Introduction
A Winter Weather Advisory has been issued for the Cascade mountain passes from 10 a.m. Tuesday to 4 a.m. Wednesday, just ahead of the busy Thanksgiving travel rush. Under Washington law, drivers have a legal duty to adapt to dangerous weather conditions — and failure to do so can have serious consequences.
Winter Weather Expected in the Cascades
According to the National Weather Service, drivers using Snoqualmie, White, or Stevens passes can expect 8–10 inches of snow above 2,000 feet, with the worst conditions likely Tuesday evening. A mix of freezing rain and snow is forecast for Snoqualmie Pass, potentially causing a light glaze of ice. Travel over Tiger Mountain on SR 18 will also be affected.
While lowlands will receive rain, mountain travelers face the dual risk of snow accumulation and reduced visibility. Snow is expected to change to rain by Wednesday as snow levels rise to 5,000 feet.
Check live Snoqualmie Pass conditions here: WSDOT Snoqualmie Pass Report
Legal Responsibilities When Driving in Hazardous Weather
In Washington State, drivers must operate their vehicles with reasonable care — especially when road conditions are dangerous. RCW 46.61.400 (Basic Rule and Maximum Limits) requires drivers to adjust speed for road, traffic, and weather conditions.
Failing to drive cautiously during a Winter Weather Advisory could result in:
- Traffic citations
- Liability in a car accident
- Denial of insurance claims due to negligence
If you’re involved in a crash during snow or ice events, your behavior and preparedness — including use of snow tires or chains where required — could be scrutinized.
How to Prepare for Safe Holiday Travel
To avoid legal or physical hazards, follow these safety tips:
- Check pass conditions regularly
- Use snow tires or chains as required
- Avoid driving during peak advisory hours (Tuesday evening)
- Have emergency supplies in your vehicle
The Washington Department of Transportation (WSDOT) recommends carrying chains and planning alternate routes when possible during high-risk weather periods.
Call to Action
If you’re involved in an accident during hazardous winter weather, it’s important to understand your legal rights and obligations.
Contact Blanford Law today at ken@blanfordlaw.com or 253-720-9304 for guidance on your legal matter.

Additional Resources
- Understanding the Infraction Service Rule in Washington
A guide to how infractions must be served under Washington law, and the consequences of improper service.
https://blanfordlaw.com/infraction-service-rule/ - What Happens Next? A Guide to the Pretrial Services Process in Pierce County
Learn what to expect after an arrest in Pierce County, including monitoring and compliance requirements.
https://blanfordlaw.com/what‑happens‑next‑pretrial‑services‑process/ - What Is RCW 18.185.250 — and Why It Matters
This article explains Washington’s requirements for bail bond recovery agent licensing under RCW 18.185.250.
https://blanfordlaw.com/bail-bond-recovery-agent-license-2/ - Understanding RCW 18.185.300: Planned Forced Entry Requirements for Bail Bond Recovery Agents
A deep dive into the legal conditions required for a bail bond agent to make a planned forced entry in Washington.
https://blanfordlaw.com/rcw-18185300-bail-bond-recovery-entry/ - Understanding Bail Bond Recovery Agent Licensing in Washington
Outlines the licensing process, eligibility criteria, and compliance requirements for recovery agents in Washington State.
https://blanfordlaw.com/bail-bond-recovery-agent-license/