San Juan storm history

Rock falls occurred along Highway 550 near the Red Mountain Pass snowshed which is between mile markers 87 and 88, due to significant rainfall reported around 1000 MST on October 11.

Heavy rain from thunderstorms occurred in the early morning hours of June 21 and caused a major rock slide that damaged part of the railroad track for the Durango to Silverton Narrow Gauge Railroad. Exact time of occurrence is estimated. Part of the 45-mile long railroad track wa…

A mudslide closed Hotel Draw Road (Forest Service Road 550) half a mile east of its intersection with the Colorado Trail.

A section of Hotel Draw Road (Forest Service Road 550) was blocked by a mudslide one-half mile east of its intersection with the Colorado Trail.

Numerous mudslides occurred in remote areas of San Juan County, most notably at Stony Pass near Pole Creek. Backcountry roads were closed due to cleanup operations.

A significant debris flow of mud, rocks and branches occurred on Cinnamon Pass in the San Juan Mountains. The exact time of the slide is unknown.

A debris flow occurred as a result of heavy rain over Ophir Pass in the Southwest San Juan Mountains. Social media footage showed a combination of rock and mud across the pass with cars having to turn around as a result of the debris flow.

Heavy rain brought down a massive amount of debris from the Elk Creek drainage which jammed the Durango and Silverton Narrow Gauge railroad. The debris washed out over 40 feet of the tracks. CoCoRAHS reports from Silverton reported over an inch of rain having fallen from storms.

Outflow winds from a thunderstorm produced strong wind gusts at the Eagle Mountain wind sensor location.

The Eagle Mountain automated weather station recorded a 61 mph outflow wind gust.

The Eagle Mountain weather station measured thunderstorm outflow wind gusts of 84 mph.

A major flash flood roared down from the west slope of the Animas River Valley across the Durango and Silverton Narrow Gauge Railroad and into the Animas River. The flash flood deposited mud, boulders, and pine trees up to 15 feet deep onto a 300 foot section of railroad tracks. …

Heavy convective rainfall concentrated just north of the La Plata and San Juan County line produced a massive flow of water, rock, and mud which traveled across the Durango to Silverton Narrow Gage Railroad track and dammed up the Animas River about one mile north of Needleton. I…