{"ok":true,"trend":{"id":296700,"platform":"mastodon","region":"global","key":"concern mounts over slow-moving, planetary-scale ‘kelvin’ wave heading for california","title":"Concern mounts over slow-moving, planetary-scale ‘Kelvin’ wave heading for California","url":"https://www.theguardian.com/us-news/2026/sep/28/california-kelvin-wave","first_seen":"2026-09-29T00:50:42.580404Z","last_seen":"2026-09-29T06:20:41.326282Z","last_rank":8,"peak_rank":8,"last_volume":67,"peak_volume":67,"seen_count":23,"score":78.6,"category_hint":null,"section":"environment","category":"oceans","summary":"Scientists are tracking a slow-moving, planetary-scale Kelvin wave heading toward the California coast, warning it could raise sea levels by up to a foot. The ocean phenomenon occurs as El Niño keeps warm water trapped along the coast, amplifying coastal flooding risks. Observers are voicing concern about what the wave could mean for shoreline communities already exposed to rising seas and storm-driven erosion.","why":"El Niño conditions are making this unusual ocean phenomenon a timely and worrying story for coastal communities and climate watchers","tone":"negative","entities":["California","El Niño","Kelvin wave","The Guardian"],"summarized_at":"2026-09-29T00:51:43.644887Z","meta":{"kind":"link","lang":"en","generic":0.02,"instance":"mastodon.social","provider":"The Guardian"},"nw":0.86,"promo":0.01,"kind":"news_event","importance":1.9,"hidden":false,"hide_reason":null,"judged_at":"2026-09-29T00:50:43.541169Z","title_en":"Giant Kelvin wave raises sea level fears for California coast","section_name":"Environment","category_name":"Oceans","timeline":[{"captured_at":"2026-09-29T00:50:42.580404Z","rank":8,"volume":67},{"captured_at":"2026-09-29T01:05:41.080738Z","rank":8,"volume":67},{"captured_at":"2026-09-29T01:20:42.108262Z","rank":8,"volume":67},{"captured_at":"2026-09-29T01:35:41.363439Z","rank":8,"volume":67},{"captured_at":"2026-09-29T01:50:42.885570Z","rank":8,"volume":67},{"captured_at":"2026-09-29T02:05:43.283505Z","rank":8,"volume":67},{"captured_at":"2026-09-29T02:20:42.393169Z","rank":8,"volume":67},{"captured_at":"2026-09-29T02:35:41.745813Z","rank":8,"volume":67},{"captured_at":"2026-09-29T02:50:43.685008Z","rank":8,"volume":67},{"captured_at":"2026-09-29T03:05:42.211695Z","rank":8,"volume":67},{"captured_at":"2026-09-29T03:20:43.287769Z","rank":8,"volume":67},{"captured_at":"2026-09-29T03:35:42.182477Z","rank":8,"volume":67},{"captured_at":"2026-09-29T03:50:41.882699Z","rank":8,"volume":67},{"captured_at":"2026-09-29T04:05:41.591163Z","rank":8,"volume":67},{"captured_at":"2026-09-29T04:20:42.482351Z","rank":8,"volume":67},{"captured_at":"2026-09-29T04:35:41.609755Z","rank":8,"volume":67},{"captured_at":"2026-09-29T04:50:43.083347Z","rank":8,"volume":67},{"captured_at":"2026-09-29T05:05:41.795752Z","rank":8,"volume":67},{"captured_at":"2026-09-29T05:20:42.088243Z","rank":8,"volume":67},{"captured_at":"2026-09-29T05:35:43.180668Z","rank":8,"volume":67},{"captured_at":"2026-09-29T05:50:42.792732Z","rank":8,"volume":67},{"captured_at":"2026-09-29T06:05:42.179264Z","rank":8,"volume":67},{"captured_at":"2026-09-29T06:20:41.326282Z","rank":8,"volume":67}],"posts":[{"platform":"mastodon","url":"https://www.theguardian.com/us-news/2026/sep/28/california-kelvin-wave","author":"The Guardian","title":"Concern mounts over slow-moving, planetary-scale ‘Kelvin’ wave heading for California","snippet":"The ocean phenomenon could raise sea levels by up to a foot as El Niño keeps warm water trapped along the coast","posted_at":"2026-09-28T11:00:33Z","likes":null}],"elsewhere":[{"id":229557,"platform":"news","region":"global","title":"Concern mounts over slow-moving, planetary-scale ‘Kelvin’ wave heading for California","last_rank":36,"last_seen":"2026-09-29T01:36:53.017123Z","summary":"Scientists and news outlets are raising alarms about a slow-moving, planetary-scale Kelvin wave in the Pacific Ocean that is heading toward the California coast. These massive underwater waves along the equator can redistribute warm water and influence weather patterns, and observers are watching closely for potential effects on coastal conditions and climate."}],"window":"7d"}}