2000 Yountville Earthquake
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The 2000 Yountville earthquake occurred with a moment magnitude of 5 on a previously unmapped fault, about south southwest of
Yountville, California Yountville ( or ) is an incorporated town in Napa County, in the Wine Country of California, United States. Located in the North Bay region of the Bay Area, the population was 3,436 at the 2020 census. Almost a third of the town's populat ...
in the Mayacamas Mountain Range under Mount Veeder and about south northwest of
Napa, California Napa is the largest city and county seat of Napa County, California, Napa County and a principal city of Wine Country in Northern California, United States. Located in the North Bay (San Francisco Bay Area), North Bay region of the Bay Area, th ...
. It occurred at 01:36 PDT (08:36
UTC Coordinated Universal Time (UTC) is the primary time standard globally used to regulate clocks and time. It establishes a reference for the current time, forming the basis for civil time and time zones. UTC facilitates international communica ...
) on September 3.


Earthquake

The earthquake occurred at a depth of 9.4 km on a northwest-oriented fault and with a right-lateral strike-slip motion. The epicenter of the earthquake was near the West Napa Fault, a previously unmarked fault.


Damage

Several unreinforced masonry buildings in downtown Napa suffered exterior damage as a result of the earthquake. Sixteen buildings were red tagged following the event and 168 were yellow tagged. Although the magnitude of the primary event was considered moderate, shaking was intensified in the city of Napa and surrounding area due to the sedimentary soil on the floor of the valley. The earthquake caused an interruption of power to approximately 10,000
Pacific Gas and Electric Company The Pacific Gas and Electric Company (PG&E) is an American investor-owned utility (IOU). The company is headquartered at Kaiser Center, in Oakland, California. PG&E provides natural gas and electricity to 5.2 million households in the norther ...
customers. Several hundred houses suffered toppled or cracked chimneys and several instances of broken plumbing due to toppled water heaters were reported. Transportation infrastructure in the affected area did not suffer any significant damage from the earthquake.


See also

* List of earthquakes in 2000 *
List of earthquakes in California A list is a set of discrete items of information collected and set forth in some format for utility, entertainment, or other purposes. A list may be memorialized in any number of ways, including existing only in the mind of the list-maker, bu ...
*
List of earthquakes in the United States The following is a list of notable earthquakes and tsunamis which had their epicenter in areas that are now part of the United States with the latter affecting areas of the United States. Those in ''italics'' were not part of the United States wh ...


References


External links


USGS The September 3, 2000 Yountville Earthquake

USGS Shakemap
{{DEFAULTSORT:Yountville Earthquake, 2000
2000 2000 was designated as the International Year for the Culture of Peace and the World Mathematics, Mathematical Year. Popular culture holds the year 2000 as the first year of the 21st century and the 3rd millennium, because of a tende ...
2000 earthquakes 2000 in California September 2000 in the United States Geology of Napa County, California History of Napa County, California Mayacamas Mountains Yountville, California 2000 natural disasters in the United States