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Flagstaff ( / ˈflæɡ.stæf / FLAG-staf) is the county seat of Coconino County, Arizona, in the southwestern United States. As of the 2020 United States census, the city's population was 76,831. Flagstaff is the principal city of the Flagstaff metropolitan area, which includes all of Coconino County, and has a population of 145,101.
The United States Naval Observatory Flagstaff Station ( NOFS ), is an astronomical observatory near Flagstaff, Arizona, US. It is the national dark-sky observing facility under the United States Naval Observatory (USNO). [1] NOFS and USNO combine as the Celestial Reference Frame [2] manager for the U.S. Secretary of Defense.
Lowell Observatory is an astronomical observatory in Flagstaff, Arizona, United States. Lowell Observatory was established in 1894, placing it among the oldest observatories in the United States, and was designated a National Historic Landmark in 1965. [2] [3] In 2011, the Observatory was named one of "The World's 100 Most Important Places" by ...
The Coconino National Forest is a 1.856-million acre (751,000 ha) United States National Forest located in northern Arizona in the vicinity of Flagstaff, with elevations ranging from 2,600 feet to the highest point in Arizona at 12,633 feet (Humphrey's Peak).
On October 5–6, 2010, a destructive series of thunderstorms struck Arizona, resulting in the state's largest tornado outbreak and its costliest weather disaster on record. Spawned by a nearby cold-core low, successive hailstorms in Phoenix and surrounding locations on October 5 caused damage to thousands of homes, businesses, and vehicles.
Lava River Cave (Arizona) / 35.3422694°N 111.8356083°W / 35.3422694; -111.8356083. Lava River Cave is a lava tube in northern Arizona 's Coconino National Forest. At approximately 0.75-mile (1.21 km) long, it is the longest cave of its kind known in Arizona. The cave was discovered by some lumbermen in 1915 and has historically been ...
The United States Naval Observatory ( USNO) is a scientific and military facility that produces geopositioning, navigation and timekeeping data for the United States Navy and the United States Department of Defense. [2] Established in 1830 as the Depot of Charts and Instruments, it is one of the oldest scientific agencies in the United States ...