How could the coastal flooding risks affect the Pacific Coast Highway?
Coastal flooding and erosion could threaten the Pacific Coast Highway infrastructure. The combination of Hurricane Rachel and an El Niño-fueled Kelvin wave is increasing the risk of significant coastal flooding and beach erosion along the Southern California coastline. This threat is heightened by expected high tides, which are forecast to be 1 foot to 1.5 feet above normal. Because the Pacific Coast Highway is known to be physically impacted by these environmental threats, the severe coastal conditions could lead to damage to the infrastructure.
- Effect
- Mild negative
- How direct
- 2 steps, all reported
- When
- Within weeks
- The story
- No new developments lately
How it reaches Pacific Coast Highway
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Forecasters warn that Hurricane Rachel, combined with the arrival of a Kelvin wave, is increasing the risk of coastal flooding and widespread rain in Southern California. The risk of coastal flooding is expected to peak on Sunday, and significant beach erosion is anticipated.
The full event1independent outlet -
Hurricane Rachel, combined with a Kelvin wave feature of El Niño, is expected to raise the risk of coastal flooding and significant beach erosion across Southern California. The coastline from Malibu to Ventura is specifically noted as being particularly at risk.
1 report connects these two. Brind only summarizes; follow a link to read the reporting itself.
- latimes.com Thursday
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geographic and cultural region
Everything about Southern California -
The Pacific Coast Highway is known to be physically impacted by the environmental threats affecting the Malibu coastal zone. The convergence of high tides, strong rip currents, and coastal flooding increases the potential for physical damage to this critical transitway.
1 report connects these two. Brind only summarizes; follow a link to read the reporting itself.
- latimes.com Thursday
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transitway station along the Harbor Freeway in Carson, California, United States
Everything about Pacific Coast Highway
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The facts so far
As reported. Each one links to where it comes from.
- The Kelvin wave can raise sea levels by 6 to 12 inches.latimes.com
- Tides in Southern California are expected to be 1 foot to 1.5 feet above what would ordinarily be expected.latimes.com
- Gusty conditions ahead Sunday are expected to be the windiest day, with widespread south-to-west winds between 20 to 35 mph gusts.latimes.com
- There is a 70% to 90% chance that rain will fall at some point between Saturday and Tuesday in L.A. and Ventura counties.latimes.com
Why it matters
The Pacific Coast Highway is a vital piece of infrastructure for Southern California, serving as a major transitway. Any physical damage resulting from coastal flooding or erosion could disrupt regional travel and commerce, requiring costly repairs and potentially leading to closures.
This event is part of a larger pattern driven by an unusually active, El Niño-fueled hurricane season. Scientists note that the rise in sea levels due to human-caused climate change, combined with these powerful climate patterns, is increasing the overall vulnerability of California's coastline to destructive conditions.
What we don't know yet
- How will the final track and intensity of Hurricane Rachel affect the severity of the coastal flooding?
- What specific sections of the Pacific Coast Highway are most vulnerable to erosion and flooding?
What would change this answer
— Other considerations
Beyond this explainer
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About Storm Surge
How does the expected storm surge, combined with the high tides and Kelvin wave, specifically increase the risk of damage to the Pacific Coast Highway infrastructure?
Explore Storm Surge
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Who else could feel it
Other possible ripples from the same event.
- Southern CaliforniaLikelyCoastal flooding and erosion risks threaten Southern California's coastline.
- city councilPossibleMalibu city council may need to coordinate emergency responses to coastal flooding risks
- Southern California Gas CompanyPossibleSouthern California Gas Company may face higher repair costs due to increased risk of gas main ruptures
- California Coastal CommissionPossibleCoastal flooding risks may trigger regulatory review and mandates from the California Coastal Commission.
- Los Angeles CountyPossibleLos Angeles County may face increased emergency response demands from coastal flooding risks.
Reporting
- latimes.comThursday
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Brind's analysis is written by AI from the reporting linked above and can be wrong. This explainer is a possibility worth considering, not a forecast: steps marked as Brind's reasoning are not stated in the reporting. It is not investment advice; do your own research.