Pacific Marine Heatwave Could Trigger Months of Weather Chaos

A vast section of the Pacific Ocean is now far warmer than normal, creating a reservoir of heat capable of influencing weather well beyond the sea. Scientists are watching both its exceptional size and how long the warmth lasts.

The event does not guarantee one specific disaster. Instead, persistent ocean heat can reshape moisture, pressure and storm patterns across several seasons, raising the risk of overlapping extremes from the western Pacific to the United States.