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Why did four whales wash up in San Francisco Bay in a week and a half?

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Why did four whales wash up in San Francisco Bay in a week and a half?


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The juvenile minke whale had been spotted swimming around San Francisco Bay for nearly a week by the time she beached herself off the coast of Emeryville on April 8. Scientists had thought she seemed healthy, but after an examination, they determined she was acting abnormally and had to be euthanized due to illness.

It was the fourth whale death in the San Francisco Bay in a week and a half. The other three were gray whales, the first of which—a 36-foot-long female—washed up at Black Sands Beach in the Marin Headlands on March 30. Its cause of death remains unknown.

On April 2, a deceased adult male gray whale was found floating east of Angel Island; its cause of death is also not known, according to the Marine Mammal Center. Then, a subadult male gray whale washed ashore at Fort Point Rock Beach near the Golden Gate Bridge in San Francisco on April 4, and scientists determined that it likely died due to a vessel strike, according to the mammal center.

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Taken together, the deaths have raised the specter of past “unusual mortality events” that caused whales to die in higher-than-normal numbers.

“This is unusual,” said Kathi George, director of Cetacean Conservation Biology at the Marine Mammal Center in Sausalito. “It takes me back to several years ago when we did have a large number of strandings happen at the same time.”

While the unusually high number of whales beaching in such a short span is abnormal, the number of whales who have died around the bay for the year has remained in line with typical levels, scientists say.

“This is the normal time of year when gray whales are doing their northward migration from Mexico up to Alaska, so it’s not uncommon for us to have gray whales in and around San Francisco Bay in April and May each year,” said Moe Flannery, who leads the marine mammal necropsy team at the California Academy of Sciences.

“Although they seem high because they’re concentrated into a short period of time, the numbers of dead and stranded are not any different than the recent previous years.”

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Whales can die for “a number of reasons”—from diseases to malnutrition to vessel strikes, George said.

“It’s coincidental that everything happened in a week and a half, but there are a lot of whales out there right now, and some of their physical condition that they’re in when they arrive in the bay may make them more susceptible to human impacts if they’re not as healthy,” she said.

Scientists began observing whales entering the San Francisco Bay around 2016 as they completed their annual migration between Mexico and the sub-Arctic, George said. The whales do not feed while they are in their breeding grounds in Mexico, and expend a lot of energy mating, nursing babies and giving birth before facing a long journey back north to their feeding grounds, she added.

Because of this energy expenditure, scientists have seen the gray whales attempt to feed in new locations—including San Francisco Bay, George said. Their increased appearance in the bay could also potentially be explained as whales seeking a place to rest before continuing the migration, or a reaction to climate change, warming ocean temperatures and prey availability.

The Marine Mammal Center has tracked at least 18 individual whales swimming in the bay this year, and sightings of gray whales have been reported almost every day since mid-March, George said. The majority of the whale sightings have been reported east of Angel Island, said Giancarlo Rulli, the associate director of public relations for the Marine Mammal Center.

Between 2019 and 2023, gray whales were dying in much higher numbers due to an unusual mortality event, which was declared by the National Oceanic and Atmospheric Administration Fisheries. Gray whales lost more than 40% of their population in four years, Rulli said. During this time, there were 347 gray whale strandings in the United States, according to NOAA.

“These whales basically left the Arctic with a half tank,” Rulli said. “The food sources that they were normally accustomed to eating that were highly nutritious for this massive, 10,000–12,000-mile journey, had moved farther away due to climate change, and as a result, these whales were left to forage on food matter that was much less nutritious.”

Between January and April 2019, which was the first year of the unusual mortality event, 34 dead gray whales washed up on California’s coast, Flannery said. Seven have so far this year.

George said that whether the recent deaths could be the start of an unusual mortality event is “still under discussion and review,” adding that the data collected from these strandings will help scientists understand “the bigger picture of what’s happening.”

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“We’re not there yet,” she said, adding that scientists have to look at their migratory range holistically.

Whales will continue to appear in the bay through mid-May as they continue their migration north, George said.

Flannery added that anyone using the water “needs to be more aware of the animals that are sharing that environment.”

2025 MediaNews Group, Inc. Distributed by Tribune Content Agency, LLC.

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Why did four whales wash up in San Francisco Bay in a week and a half? (2025, April 21)
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San Francisco, CA

Sam Smith’s San Francisco Residency Charts New Course for the Castro

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Sam Smith’s San Francisco Residency Charts New Course for the Castro


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Sam Smith has kicked off his residency at the Castro Theatre in San Francisco, with the singer’s 20-date stint helping to officially usher in a new era for the historic landmark.

First erected in 1922, the Castro closed in 2024 for a reported $41 million renovation project. But the century-old Spanish-style Baroque theatre is open for business — and music — once again, with its gilded ceiling and ornamental walls restored to its original design, while seating is now reconfigurable for different events, including 650 seats that can be removed to create more standing room space (like for Smith’s concert). More importantly, city officials hope the re-opening of the Castro Theatre will also help revive the predominantly queer neighborhood it sits in, which shares a name with the venerable venue.

“Do you guys realize how special this street is?” Smith asked the sold-out crowd, during night two of their residency last week. “I grew up in a village in the middle of f-ckin’ nowhere,” they shared. “I was the only gay in the village and yes I was very dramatic about it as well,” they added with a laugh.

