The Pacific Northwest, which includes Northern California and Oregon, is bracing for a major storm system this winter. This system is likely to deliver more precipitation and lower temperatures to the region, having a substantial impact on local regions.
Upper Level Forecast:
A complex combination of upper-level atmospheric dynamics is expected to have a considerable impact on weather patterns this winter. A robust mid-level trough is predicted to form across the region, increasing vertical airflow and favoring precipitation accumulation. These circumstances, combined with strong jet streams, are predicted to produce a series of powerful storm systems across the region, contributing to significant snowfall and torrential rainfall.
Snow Forecast:
Mountainous Regions (Sierra Nevada, Siskiyou, and Cascades): Heavy snowfall is forecast, which is critical for regional water supplies and winter enjoyment. These places may have multiple large snowfalls, particularly during seasons of extreme cold.
Upper Inland Areas: Lower elevations, particularly those farther from the shore, may also receive snow, albeit less regularly. Snowfall in these places will be mostly determined by the depth of cold air that extends further inland.
Rainfall Forecast:
Coastal areas in Northern California and Oregon should expect heavy rainfall and major floods at storm peaks. These places are likely to bear the brunt of upcoming Pacific storms.
Inland Valleys: Despite receiving less moisture than coastal places, valleys such as the Willamette and Sacramento will experience significant rainfall, raising the risk of stream and river flooding.
Wind Forecast:
Coastal Regions: High wind events are expected along the Northern California and Oregon beaches, with gusts exceeding 60 mph, especially during severe storms, perhaps causing damage and erosion.
Winds in the inland and valley regions are predicted to reach 30-50 mph during major weather events, affecting tree stability and power lines, particularly in places with saturated soils.
