BOSTON – Thursday, September 24, 2026 – Mayor Michelle Wu today issued a coastal storm warning for the City of Boston beginning tomorrow, Friday, September 25, through Sunday, September 27, based on the National Weather Service forecast. During this period, with a peak of Friday evening into Saturday, residents can expect potential impacts including heavy rain, strong winds, and coastal flooding and erosion. The latest forecast indicates up to two to four inches of rain, with high damaging winds, with potential for minimal flooding and ponding of water on roadways. Residents are encouraged to stay indoors during the peak of the storm.

"Nor'easters aren't new for New England, but not usually in September, so we're taking extra preparations to connect with all our residents about this rare fall nor'easter," said Mayor Michelle Wu. "We urge residents and families to take all necessary precautions to stay indoors and safe during the storm. Thank you to all our City workers who have been collaborating to keep our neighborhoods safe and our City ready to respond."

The City of Boston is taking immediate action to provide relief to residents, families and visitors ahead of this coastal storm. Residents can sign up to receive updates in 11 languages through AlertBoston, the City's emergency mass notification system, by phone, text, or email. Residents and visitors are also encouraged to learn more about their flood risk at boston.gov/flood

Power outages can be reported online or by contacting Eversource through this link. Residents who use Eversource can sign up to get alerts by texting "REG" to 23129, report power outages by texting "OUT" to 23129, and checking status by texting "STAT" to 23129. Additional information is available on the Eversource webpage.

"Coastal storms can bring rapid changes in tides and weather, leading to flooding, downed trees, power outages and beach erosion," said Brooke Amendola, Director of Emergency Preparedness. "We are urging everyone in coastal and low-lying areas to prepare now. Clear your property of loose outdoor items, and limit travel during the storm. The actions you take today will help keep you, your family, and our first responders safe."

As a coastal city, Boston faces the increasing risk of coastal and stormwater flooding due to climate change. In 2025, the Office of Emergency Management shared Boston's updated preparations for extreme weather events, including long-term climate resilience plans and ongoing efforts to streamline emergency response operations across departments. With this shift, the City has emphasized empowering residents, supporting communities at greatest risk of flooding and other emergency events, and lowering the risk citywide through resilience efforts.

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"Ahead of this storm, it is critical to know your home or business' risk of flooding," said Brian Swett, Chief Climate Officer. "Due to the climate crisis and sea level rise, Boston is growing more vulnerable to severe weather and coastal flooding every year. For over a decade, the City of Boston has been working with our state and federal partners to protect our vulnerable neighborhoods from these threats, and we will be on high alert this week to ensure our residents stay safe."

"BWSC is planning for a long duration event, 72-96 hours," said Boston Water and Sewer Commission Chief of Operations Chase Berkeley. "While rain totals are not predicted to be overwhelming for our systems at this time, we will have additional staff and resources deployed throughout the weekend to handle flooding issues that may arise."

The City of Boston's Public Works Department has canceled its Zero Waste Drop-Off Day scheduled for Saturday, September 26, to protect the safety of residents and City staff. The event has been rescheduled for Saturday, November 21, at 315 Gardner St in West Roxbury (Millenium Park). Residents can find information at Boston.gov/Zero-Waste-Day.

Zero Waste Drop-Off Days allow residents to responsibly dispose of household chemicals, paint, textiles, propane tanks, electronics, light bulbs, and other materials that are not accepted as part of routine curbside trash collection. Residents are strongly encouraged to download the free Trash Day app, which includes a directory of hundreds of household items to help residents find the proper way to dispose of them, along with collection schedule reminders and updates.

BCYF centers will be open regular hours and available to support residents as needed. Boston Public Library locations are available for residents to get out of the storm during their regular hours on Friday, September 25 through Sunday, September 27.

The Parks and Recreation Department will monitor the storm and keep multiple crews on standby to handle any trees that may come down. The team will also be monitoring some of the flood-prone fields and parks for any impacts from the storm.

The City issued the following tips ahead of the storm:

• Review your evacuation zones and be prepared to evacuate if you live or work in a flood zone, hurricane evacuation zone, or an area that is prone to flooding.
• Prepare a disaster supply kit, including a flashlight, batteries, first aid supplies, and copies of your critical information if you need to evacuate. Add items to meet any specific household needs for children, parents, those with access and functional needs, and pets.
• Make a record or your personal property by taking photos or videos of your belongings and store them in a safe place.
• Make a family emergency plan and check-in with family, friends, and neighbors.
• Do not wade, walk, or swim in flood waters due to the risk of injury from debris, electrocution from downed wires, and exposure to harmful chemicals or pathogens potentially carried by the flood waters.
• Report downed trees, roadway flooding or sewer backups not caused by conditions in your home by downloading the 311 app or calling 311 (or 617-635-4500), the Mayor's 24/7 Constituent Service Hotline.
• Report downed power lines to 911
• Limit travel during the storm. If you have to go out, drive with caution.

Information and resources to support individuals experiencing homelessness:

• If you see a person experiencing homelessness or individuals out in the storm who appear immobile, disoriented, or underdressed for the weather, please call 911.
• The Boston Public Health Commission (BPHC) utilizes a city-wide network of emergency shelters, outreach providers, city agencies, and first responders to assist those in need of shelter.
• Boston Public Health Commission's emergency shelters are open 24 hours a day, seven days a week, and amnesty is in place this Friday through Sunday for those with nonviolent restrictions. Men can access shelter at the 112 Southampton Street Shelter, and women should go to the Woods Mullen Shelter at 794 Massachusetts Ave. BPHC and the City also work closely with other shelter providers to ensure that no client is without shelter, food, resources, and a warm respite from the cold.
• Shelters are available any time of day or night for those in need.
• During storms, BPHC street outreach teams keep their normal hours from 6:00 am to 7:00 pm and still help transport people to shelters, treatment, or home.

The Inspectional Services Department (ISD) asks you to inspect your site and take safety precautions to protect workers, neighboring properties, and the public.

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Before the storm arrives, please:

• Secure loose materials, tools, dumpsters, and equipment that could shift or become airborne.
• Check scaffolding, fencing, sidewalk protection, signs, and temporary structures. Secure or remove loose tarps and sheeting.
• Inspect roofs and elevated work areas for materials that could fall or blow into public areas.
• Protect electrical equipment and cords from rain and flooding.
• Check drainage and take steps to prevent water from collecting at excavations or spilling onto sidewalks.
• Keep sidewalks, exits, and other paths of egress clear and safe.
• Review the forecast with your crews and suspend outdoor work when conditions make it unsafe.

Due to the severity of the projected storm, no after-hours permits will be issued from Friday, September 25 through Sunday, September 27, for exterior work.

After the storm, ISD is instructing that all sites are inspected for damage before work resumes. A competent person should inspect scaffolding and any excavations affected by rain or flooding before workers use or enter them. OSHA requires excavation inspections after rainstorms and restricts work on scaffolds during storms or high winds unless specified safety conditions are met.

The City has been working to develop and implement climate resilience projects to address coastal flooding, stormwater management, and extreme heat. Recently, the City completed coastal resilience plans for all 47-miles of Boston's coastlines and has moved into implementation of critical projects across neighborhoods.

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