PORTLAND, Ore. (KOIN) -- With meteorological winter just weeks away, the Oregon Chapter of the American Meteorological Society (AMS) hosted its 33rd annual Winter Weather Forecast Conference at OMSI on Saturday.

A weak La Niña is taking shape over the Pacific Ocean and could influence the winter season over the Pacific Northwest. Portland's last winter season was impacted by the Pacific Ocean waters sitting on the fringe of a weak La Niña. A strong La Niña typically brings cooler and wetter weather to the Pacific Northwest. However, the 2024-2025 winter season was relatively mild considering what's normal for a La Niña year. The mild trend was likely due to the Pacific Ocean remaining closer to a neutral state.

Another weak La Niña is taking shape this year. So, a similar winter pattern

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