A Winter Storm Warning has been issued for Denver, Boulder and Golden, as the biggest Denver-area snowstorm in three years is forecast to start Wednesday night. The winter weather storm system is forecast to arrive in Colorado on Wednesday, with rain turning to snow sometime between Wednesday night and Thursday morning. The worst of the impact will be on Thursday, with the storm tapering off Friday. That could mean 36 hours of rain and snow in the Denver metro area. Widespread snow is likely across Colorado's Front Range and Interstate 25 corridor. Travel will be especially difficult in the foothills. The National Weather Service said to expect 9 to 18 inches of snow along the Interstate 25 corridor in Denver, Golden and Boulder between Wednesday and Friday, with feet of snow falling in the foothills. Read more: https://www.9news.com/article/weather/weather-colorado/snow-winter-storm-warning-denver-colorado/73-81704fbe-88a8-4115-83f7-7250b502d9a8