Scientists Expect Kelvin Wave to Raise West Coast Sea Levels This Winter

Scientists Expect Kelvin Wave to Raise West Coast Sea Levels This Winter

Climat

Scientists say a Kelvin wave linked to the current El Niño is expected to raise sea levels by up to a foot along the California, Oregon and Washington coasts through the winter, increasing flood and erosion risks. Earlier reports warned that the warm-water Kelvin wave could combine with an unusually strong El Niño, prompting emergency officials to ready flood defenses and urging residents to prepare for higher tides. The same scientists have repeatedly projected that the wave could persist for several months, potentially intensifying coastal flooding and shoreline erosion across the West Coast.

Acteurs

Severine Fournier NASA Jet Propulsion Laboratory Nate Mantua NOAA Mike Jacox Southwest Fisheries Science Center Gavin Newsom California Coastal Commission Kate Huckelbridge

Lieux

South America U.S. West Coast California

Vérification des faits

Comment fonctionnent ces métriques
Verdict global: Preuves insuffisantes Confiance: 22% Affirmations: 1
Résumé

The claim that scientists said on October 3, 2026, a coastal Kelvin wave linked to El Niño could raise sea levels along California’s shoreline by up to twelve inches in the coming days has insufficient evidence. No claims were confirmed, partially confirmed, or refuted.

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Articles

3 octobre 2026
2 au total
What to know about the Kelvin wave raising the sea level along the West Coast
What to know about the Kelvin wave raising the sea level along the West Coast

PBS • 03 oct. 19h45

A Kelvin wave linked to the current El Niño is projected to lift sea levels by up to a foot along the California, Oregon and Washington coasts, potentially intensifying flooding and erosion risks during the coming months.

Crédibilité 72% Manip. 8% Centre
El Niño causes ocean phenomenon waves to raise California sea levels
El Niño causes ocean phenomenon waves to raise California sea levels

nypost.com • 03 oct. 02h12

Scientists say a coastal Kelvin wave linked to El Niño could lift sea levels along California’s shoreline by as much as twelve inches in the coming days, increasing flood and erosion risks.

Crédibilité 68% Manip. 30% Centre
30 septembre 2026
1 au total
California rushes to prepare for massive ‘Kelvin’ wave and predicted sea level rise
California rushes to prepare for massive ‘Kelvin’ wave and predicted sea level rise

The Guardian • 30 sept. 11h02

Scientists warn that a warm-water Kelvin wave could raise California's coastal waters by up to a foot and combine with an unusually strong El Niño, prompting emergency officials to ready flood defenses.

Crédibilité 68% Manip. 32% Centre
29 septembre 2026
1 au total
A 'Propagating Disturbance' Is Headed Toward California
A 'Propagating Disturbance' Is Headed Toward California

newser.com • 29 sept. 10h40

Scientists warn that a large Kelvin wave of warm Pacific water, intensified by a strong El Niño, could lift California's sea level by as much as a foot for several months.

Crédibilité 68% Manip. 12% Centre
28 septembre 2026
1 au total
Concern mounts over slow-moving, planetary-scale ‘Kelvin’ wave heading for California
Concern mounts over slow-moving, planetary-scale ‘Kelvin’ wave heading for California

The Guardian • 28 sept. 11h00

Scientists say a slow-moving Kelvin wave, amplified by a strong El Niño, could lift coastal water levels in California by as much as one foot through the winter, prompting state emergency preparations.

Crédibilité 78% Manip. 9% Centre

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