Boston is bustling this weekend with the great Head Of The Charles Regatta and the ALCS Game(s) at Fenway Park. It doesn’t get much better than that and the weather will be cooperative for all outside events. There is, however, a frontal boundary approaching from the west and a plume of moisture streaming northeastward from the Mid-Atlantic area. It is quite possible that the Boston area will be sitting between these two features so most of any wet weather will bypass the city.
Presently, I am thinking that there is just a low risk of a brief shower occurring over Fenway Park closer to the end of tonight’s contest with the Tigers. Some rain is more likely over southeastern MA and northwestern New England. After the past few amazingly delightful days, it will remain warmer than average today through Tuesday. Plan on highs near 66 degrees today with a southwest to southerly breeze at 5-15 mph. Sunshine will be yielding to increasing cloudiness later in the day. Once the frontal boundary passes in the predawn hours tomorrow, the wind will shift to west-northwesterly and ramp up to 15-30 mph as the morning progresses followed by decreasing gusts by late afternoon. Temperatures will drop into the upper 50s at Fenway Park this evening with lows by dawn of 48-53 across the region. There could be lingering varying amounts of clouds for a couple of hours after sunrise tomorrow then decreasing clouds and increasing sunshine will prevail.
Tranquil weather will last through Monday and Tuesday with highs in the middle 60s under a sunny to partly cloudy sky. It will become cloudier Tuesday afternoon with a slight risk of a shower as the next cold frontal boundary pushes through. After that, we’ll be watching a lobe of energy which has the potential to trigger a storm in the Ohio Valley early Wednesday. This system will shift to Delmarva then track northeastward toward Nova Scotia. It is too premature to be highly confident of the track and extent of precipitation but it bears watching because the air may be sufficiently cold for snow production in the higher elevations of western and northern New England Wednesday night. Meantime, it would be mainly a spell of showery rains over the rest of the region but cold air advection could lead to some snow showers not too far north and west of Boston early Thursday! As the storm deepens in the Maritimes, windy weather will be the rule from Thursday into next weekend. Temperatures may fail to exceed the 40s for highs through most of that period. The mean temperature for October 2013 so far is 4.7 degrees above the average but that will be lowered substantially by the end of next weekend. The new upper air pattern favors stormier weather with slugs of cold air from Canada.
If any new data warrants changes to this weather scenario, I will post a fresh blog this evening as I will be on duty through tomorrow evening.
Make it a safe and happy weekend… and GO SOX!