1892 Vacaville–Winters earthquakes
Damaging earthquake doublet in northern California / From Wikipedia, the free encyclopedia
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The 1892 Vacaville–Winters earthquakes occurred in northern California as a large doublet on April 19 and April 21. Measured on a seismic scale that is based on an isoseismal map or the event's felt area, the 6.4 Mla and 6.2 Mla events were assigned a maximum Mercalli intensity of IX (Violent), and affected the North Bay and Central Valley areas. The total damage was estimated to be between $225,000 and 250,000 and one person was killed. No evidence of fault movement on the surface of the ground was observed as a result of either of the strong shocks. Both occurred in the domain of the San Andreas strike-slip system of faults, but their focal mechanism is uncertain.
UTC time | Doublet earthquake: |
---|---|
A: 1892-04-19 | |
B: 1892-04-21 | |
USGS-ANSS | |
A: ComCat | |
B: ComCat | |
Local date | A: April 19, 1892 (1892-04-19) B: April, 21,1892 |
Magnitude | |
A: 6.4 Mla[1] | |
B: 6.2 Mla [1] | |
Epicenter | 38.4°N 122°W / 38.4; -122[1] |
Type | Unknown |
Total damage | $225,000–250,000 [1][2] |
Max. intensity | MMI IX (Violent)[3] |
Casualties | 1 dead[1] |