Mount Cirrus

Mount Cirrus
East aspect, centered, from Trail Ridge Road
Highest point
Elevation	12,808 ft (3,904 m)[1]
Prominence	400 ft (122 m)[1]
Parent peak	Howard Mountain (12,826 ft)[1]
Isolation	0.56 mi (0.90 km)[1]
Coordinates	40°26′05″N 105°54′07″W / 40.4346827°N 105.9019049°W / 40.4346827; -105.9019049[2]
Naming
Etymology	Cirrus cloud
Geography
Mount Cirrus Location in Colorado Show map of Colorado Mount Cirrus Mount Cirrus (the United States) Show map of the United States
Country	United States
State	Colorado
County	Grand County / Jackson County
Protected area	Rocky Mountain National Park Never Summer Wilderness
Parent range	Rocky Mountains Never Summer Mountains
Topo map	USGS Mount Richthofen
Geology
Rock type	shale and granodiorite[3]
Climbing
Easiest route	Southwest Ridge class 2[4]

Mount Cirrus is a 12,808-foot-elevation (3,904-meter) mountain summit in Colorado, United States.

Mount Cirrus is situated on the Continental Divide along the boundary shared by Grand County and Jackson County.^[5] It is the third-highest peak of the Never Summer Mountains which are a subrange of the Rocky Mountains.^[6] The mountain is situated on the western boundary of Rocky Mountain National Park and is visible from Trail Ridge Road within the park. The west side of the peak is in the Never Summer Wilderness, on land managed by Medicine Bow–Routt National Forest. Precipitation runoff from the mountain's west slope drains into tributaries of the Michigan River and the east slope drains into headwaters of the Colorado River except a portion which is diverted by the Grand Ditch. The counterintuitive direction of water flow is because the Continental Divide forms a loop in this area, whereby the peak's west slope runoff flows to the Atlantic Ocean and the east slope to the Pacific. Topographic relief is significant as the summit rises 3,600 feet (1,100 meters) above the Colorado River in three miles (4.8 km) and 2,600 feet (790 meters) above the South Fork Michigan River in one mile (1.6 km).

The mountain's toponym was applied in 1914 by James Grafton Rogers,^[7] and was officially adopted in 1932 by the United States Board on Geographic Names.^[2] Rogers also named Mount Cumulus and Mount Nimbus, with the three names referring to different types of common clouds. As President of the Colorado Geographic Society, Chairman of the Colorado Geographic Board, and President of the American Alpine Club, Rogers participated in naming many of Colorado's mountains.^[8] The north ridge of Cirrus, officially named Hart Ridge, is named in remembrance of Eldon Charles Hart, Jr., of the Kansas Air National Guard, who was killed in the crash of his plane on this ridge on January 30, 1967, at age 26.^[9]

According to the Köppen climate classification system, Mount Cirrus is located in an alpine subarctic climate zone with cold, snowy winters, and cool to warm summers.^[10] Due to its altitude, it receives precipitation all year, as snow in winter, and as thunderstorms in summer, with a dry period in late spring.

• List of peaks in Rocky Mountain National Park
• Never Summer Mountains
• Mountains of Grand County, Colorado
• Mountains of Jackson County, Colorado
• Mountains portal

• Weather forecast: Mount Cirrus