From the National Weather Service:
Impressive late October storm system forecast to impact Southern New England beginning tonight through Monday with the height of the impacts late Sunday through early Monday morning.
Below is the latest briefing outlining the threats anticipated. The summary points are as follows:
Strong to damaging winds ... threats over all of Southern New England. Southeasterly gusts as high as 50 to 70 mph Sunday night, followed by westerly gusts 40 to 55 mph Monday. A high wind watch is in effect for expected widespread tree damaging along with scattered power outages given full leafed trees.
Heavy Rainfall / Flash Flood potential ... threats over all of Southern New England, however Western New England under the greatest threat. Widespread 1 to 3 inches forecast with locally higher amounts of 4 to 5 inches. Urban / street flood threat mainly with the lower risk of small stream flooding.
Marine impacts ... southeast storm force winds of 45 to 60 kts Sunday night, westerly gales 35 to 45 kts Monday. Waves building 15 to 20 feet, with 10 to 15 foot waves along Atlantic facing beaches. Splashover mainly along the coast considering low astronomical tides and storm surge of 1 to 3 feet expected.
Uncertainty ... we are watching potential tropical cyclone #18 out of the Caribbean. If it gets drawn more west towards the approaching system out of the Central U.S., then there is the potential for enhanced impacts in both winds and rainfall.