The Brief

Elevated sea levels are already rolling into Southern California waters, leading to coastal erosion and other damage. An El Niño-driven Kelvin wave is further exacerbating conditions along the coast. And Tropical Storm Rachel could bring rain across the region this weekend.

But all of this is probably just the beginning of a very wet Southern California rainy season.

Authorities have been sounding the alarm.

“ Residents need to hear this information, and they need to hear it repeatedly, enough times so that they too can act,” L.A. County Supervisor Hilda Solis said during a recent presentation about El Niño preparations.

Heavy rain, flooding and debris flows can pose serious threats to homes and infrastructure. Officials and climate scientists say the best way to protect yourself and your property is to make preparations now, well before peak El Niño conditions arrive.

Here’s what you can do to prepare your home.

Preparing your property

One of the first steps to getting your home ready for El Niño is to understand how vulnerable it is to flooding when heavy rain or surging surf hits your neighborhood.

“It really is incumbent upon people to pause, evaluate where they live, where they travel and to really think about what would happen if those areas were flooded out,” said Kerjon Lee, spokesperson for the L.A. County Department of Public Works. “ Knowing your community, your neighborhood, where mud and debris flow might occur — is really critical.”

You can review your risks using California’s MyHazard tool, which allows you to input your address and cycle through potential risks.

Floodwaters and the landscape

Knowing if your property or neighborhood has flooded in the past can be helpful, and you can learn a lot from simply looking at the landscape in and around your home.

If your house is at the bottom of a hillside, for example, it’s probably more susceptible to debris flows, especially if the slope burned in a wildfire in the last several years. Burn scars are especially vulnerable to landslides and flooding because they lack the established vegetation that helps hold soil in place and absorbs water during heavy rain.

Other landmarks to look out for near your property are creeks, canals, drainage channels, debris basins and even low-lying roadways.

It’s also a good idea to understand how rainwater flows onto your property, where it collects and how it leaves. The goal should be for water to flow through your property safely and efficiently, without causing damage to neighbors.

That means clearing debris and overgrowth from gutters and drains now, before extreme weather hits.

Officials are also urging residents to report clogged or blocked storm drains to their local public works department.

If you live in L.A. County and are concerned about potential mud or debris flows, you can contact the county’s Department of Public Works for free advice.

Sandbags

If your property is at high risk of flooding, consider stockpiling sandbags. Many fire departments and public works departments offer sandbags to their local communities.

You can check sandbag distribution locations and availability here:

• L.A. County
• Orange County 
• Ventura County
• Santa Barbara County
• Riverside County
• San Bernardino County

Be prepared to fill the sandbags yourself, as most places only offer empty ones. Never fill sandbags with beach sand or empty used ones onto the beach.

Once you have sandbags, make sure you know how to use them properly.

Here are a few tips:

• Only fill sandbags half-full, not all the way full.
• Do not place sandbags directly against the outer wall of a building as wet bags can create added pressure on the foundation. 
• Sandbags should be placed parallel to the direction of water flow.
• The open ends of sandbags should be folded underneath and face upstream so they aren’t forced open as water flows around them.
• Sandbags should be used to redirect floodwater rather than create a dam or block its path. 
• Sandbags can be used to protect doorways, but to do so, they should have a waterproof layer like heavy plastic or waterproof canvas placed behind them. 

This diagram shows the proper way to place sandbags so that they are parallel to the flow of water or debris and redirect it away from structures.

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Los Angeles County Department of Public Works

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Local agencies offer thorough instructions on how to use sandbags online. L.A. County Public Works offers a breakdown in its Homeowners Guide.

Sandbags and other materials for protecting your home, including plywood, lumber or plastic sheeting, should be stored in a dry location away from potential flooding.

Other flood considerations

If valuables could be damaged or destroyed by floodwaters, consider moving them away from the ground or, if possible, to upper floors. Keep important documents in waterproof containers or sealed bags, and make sure to create digital copies.

Another recommendation is to check trees on your property for dead branches, cracks or other issues that might make them unstable, especially those that hang over structures. If you’re unsure or concerned about your trees, you can hire an arborist to inspect them. To trim or remove them, you will likely have to hire a professional. Cities and counties generally do not handle tree maintenance on private property.

Finally, consider purchasing flood insurance if your home is at risk — and do so as early as possible.

Standard homeowners insurance policies typically do not cover flood damage, and new flood insurance plans can take at least 30 days to kick in. If you want to consider signing up for a plan, the National Flood Insurance Program is a good place to start.

If floodwaters do enter your home, public health officials recommend drying wet areas as quickly as possible, as saturation can lead to mold. If mold does take hold, clean the area using a disinfectant. Also, wear gloves and a mask to protect your skin and lungs and throw away moldy items that can’t be cleaned.

