San Francisco Oakland San Jose, CA, September 1, 2026 — Forecasters are predicting a “very strong” El Niño event is highly likely to impact the San Francisco-Oakland-San Jose Bay Area during the upcoming fall and winter seasons. The probability of this occurrence stands at 90%, according to current predictions.

This anticipated El Niño weather pattern could bring substantial changes to the region’s climate. Forecasters suggest that residents and local authorities should prepare for a range of potential impacts. These include the possibility of significantly increased rainfall, which can strain existing infrastructure and natural landscapes.

Beyond heavy precipitation, the predicted El Niño also raises concerns about coastal flooding. Elevated sea levels, even if temporary, combined with storm surges could lead to inundation in coastal communities. Furthermore, the combination of intense rainfall and saturated ground increases the risk of mudslides, particularly in hilly or fire-prone areas.

In response to these forecasts, local officials and residents are beginning to make preparations for the potential severity of the upcoming weather. Specific details regarding the nature of these preparations were not provided in the summary.

El Niño is a climate pattern characterized by the unusual warming of surface waters in the eastern tropical Pacific Ocean. Its influence can extend globally, affecting weather patterns across continents. The strength of an El Niño event is typically categorized, with “very strong” indicating a significant deviation from normal ocean temperatures and atmospheric conditions, often leading to more pronounced weather effects.


Story summarized from the original created by Steph Rodriguez on ww2.kqed.org, see more information here.

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