El Niño threat to US coastal regions

Climate scientists are warning that a strengthening super El Niño event is expected to bring record-high sea levels, severe flooding, and destructive winter storms to the California coast and western US this year. The phenomenon is also prompting efforts to protect vulnerable marine ecosystems like Florida's coral reefs from ocean heating.

This is a long-running storyline that has developed over 14 days. The homepage highlights its most recent activity, so the outlet count there reflects the latest wave. The totals above cover the full run.