Greenwich storm power outage update: what happened and what to check next

What happened

National Weather Service local storm reports documented several Saturday evening storm impacts near Greenwich and lower Fairfield County: a 45 mph marine thunderstorm wind report in Stamford at 8:15 PM, a public report of a large tree down near Old Greenwich at 8:35 PM, and a 51 mph wind report at Bridgeport Airport at 8:54 PM.

That storm damage was only part of the outage story. CT Insider reported that an American flag blew loose near the WWE building on Washington Boulevard in Stamford and became tangled in an electrical transmission structure. The article, citing Eversource spokesperson Kaitlyn Woods, said about 5,000 Stamford customers initially lost power Saturday night, with about 3,000 restored within 20 minutes.

The larger Greenwich outage came Sunday afternoon. CT Insider reported that while crews were working around 1 PM Sunday, the flag shifted, made contact with an energized line, and caused a line trip affecting more than 20,000 Greenwich customers. WFSB also reported that the flag/transmission-line issue caused tens of thousands of Greenwich outages Sunday afternoon.

Where things stood late Sunday night

Eversource map data generated at Sunday, June 7, 2026, 11:43 PM EDT showed Greenwich with 242 customers affected out of 28,399 served, or 0.85%. The statewide Connecticut row showed 640 affected customers out of 1,311,326 served. Eversource says the map updates approximately every 15–30 minutes, so the live count can change quickly.

The Town of Greenwich Alert Center showed no active alerts when checked late Sunday night. That does not mean every road, wire, or neighborhood condition is safe; it only means there was no active alert posted in that Town alert module at the check.

What Greenwich households should do now

• Check Eversource first. Use the Eversource outage map or outage-status tools for the live restoration picture at your address.
• Report your outage if needed. Eversource says many outages can be detected, but customer reports may help identify problems sooner.
• Do not go near wires or blocked utility areas. Call 911 for immediate hazards such as downed or sparking wires, fire, medical needs, or suspected carbon monoxide exposure.
• Use generator caution. CDC guidance warns that generators, grills, and fuel-burning devices can produce carbon monoxide; do not run them indoors, in garages, or near open windows, doors, or vents.
• Keep fridge/freezer doors closed where possible. Ready.gov’s outage guidance starts with keeping refrigerators and freezers closed to slow food spoilage.
• Recheck Monday routines tonight. If your household depends on powered medical devices, garage access, Wi-Fi, sump pumps, refrigeration, or school/work devices, make a backup plan before bedtime.

Weather next

The National Weather Service Greenwich point forecast generated late Sunday night called for mostly cloudy conditions overnight, sunny weather Monday, and clear conditions Monday night. Those conditions may be better for outdoor work, but they do not remove street-by-street hazards from trees, limbs, or utility work.

Sources checked

• Eversource outage map — Greenwich customer-outage count and statewide count checked late Sunday night.
• Eversource outages and storms — Outage reporting, outage alerts, map, restoration-process, and preparedness starting point.
• CT Insider — Eversource-attributed explanation of the loose flag, Saturday night outage, and Sunday line trip affecting Greenwich.
• WFSB — Separate local report on the American flag/transmission-line outage and large Sunday afternoon impact.
• National Weather Service local storm reports — Saturday evening wind and storm-damage reports, including Stamford wind and an Old Greenwich tree-down report.
• National Weather Service Greenwich forecast — Current forecast generated Sunday afternoon.
• Town of Greenwich Alert Center — Checked for active municipal alerts.
• Ready.gov power outages — Federal outage-preparedness guidance.
• CDC carbon monoxide basics — Generator and fuel-burning-device safety background.

FAQs

How many Greenwich Eversource customers were still without power late Sunday night?

At the Greenwich Insider check around 11:43 PM EDT on June 7, Eversource’s outage map data listed 242 Greenwich customers affected out of 28,399 served. The number is volatile and should be rechecked on the Eversource map.

Was this only from Saturday night’s storm?

No. Saturday night storms caused tree and wire damage, and local reports citing Eversource also described a loose American flag tangled in a Stamford transmission structure. During Sunday repair work, the flag reportedly shifted and triggered a second, larger outage affecting Greenwich customers.

Where should residents check first?

Start with Eversource for outage reporting, outage status, and restoration updates; use Town of Greenwich alerts for municipal instructions; and call 911 for immediate hazards such as downed or sparking wires, fire, medical needs, or suspected carbon monoxide exposure.