1984 Morgan Hill earthquake
The 1984 Morgan Hill earthquake (also known as the Halls Valley earthquake) occurred on April 24 at 1:15 p.m. local time in the Santa Clara Valley of Northern California. The shock had a moment magnitude of 6.2 and a maximum Mercalli intensity of VIII (Severe). The epicenter was located near Mount Hamilton in the Diablo Range of the California Coast Ranges. Nearby communities (including Morgan Hill) sustained serious damage with financial losses of at least US$7.5 million.
Eureka Reno Sacramento Bishop Gabbs Bakersfield Pismo Beach | |
| UTC time | 1984-04-24 21:15:21 |
|---|---|
| ISC event | 555788 |
| USGS-ANSS | ComCat |
| Local date | April 24, 1984 |
| Local time | 13:15:21 PST |
| Magnitude | 6.2 Mw |
| Depth | 10 km (6.2 mi) |
| Epicenter | 37.28°N 121.76°W |
| Fault | Calaveras Fault |
| Type | Strike-slip |
| Areas affected | South Bay Northern California United States |
| Total damage | $7.5–8 million |
| Max. intensity | MMI VIII (Severe) |
| Peak acceleration | 1.3 g at Coyote Dam |
| Landslides | Yes |
| Casualties | 21–27 injured No fatalities |
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