly sunny and warmer with a high of 64.
Tuesday night: Increasing clouds and not as cool with a low of 55.
Wednesday: Mostly cloudy with isolated showers arriving by the late morning, but ending by the early evening. Highs 67-70, lows 46-49.
Thursday: Mostly sunny and cooler. Highs 55-58, lows 41-44.
Halloween: Mostly cloudy with possible showers after midnight. Highs 52-55, lows 39-42.
Saturday: Showers end by the early morning, with mostly sunny skies. Highs 47-50, lows 36-39.