A strong Pacific storm is set to impact the Oregon coast and inland valleys beginning Christmas morning, bringing a mix of wet and windy weather. Rain will start around 9 a.m. and pick up throughout the day, leading to potentially significant travel disruptions.
The combination of a strong warm front and a moderate atmospheric river will result in increased rainfall, particularly in the Portland and Willamette Valley areas, transforming the conditions into a soggy Christmas evening.
Snow is expected to return to the Cascades, which will create travel impacts that could last through the end of the week. The storm is expected to bring several rounds of widespread rain into the weekend.
Expect more rain showers to continue into Thursday afternoon, highlighting the prolonged nature of this storm system, which could result in significant rainfall accumulations over the coming days.
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