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Forecast: More Rain Through Thursday

There's a frontal system slowly moving through the area today with a plume of moisture riding along this front through Thursday. The rain will come and go, varying from a drizzle to torrential downpours dumping an inch-plus per hour.

The water vapor loop, which shows the depth of moisture in the atmosphere, not clouds, supports the wet forecast. Moisture moving up the coastline will bring us the heavier downpours today, tonight and again Thursday.

Later Thursday there could even be some thunderstorms, but these won't be severe as the system will finally depart that day.

A strong trough in the atmosphere has brought a river of moisture to the east coast. (Courtesy College of DuPage)
A strong trough in the atmosphere has brought a river of moisture to the east coast. (Courtesy College of DuPage)

Rainfall totals will be highly variable due to the nature of the showers. Many towns will receive another 1 or 2 inches of rain between now and Thursday evening.

Additional rainfall will occur through Thursday evening. (Dave Epstein/WBUR)
Additional rainfall will occur through Thursday evening. (Dave Epstein/WBUR)

The heaviest rain is across eastern area of the state, which has a warning for urban flooding.

A flood watch was posted for eastern areas Monday morning. (Dave Epstein/WBUR)
A flood watch was posted for eastern areas Monday morning. (Dave Epstein/WBUR)

The strongest winds have moved off the coast, so we won't need to contend with that element of the forecast today. But, it will still be breezy.

More showers move through the region Thursday. This area will hug the coastline and if it slips a bit further east than the forecast we would see less rain. Head a bit west of Interstate 495 and you'll find heavier showers.

Sunshine returns Friday and Saturday, but another weather system brings back clouds and more showers by Sunday night and into early Monday.

Colder temperatures will follow with some of the chilliest air of the season coming next week.

You can follow my updates here and on Twitter @growingwisdom.


Wednesday: Clouds and showers. Some heavier downpours. Muggy in the morning, less humid by sunset. Highs 65-70.

Wednesday night: A few showers and heavier downpours. Less humid, lows 50-55.

Thursday: Showers. Cooler. Chance of a thunderstorm in the afternoon. Highs around 60.

Friday: Mostly sunny and cooler. Highs 60-65.

Saturday: Mostly sunny and pleasant highs within a few degrees of 65.

Sunday: Sunshine followed by increasingly cloudy skies. Highs in the lower to middle 60s.

David Epstein Twitter Meteorologist
David Epstein is WBUR's meteorologist.

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