Yellowstone Temporary Closure: Sylvan Pass

Yellowstone Temporary Closure: Sylvan Pass

(Update: 2 pm) -- Yellowstone's West Entrance is now open. Sylvan Pass will remain closed. The pass has received 12 inches of snow and experienced heavy winds and warm temperatures during the past 36 hours. Park Officials plan to maintain the closure through a storm system that predicts more heavy wet snow through Saturday morning, possibly an additional 8-12 inches.

(Original report) -- Yellowstone National Park's West Entrance road is temporarily closed due to a boulder that fell in the roadway. Park Officials have also temporarily shut down Sylvan Pass to oversnow travel because of storm conditions and avalanche danger.

A media release Thursday morning said all travel by snowmobile, snowcoach, skis and snowshoes over Sylvan Pass is prohibited. Only National Park Service employees involved in avalanche forecasting and hazard mitigation will be allowed in the area until further notice. Sylvan Pass will remain closed until weather conditions allow for safe use. The release said it's not possible to estimate a timeline for the closure because it depends on weather.

The West Entrance will be closed until the roadway is cleared, but officials weren't sure when that road would reopen either. Call the park's Road Update line at 307-344-2117 to check road conditions and closures.

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