1992 St. George earthquake
The 1992 St. George earthquake was a Mw5.8 earthquake that occurred on September 2, 1992 at approximately 4:26 AM MDT along the Washington Fault zone near the larger Hurricane Fault about 5 miles (8.0 km) southeast of St. George in Utah, United States. The quake triggered a landslide that destroyed three houses and caused approximately US$1 million in structural and cosmetic damage to houses, roads, natural formations, and utilities. No people were killed by the quake. EarthquakeAt 4:26 AM MDT on September 2, 1992, a magnitude 5.8 earthquake occurred along the Washington Fault zone near the larger Hurricane Fault about 5 miles (8.0 km) southeast of St. George in Utah, United States.[1] MagnitudeReports on the magnitude of the earthquake vary.[1][2][3] The University of Utah reported the quake as a Mw5.8 in their official report via the Intermountain Seismic Belt Historical Earthquake Project,[4] which is supported by a 1994 news article from the Deseret News[5] and an official report from the Utah Geological Survey.[6] A contemporaneous report from the journal Arizona Geology reported Mw5.5 from the University of Arizona and Mw5.9 from the USGS.[1] DestructionMost of the force of the earthquake was directed away from the city of St. George toward Hurricane and Springdale.[5] In the Balanced Rock Hills area of Springdale, a landslide covered part of Utah State Route 9, taking several hours to complete movement.[6] The slide was about 1,600 feet (490 m) long and 3,600 feet (1,100 m) wide, contained boulders up to 20 feet (6.1 m) in diameter, with a total volume of 18,000,000 cubic yards (14,000,000 m3) and total area of 4,400,400 square feet (408,810 m2).[2][6] It destroyed three houses as well as above- and below-ground utilities, causing about US$1 million in damage.[5][6] See also
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