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“There is nothing like this street and nothing like the Castro and the community here,” Smith said. “I’ll never forget coming here when I was 20 years old, so reopening this theater now is such an honor.”

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Tickets to Smith’s Castro residency quickly sold out when the shows were first announced but you can still find stubs on sites like StubHub, Vivid Seats and SeatGeek. New users can use the promo code THR30 to save $30 on orders of $300 and up at VividSeats.com. SeatGeek customers can use promo code HOLLYWOOD10 to save $10 at SeatGeek.com.

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Smith’s San Francisco stint follows their “To Be Free: New York City,” residency which took place last fall at Brooklyn’s historic Warsaw club. Other artists set to play at the Castro this spring include Father John Misty, José González, Santigold and Lucy Dacus. The Castro will also help celebrate the 50th anniversary of the LGBTQ-themed Frameline Film Festival this June.

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Smith’s residency runs until March 14.

According to tourism officials and local businesses, Smith’s new Castro residency and the reopening of the theatre has already helped to bring in a number of new visitors to the area. Mat Schuster, the executive chef and owner of long-time neighborhood fixture, Canela, says business has been “very busy” in the last few weeks, crediting Smith’s show with bringing out new diners to the Spanish restaurant, which has been on Market Street since 2011. Other local hotspots like wine bar Bar49, the San Francisco outpost of Hi Tops, and the women’s sports bar, Rikki’s (named after Gay Games Federation founder Rikki Streicher), were all packed on a recent evening following Smith’s Castro concert.

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According to San Francisco Tourism, the reopening of The Castro Theatre is poised to deliver “meaningful economic gains” to the surrounding neighborhood, which some stats estimating that the venue will draw more than 200,000 visitors annually.

With the Castro Theatre now open again, local officials are looking ahead to other upcoming celebrations, including a planned reimagining of the Castro and Market Street intersection into The Memorial at Harvey Milk Plaza, honoring the first openly gay elected official in California (and the inspiration for the 2009 Sean Penn film). Milk’s legacy is already enshrined at the San Francisco airport of course, with terminal 1 at SFO renamed as the “Harvey Milk Terminal;” the new memorial is scheduled to be completed by 2028. The annual Castro Street Fair, meantime, a community street celebration founded by Harvey Milk in 1974, will take place on the first weekend of October.

The reopening of the Castro comes amidst a busy few months for San Francisco, which recently saw a number of athletes and celebrities in town for the Super Bowl. Steph Curry’s new speakeasy, The Eighth Rule, was among the hotspots over the big game weekend and the basketball star’s bourbon-forward bar continues to be a hot reservation in the city. Opened in the fall, the bar is tucked away in a nondescript hallway inside the Westin St. Francis hotel in Union Square, offering an intimate and exclusive setting for the Golden State Warriors point guard’s Gentleman’s Cut Bourbon, which can be ordered on its own or as part of a six-course omakase-style cocktail tasting (we loved the clarified coconut milk punch and the truffle-vanilla whiskey sour). Of course, guests can also order cocktails a la carte, choosing from different bourbons and whiskeys, plus a full selection of other spirits.

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Next door to The Eighth Rule is Bourbon Steak San Francisco, the latest outpost of Chef Michael Mina’s award-winning steakhouse. The restaurant marks the celebrity chef’s return to the Westin St. Francis, where he opened his first eponymous restaurant in 2004. In addition to its selection of steaks, seafood and caviar offerings (like Mina’s famous “caviar twinkee”), this Bourbon Steak outpost offers a family-style dining experience for six people, available through advance reservations. This is the only Bourbon Steak location to offer this communal table format.

New this month is the highly-anticipated opening of JouJou, an elevated French brasserie concept from the owners of the two Michelin-starred Lazy Bear. Located in the city’s Design District, JouJou is poised to be the next celebrity hangout, with its ornate dining room and marble-topped counters setting the scene for steak frites and star sightings alike. As chef David Barzelay told the San Francisco Chronicle when asked about the inspiration for JouJou: “It always feels like you’re just in a place where it’s happening.”



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San Francisco, Oakland report warmest February morning on record

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San Francisco, Oakland report warmest February morning on record



Saturday morning in the Bay Area was muggy and mild, if not warm. Temperatures only cooled down to the upper 50s to low 60s across much of the Bay Area – five to 15 degrees above average for late winter.

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For San Francisco and Oakland, it was a record warm start to the last day of the month. With temperatures only dipping down to 62 in San Francisco, it was the warmest morning in recorded history during the month of February, and those records go back to 1875. The old record was 61° in 1985. 

Oakland’s old record was also in 1985, when the low was 60°. Now Oakland’s new record for warmest February morning was set on Saturday, with a low of 61. It was also extremely muggy, with dew points in the upper 50s and humidity over 90%.

Why? It mostly has to do with the extremely warm blob of water sitting off the Bay Area’s coast. It’s technically called a “Marine Heatwave” and the one we are currently dealing with began in May 2025.

Normally this time of year, ocean temperatures are near 53 degrees – but it was about 57 near the Golden Gate Bridge as of Saturday morning.

Warmer ocean water warms up the air above it, and then winds carry the warmer air over land and warms us up. The warmer water also increases evaporation, raising moisture content in the air (aka humidity).

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So now you know, you can blame the warm blob of ocean water for the reason it was so muggy.



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Sunset Night Market makes official return to San Francisco

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Sunset Night Market makes official return to San Francisco




Sunset Night Market makes official return to San Francisco – CBS San Francisco

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