The National Weather Service has issued high wind warnings and watches across parts of Montana, Wyoming, Idaho, Washington, and Oregon through Wednesday, December 17, 2025. A strong surface low-pressure system will bring sustained winds of 25–45 mph and gusts exceeding 70 mph in exposed and mountainous areas. The alerts cover mountain passes, foothills, and valleys, creating hazardous travel conditions, especially for high-profile vehicles. Some regions may also see heavy snow, unstable conditions, and a slight risk of flash flooding.