A low pressure nor'easter underwent bombogenesis as it developed east of Nantucket on the 26th.  It then moved west toward Nantucket Sound, before heading eastward again back out to sea on the 27th.  Winds gusted to 60-90+ mph.  More than one-half million power outages were reported...495,000 in MA and 96,800 in RI. Schools were closed for multiple days, as it took a while to clean up the downed trees/wires and to restore power.

Marine High Wind in BOSTON HARBOR, ATLANTIC NORTH
From 27-OCT-21 04:33:00 to 27-OCT-21 06:00:00 (EST-5)
Location: BOSTON LIGHT
Magnitude: 67.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Around daybreak, Weatherflow mesonet stations recorded the following peak gusts:
77 mph at Deer Island (647 AM EDT or 547 AM EST); 71 mph at Squantum Point at 548 AM EDT; 66 mph at Pleasure Bay at 552 AM EDT; and 63 mph at Dread Ledge at 640 AM EDT.

Marine High Wind in NANTUCKET SOUND, ATLANTIC NORTH
From 27-OCT-21 02:36:00 to 27-OCT-21 03:20:00 (EST-5)
Location: GREAT POINT LIGHT
Magnitude: 66.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

At a NDBC buoy 1 mile northeast of Chatham, a gust to 76 mph was recorded at 354 AM EDT (254 AM EST).  At a NDBC buoy 11 miles south of Hyannis, a gust to 67 mph was recorded at 420 AM EDT.  A NOS-NWLON site for Nantucket recorded a gust to 64 mph at 336 AM EDT.

Marine High Wind in VINEYARD SOUND, ATLANTIC NORTH
From 27-OCT-21 03:11:00 to 27-OCT-21 04:11:00 (EST-5)
Location: WOODS HOLE
Magnitude: 69.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

At 411 AM EDT (311 AM EST) on the 27th, a Weatherflow mesonet site at Woods Hole measured a wind gust to 79 mph.

Marine High Wind in NARRAGANSETT BAY, ATLANTIC NORTH
From 27-OCT-21 04:44:00 to 27-OCT-21 06:04:00 (EST-5)
Location: BRISTOL HARBOR
Magnitude: 70.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The following peak wind gusts were observed on Narragansett Bay.
80 mph at Castle Island at 704 AM EDT (604 AM EST) - Weatherflow.
72 mph at Borden Flats Light at 512 AM EDT - NOS-PORTS.
68 mph at Halfway Rock at 544 AM EDT - Weatherflow.
64 mph at Conimicut Light at 612 AM EDT - NOS-PORTS.
62 mph at Sabin Point at 706 AM EDT - Weatherflow.

Marine High Wind in RHODE ISLAND SOUND, ATLANTIC NORTH
From 27-OCT-21 05:00:00 to 27-OCT-21 06:00:00 (EST-5)
Location: BUZZARDS BAY ENTRANCE TOWER
Magnitude: 67.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

At 6 AM EDT (5 AM EST) on the 27th, a NDBC buoy located 9 miles southeast of Little Compton measured a wind gust to 77 mph.

Marine High Wind in BLOCK ISLAND SOUND, ATLANTIC NORTH
From 27-OCT-21 05:30:00 to 27-OCT-21 06:30:00 (EST-5)
Location: POINT JUDITH LIGHT
Magnitude: 67.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

At 704 AM EDT (604 AM EST) on the 27th, a Weatherflow mesonet station at the tip of Point Judith recorded a wind gust to 77 mph.

Marine High Wind in MASSACHUSETTS BAY AND IPSWICH BAY, ATLANTIC NORTH
From 27-OCT-21 03:30:00 to 27-OCT-21 04:30:00 (EST-5)
Location: ROCKPORT
Magnitude: 69.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

At 459 AM EDT (359 AM EST) on the 27th, a Weatherflow mesonet site at Dog Bar Breakwater off of Gloucester recorded a wind gust to 79 mph.  At 450 AM EDT (350 AM EST), a NDBC buoy located 11 miles NNE of Scituate recorded a wind gust to 65 mph.