Jordan Corral had to do something.

It was late 2024, during a historically dry start to the winter. But the winter before that had been historically wet. This kind of “weather whiplash” is growing more common with a warming climate, research is finding. And it meant the hillsides of the Santa Monica Mountains were overgrown with invasive and highly flammable plants, such as black mustard, castor bean and fennel.

So Corral got to work. Alongside mentor Bill Neill, the president of the Santa Monica Mountains chapter of the California Native Plant Society, Corral pulled together a group of volunteers to pull out invasive plants.

Then came the Palisades Fire. Corral and his wife, Sara Marti, lost their apartment and had to start over. They’ve finally relocated to an apartment that survived the fire. Meanwhile, through their work for the nonprofit Resilient Palisades, Corral has launched a subgroup focused on invasive plant removal.

“The team is working on wildfire recovery while trying to mitigate the next wildfire simultaneously,” Marti said by phone on a day when Corral was out working with volunteers in Temescal Canyon Gateway Park.

Now, Marti said, their effort to heal the land has become a part of their own recovery journey.

“Being a part of the recovery has played an enormous part of personal healing,” she said. “It's meditative while you know that you're also making a huge difference, protecting the nearby neighborhoods.”

A half dozen or so volunteers, including Corral and Marti, have been regularly going to the park to remove invasive species, which choke out native plants and grow into dense, dry vegetation that can make fires more intense. They’ve also worked with local high schools and youth groups.

Now, they’re racing to get as many invasive species removed as possible, while at the same time planting as many native seeds as they can, ahead of a potentially very wet winter driven by El Niño. If the rain is as intense as forecasters are predicting, it could help invasive species flourish further.

Sara G. Marti, left, and Jordan Corral lost their apartment in the Palisades Fire and are leaders in the nonprofit group Resilient Palisades.

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Courtesy Sara G. Marti

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The effort has been boosted by a recent $24,000 grant from UCLA’s Philanthropy as Civic Engagement Course. The money will help hire expert field assistants and buy safety gear, among other things. Corral and Marti hope the effort can become sustained.

“It's not a one-and-done thing,” Marti said. “Invasive plants are going to continue coming back. … So we're really just trying to stay ahead of it as much as we can.”

In some ways, Marti said, the effort reflects their own journey to recover after losing their apartment in the fire.

“ We're probably never going to win, but we can't give up,” she said. “We have to keep trying.”

The city of Los Angeles will establish a fund to clean the 6th Street Bridge, where trash and other waste often pile up on pedestrian walkways. 

In a unanimous vote on Tuesday, the City Council approved the establishment of the fund, which will allow the city to accept and retain donations from private entities “to preserve this iconic landmark,” Councilmember Ysabel Jurado said. “Our commitment to this bridge has to ensure its longevity.”

Funds will go toward trash and bulky item pickup, graffiti abatement and other beautification services for the bridge. 

The dedicated fund follows the city’s hiring of Pasadena-based engineering firm Tetra Tech to restore the lighting of the bridge, which has been plagued by copper wire theft since its opening in 2022. 

The outages have frustrated residents and commuters who use the bridge to walk, run, bike and drive between downtown L.A. and the Eastside. 

This move also comes as residents in Boyle Heights and the Arts District grapple with how the 12-acre park beneath the bridge will be maintained once it opens in 2027. 

Community members have raised concerns about the possibility of homeless encampments forming at the park, as well as graffiti and whether copper wire theft from the bridge could affect the park’s safety.

Meanwhile, groups like the Arts District Little Tokyo Neighborhood Council, Arts District Los Angeles and the Boyle Heights 5K Run/Walk are filling gaps with an upcoming bridge cleanup in collaboration with Jurado’s office. 

The post City of LA will establish a fund to clean the 6th Street Bridge appeared first on LA Local.

This story first appeared on Long Beach Post.

After weeks of stifling heat, Long Beach is preparing for a different kind of weather: powerful southerly swells, followed by rain showers as early as Saturday, all courtesy of a hurricane expected to make landfall in California this weekend.

Waves arrived along the Peninsula on Wednesday — sending water onto the boardwalk and side streets — and returned Thursday, slapping against the already weakened bulkhead that serves as the last line of defense for a number of beach homes.

With a coastal advisory in effect through Friday, experts say 3-to-6-foot waves are being carried to shore by tides reaching 7 feet high and leaving behind dangerous rip currents.

City crews were busy the past several days stowing hundreds of sandbags beneath the boardwalk as a second barrier, with emergency pumps ready. The work is complicated by the short window between recurring high tides and a limited supply of sand.

