This blog post recaps a significant Pacific Gas and Electric outage that disrupted power for more than five thousand residents on the Tiburon Peninsula and parts of Mill Valley on April 2. It covers the timeline, neighborhood impacts, and the community’s response from a Marin County perspective.
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What happened on April 2: outages across the Tiburon Peninsula and Mill Valley
The power disruption hit 5,154 customers, mainly along the Tiburon Peninsula and nearby Mill Valley. Residents from downtown Tiburon to Belvedere Island took notice.
In Tiburon, 2,895 customers lost service. Another 1,122 in Belvedere were affected, and the rest spread across Marin neighborhoods. The event started with an alert at 12:23 p.m. Many wondered what caused the blackout and when power would return to their homes in Sausalito’s sister communities.
Timeline and scope
The outage began around noon on April 2. PG&E listed the cause as unknown and didn’t offer a restoration estimate at first.
By 1:31 p.m., PG&E’s maps showed big progress. All Belvedere customers had power, and all but three in Tiburon were back online.
Some Tiburon customers and neighborhoods further inland still waited. It was a patchwork return across Marin County’s most scenic stretches.
Residents along Greenwood Cove and Greenwood Bay drives remained without power, with restoration expected around 9 p.m. That timeline left central Tiburon and the waterfront corridor watching the clock as crews worked on those harder-to-reach pockets.
Ground-level observations from Marin locals
Residents reported dramatic on-the-ground effects that sparked talk across social feeds and neighborhood groups. One Tiburon resident, Adam Khan, described a “blue flash” and a cable dropping onto Tiburon Boulevard—a scene pointing to a line issue or fault. PG&E hadn’t publicly confirmed the cause.
Such stories show how outages disrupt life in a town used to reliable service, from neighborhoods near Corinthian Yacht Club to the broader Belvedere community’s routines.
The Ark, a local journalism outlet, positioned the event within its ongoing coverage of Tiburon and Belvedere’s neighborhoods. It encouraged readers to support local storytelling and journalism during times like these.
PG&E response and the restoration arc
The utility’s early communications described the incident with caution, noting an unknown root cause and little clarity on a restoration window. Some customers got automated calls predicting restoration by about 8:15 p.m., while others saw power return earlier or later than those estimates.
By mid-afternoon, PG&E’s published maps provided a clearer picture of where power had returned and where it remained out. Marin County residents in Tiburon, Belvedere, and Mill Valley used those updates to plan around meals, lighting, and essential devices.
Community timing and expectations
Across Tiburon’s corridors near Main Street and the San Francisco Bay edge, residents waited for updates to resume daily routines. The Belvedere and Tiburon waterfront zones saw shorter outage windows.
Inland Tiburon neighborhoods and the Green Cove/Bay areas faced a longer restoration timeline into the evening. The contrast between Belvedere’s quick restoration and Tiburon’s lingering pockets reminded homeowners that outages can be uneven, even in neighboring towns.
Impact by neighborhood and how Marin counties responds
In Marin, a power outage of this scale isn’t just a minor inconvenience; it reshapes weekend plans, dining, and small-business operations along the Sausalito to Corte Madera corridor. The Tiburon Peninsula, Belvedere, and Mill Valley each saw different restoration curves, reflecting varied feeder lines and access routes that crews must navigate from the Marin County Fairgrounds toward Paradise Drive and the Greenbrae stretch near Larkspur.
- Belvedere — All customers restored by early afternoon according to PG&E maps, letting residents return to power quickly.
- Tiburon — Most customers restored by mid-afternoon, with a few pockets along Greenwood Cove and Greenwood Bay drives waiting until around 9 p.m.
- Mill Valley — Affected areas included feeder regions that parallel Tiburon’s western neighborhoods. Crews mapped out the best routes for restoration.
What this outage means for Marin County and preparedness tips
Outages like this highlight the need for a household plan for extended power loss. For Marin County residents, paying extra attention to food storage, lighting, and battery backups becomes essential, especially for households with seniors, children, or medical devices.
Local leaders in Tiburon, Belvedere, and Mill Valley stress emergency preparedness as a community value. They encourage residents to stay informed through reliable sources and neighborhood associations.
Tips to stay ready
- Keep a small, portable battery pack or power bank for essential devices.
- Stock non-perishable foods and a manual can opener in a cool, dry place.
- Maintain a flashlight and fresh batteries in every entryway of your Marin home. Maybe you’re near Blackie’s Pasture in Mill Valley, or up Pico Boulevard in Tiburon—either way, it’s worth it.
- Charge medical devices ahead of time. Make sure you’ve got a plan for backup options if the power’s out for longer than expected.
Here is the source article for this story: PG&E power outage affects over 5,000 Tiburon Peninsula customers
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