Indian Ocean Dipole and El Niño Could Bring Wet Winter to California
Indian Ocean Dipole and El Niño Could Bring Wet Winter to California
US · Published Aug 14, 2026
California may experience a wetter and snowier winter due to the combined effects of a strengthening El Niño and a positive Indian Ocean Dipole (IOD).
El Niño, characterized by unusually warm waters in the central and eastern Pacific, is already influencing atmospheric circulation and strengthening the Pacific jet stream, which directs moisture toward the western United States.

Impact & Risks

The combined effects of El Niño and the positive IOD could result in increased precipitation across California, raising the risk of flooding in low-lying areas and heavy snowfall in higher elevations. While this may alleviate drought conditions, it could also lead to hazardous travel conditions, landslides, and infrastructure strain. Seasonal guidance suggests enhanced precipitation across the Southwest and broader southern United States, with potential impacts extending to Texas, the Gulf Coast, and the East Coast. However, the extent of snowfall will depend on temperatures and storm dynamics. (Source: USA Today)

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