“We’re just basically trying to create a buffer between that impact zone, the energy of the impact, and that wall,” said Marine Safety Chief Gonzalo Medina. “I do expect that we will see some activity and some water intrusion out onto the streets, certainly the boardwalk.”

Marine and fire crews are expected to stand by overnight to monitor water levels and assist residents.

The area has already been tested this year, taking damage from Hurricane Marie over Labor Day weekend, followed by Hurricane Polo in late September. The National Weather Service says this week’s flooding will probably exceed Polo’s but fall short of Marie’s.

Kristan Lund, a meteorologist with the NWS office in Oxnard, said swells are forecast to peak Thursday through Saturday during the morning and evening tides.

It’s another example of an abnormal season, Lund said, where tides are running 1 to 2 feet higher than usual, well “above the astronomical tide charts.”

Waves are being charged north by Hurricane Rachel, which is expected to weaken considerably before it makes landfall 100 miles south of San Diego early Sunday and reaches the California-New Mexico border by Monday.

In comparison to the 2023 tropical storm Hillary, which wrought widespread flooding that necessitated rescues in desert towns, Lund said this storm is farther south and entering at a more horizontal angle toward New Mexico.

But it’s still “hard to tell for right now” how the storm will progress, Lund said, saying higher-resolution models should be released Friday or Saturday that more accurately predict its path.

Forecasters say the system should still deliver heavy rain, gusty winds, dangerous surf and localized flooding, with hazardous zones stretching as far north as Orange County.

In Long Beach, rain could start as early as Saturday morning and linger through Tuesday night, with the best chance from Sunday morning through Monday evening.

Totals are expected to be modest, roughly a quarter to three-quarters of an inch, with a small chance of thunderstorms. South-to-west gusts of 20 to 35 mph are likely from Saturday through Monday, adding the risk of fallen trees and power lines.

“The wind would actually be a lot more problematic than the rain,” Medina said. “You have a lot of trees already that we’re seeing, just from this heat, that have fallen. This heat has weakened the structure of a lot of these trees. And now you bring wind into the equation. The trees bring down power lines, and it gets complicated after that.”

Why is this happening?

The storm arrives at the tail end of a weekslong heat wave that experts say is a consequence of climate change compounded by El Niño, which has kept nights unusually warm and humid.

“At night it’s not cooling off as much, and that ends up being pretty consequential,” said Daniel Swain, a climate scientist with UC Agriculture and Natural Resources. “Because obviously the night is when people would usually cool down.”

El Niño also helps explain the high number of hurricanes and storm systems like Rachel and its predecessors, Swain said. “El Niño also increases hurricane activity in the eastern Pacific Ocean,” Swain said, describing a season that ranks as either the most or second most active on record depending on the metric.

The result has been repeated surges of tropical moisture toward Southern California, leaving humidity high.

Ocean temperatures off the coast are now about 7 to 8 degrees above average, and the Pacific from central Baja California to Southern California is at record warmth in data going back to 1982. Warm water expands, and a Kelvin wave, an underwater ripple that becomes “coastally trapped” as it reaches the Americas, can add 6 to 12 inches to background sea levels, potentially for months.

Swain said harbor masters and fire departments in coastal Los Angeles County have been calling him. “They’re like, ‘I’ve never seen water this high,'” he said, adding one told him it was the highest in 30 years, on a day that wasn’t supposed to be a particularly high tide.

And he expects it to get worse. “That’s something that’s actually going to get worse as we go into November and December.”

More Kelvin waves are expected this season, and scientists worry about one coinciding with a king tide, a major storm or both. The Climate Prediction Center is forecasting a wetter-than-average winter for Southern California, and Swain sees little doubt.

“All signs continue to point toward a very wet winter in coastal Southern California,” he said. “I would be very surprised if we did not have that.”

For now, the city is focused on the week ahead. Sandbag distribution sites open Thursday at 10 a.m. at Fire Stations 7, 12, 13 and 14, and at the Claremont Beach parking lot, through Tuesday.

Empty sandbags are available at all LBFD neighborhood Fire Stations. While the Claremont Beach Parking Lot (5400 E. Ocean Blvd.) site is offering sand and sandbags through Tuesday. Sand and sandbags are also available at the locations listed below starting Thursday, Oct. 8, at 10 a.m.:

• Fire Station 7 – 2295 Elm St.
• Fire Station 12 – 1199 E. Artesia Blvd.
• Fire Station 13 – 2475 Adriatic Ave.
• Fire Station 14 – 5200 E. Eliot St.

Find more ways to be prepared at LBPost.com/elnino