DEDHAM, Mass. — We’re on a WEATHER ALERT from the Boston 25 Weather Team because the National Weather Service has issued multiple storm warnings, watches, and advisories for a powerful fall nor’easter.
The slow-moving storm is expected to impact Massachusetts beginning Friday and continuing through the weekend, bringing hazardous coastal conditions, strong winds, and periods of heavy rain.
The National Weather Service has issued the following storm alerts:
High wind warning and wind advisory
A high wind warning is in effect for the entire Massachusetts coastline.
The warning is in effect for Eastern Essex, Suffolk, Eastern Norfolk, Eastern Plymouth, Southern Plymouth, Barnstable, Dukes, Nantucket, and Bristol counties from 8 a.m. Friday until 2 a.m. Sunday.
Northeast winds of 25 to 35 mph, with gusts up to 60 mph, are expected.
“Damaging winds could blow down trees and power lines. Power outages are possible. Travel could be difficult, especially for high-profile vehicles,” the NWS warned.
A high wind advisory is also in effect for Central Middlesex, Western Essex, Southern Worcester, Western Norfolk, Southeast Middlesex, Northern Bristol, Western Plymouth, Northern Worcester, Eastern Hampden, and Northern Middlesex counties from 8 a.m. Friday until 2 a.m. Sunday.
Northeast winds of 15 to 25 mph, with gusts of 35 to 50 mph, are expected.
“The long duration of the winds coupled with heavy rain and fully leafed trees may exacerbate the risk for tree damage and power outages,” the NWS warned.
Coastal flood warning
A coastal flood warning is in effect for Eastern Essex, Suffolk, Eastern Norfolk, Eastern Plymouth, Barnstable, Dukes, and Nantucket counties from 5 a.m. Friday through 8 p.m. Sunday.
The NWS warned that up to two feet of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways.
“Strong northeast winds with large waves will result in minor coastal flooding with pockets of moderate coastal flooding over multiple high tide cycles from late today through the weekend,” the NWS said. “The water also may struggle to vacate the area after the high tides given persistent strong northeast winds. The greatest risk for coastal flooding appears to be south of Boston and on the Cape and Islands. In addition... the long duration of northeast winds coupled with large waves over multiple high tide cycles will result in areas of severe beach erosion for a prolonged period.”
High surf advisory
A high surf advisory is in effect for Eastern Essex, Suffolk, Eastern Norfolk, Eastern Plymouth, Barnstable, Dukes, and Nantucket counties from 5 p.m. Friday through 8 p.m. Sunday.
The NWS warned that large breaking waves of 6 to 13 feet are possible in the surf zone.
“If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property,” the NWS wrote in its advisory. “Inexperienced swimmers should remain out of the water due to dangerous surf conditions.”
Gale and storm warning
A gale warning is in effect for coastal waters from Cape Elizabeth, Maine, to the Merrimack River in Massachusetts from 11 a.m. Friday to 8 p.m. Sunday.
The NWS warned of northeast winds of 25 to 35 kt with gusts up to 45 kt and seas of 11 to 16 ft.
A storm warning is in effect for the ocean Waters from Provincetown to Nantucket from 8 a.m. Friday to 8 p.m. Saturday.
The NWS warned of northeast winds of 25 to 35 kt with gusts up to 60 kt and seas of 15 to 21 feet.
“Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility,” the NWS said. “Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions.”
WATCH THE FORECAST | INTERACTIVE RADAR | DOWNLOAD THE APPS
Follow our Boston 25 Meteorologists on Twitter for updates:
AJ Mastrangelo | Shiri Spear | Greg Perez | Vicki Graf
Stay Informed:
Utilize MEMA’s real-time power outage viewer to stay informed about current power outages in your community and region, and across the state, including information from utility companies about restoration times.
Utilize MEMA’s live weather radar and forecasting tools.
MassDOT | MBTA | Logan Airport | Amtrak
Online Resources:
Massachusetts Emergency Management Agency - on Facebook and Twitter
Federal Emergency Management Agency
National Weather Service/Boston
National Weather Service/Albany, NY
Download the FREE Boston 25 News app for breaking news alerts.
Follow Boston 25 News on Facebook and Twitter. | Watch Boston 25 News NOW
©2026 Cox Media Group
/cloudfront-us-east-1.images.arcpublishing.com/cmg/7QOJU3BNCJERBNKJC5LWTBYFLU.png)
