Forecast discussion: Although temperatures reached 68 degrees in Boston Tuesday afternoon, it is going to feel a lot colder over the next few days. Of course, we have to get passed some heavy rain and strong south winds this evening into Wednesday morning.
So far, Logan Airport has reported our strongest wind of 43 mph with gusts of 55 mph at 2 p.m. Also, we have received just .20 inches of rainfall since this morning. The cold front is inching into central Massachusetts, with another line of heavy rainfall expected in the next few hours. We will see heavy rain during the overnight, so there may be some ponding on the streets and some minor flooding in our rivers and streams. A Flood Watch is in effect for the region until 8 a.m. Wednesday. There is the chance of seeing between 2 to 3 inches of rain before it ends.
Also, colder air is slowly moving over eastern Massachusetts. Temperatures will fall into the upper 30’s tonight, and strong winds have created a Wind Advisory for the state until midnight. As the cold front moves offshore, rain will taper to showers, and at the very end I would not be surprised if parts of western Massachusetts see a few wet snowflakes.
High pressure behind the front will slowly build over the state. As the high’s center inches closer, strong northwest winds will slowly diminish during the afternoon. April sunshine will still be bright, but that cold air will only allow temperatures to reach the middle 40’s. Temperatures during the overnight will fall below freezing. So, you may need to turn the heat back on for the next few nights.
By Friday night, a series of weak low pressure systems will be all around New England. A low will be coming into the area from New York. Meanwhile, a large mass of lower pressure will be to our south. Finally, a quasi-stationary low will be offshore the Gulf of Maine. The lows will help create some scattered showers Saturday, before ending early Sunday morning. A high pressure ridge will give us good weather for Sunday, and part of Monday. You will notice our temperatures will slowly increase back to seasonable conditions.
A new area of low pressure to our southwest will bring the chance for some more showers Monday night, before ending early Tuesday morning. By then, a cold front coming down from Canada will bring the chance of more showers by Tuesday afternoon. Temperatures will return to normal for mid to late April, with highs in the upper 50’s to lower 60’s.
72 hour forecast:
Tonight: Heavy rain, windy, and patchy fog. There is a slight chance for a thunderstorm. A Wind Advisory is in effect until midnight. There could be some ponding on some roadways. Rain tapers to showers to 2 a.m. and may change over to a few wet snowflakes before ending by 6 a.m. We will see a low of 37.
Wednesday: Partly cloudy with diminishing winds and cooler. We will see a high of 43. Winds will come from the north-northwest at 14-17 mph by mid-afternoon.
Wednesday night: Partly cloudy and very cold with a low of 32. Winds will come from the north-northeast at 7-10 mph.
Thursday: Mostly sunny with a high of 44.
Thursday night: Partly cloudy with a low of 35.
Friday: Mostly sunny with increasing clouds by sunset and a high of 47.
Friday night: Overcast skies with showers developing around 5 a.m. and a low of 39.
Saturday: Cloudy with scattered showers. Highs 53-56, lows 40-43.
Sunday: Scattered showers end around 2 a.m. and becoming mostly sunny by mid-morning. Highs 55-58, lows 39-42.
Monday: Partly sunny with possible showers by the evening, but ending early Tuesday morning. Highs 59-62, lows 42-45.
Tuesday: Cloudy with scattered showers by the late afternoon. Highs 58-61, lows 44-47.