Overall Forecast: The Pacific Northwest, including Northern California and Oregon, is bracing for a winter dominated by a powerful storm system. This system is expected to bring enhanced precipitation and lower temperatures across the region, significantly impacting local regions.
Upper-Level Forecast:
A complex interaction of upper-level atmospheric dynamics is anticipated to influence this winter’s weather patterns significantly. A robust mid-level trough is expected to establish over the region, enhancing the vertical movement of air and facilitating the formation of precipitation. Coupled with strong jet streams, these conditions are poised to drive the series of potent storm systems across the area, contributing to the expected heavy snowfall and intense rainfall.
Snow Forecast:
Mountainous Regions (Sierra Nevada, Siskiyou, and Cascades): Substantial snow accumulations are expected, which are vital for the regional water supply and winter recreation. These areas could see several heavy snowfalls, especially during periods of peak cold.
Upper Inland Areas: Lower elevations, particularly those further from the coast, may also experience snow, though less frequently. Snowfall in these areas will largely depend on cold air depths reaching further inland.
Rainfall Forecast:
Coastal Areas of Northern California and Oregon: Expect heavy rainfall with the potential for significant flooding during storm peaks. These areas will likely face the brunt of incoming Pacific storms.
Inland Valleys: While receiving less moisture than coastal areas, valleys such as the Willamette and Sacramento will still see considerable rainfall, increasing risks for stream and river flooding.
Wind Forecast:
Coastal Regions: Both Northern California and Oregon coasts will experience high wind events, with gusts that may surpass 60 mph, particularly during stronger storms, causing potential damage and erosion.
Inland and Valley Areas: Winds in these regions are expected to reach 30-50 mph during significant weather events, impacting tree stability and power lines, especially in areas with saturated soils.
Approximate Rainfall Totals (in inches):
-Sina