Key Highlights
- The Pacific Northwest will experience a series of severe storms this week.
- Heavy rain and mountain snow are expected in the region.
- Flooding is a significant concern due to saturated ground conditions.
- Winds could gust up to 100 mph in higher elevations, potentially causing power outages.
The Pacific Northwest Braces for Back-to-Back Severe Storms This Week
The atmospheric river, a long, narrow band of moisture-rich air, is bringing significant weather changes to the Pacific Northwest. Over the next few days, residents and emergency services in Washington, Oregon, and Northern California can expect severe storms that will significantly impact their communities.
Timing and Impacts
The first wave of rain and wind, considered a significant atmospheric river for parts of Northern California, is already pushing inland. This event will bring strong winds with gusts reaching up to 60-75 mph in higher elevations from far Northern California to southern Oregon. In the lower elevations, expect gusts of at least 45 miles per hour or more.
These conditions are particularly dangerous for infrastructure, with potential for uprooted trees and power outages.
The Sierra crest could experience winds over 100 mph, significantly impacting travel and safety in the region. By Thursday night, a slight break is expected between the two events, but lighter rain will remain possible in western portions of Washington and Oregon while lighter snow showers are anticipated in the northern Rockies.
Severe Weather Threats
The second storm system arriving late Thursday afternoon for Washington, Oregon, Idaho, and western Montana brings gusty winds, rainfall that reaches higher elevations, and significant mountain snow. This storm will have fewer impacts in California compared to previous waves. The forecast predicts three to five inches of additional rain, which could lead to flooding.
Flash floods are a major concern as the relentless rain pushes into already saturated ground.
The Snoqualmie River is currently running high due to an atmospheric river that impacted the region over the weekend. As the week progresses, new rain will fall on top of existing moisture, increasing the risk of flash flooding in burn scar areas.
Mountain Snow and High Elevation Flooding
Higher elevations in the Cascades could accumulate up to 12-18 inches of snow. Some areas may see even higher amounts, posing a significant threat to travel and infrastructure in these regions. Even parts of the Sierra Nevada will experience some snowfall, though it will be less widespread than in the northern mountain ranges.
Weather writer Jennifer Gray emphasizes the importance of checking back often as the forecast could change. The region is bracing for severe weather impacts that require immediate attention and preparation from both residents and emergency services.
