1918 San Fermín earthquake
Earthquake that struck Puerto Rico / From Wikipedia, the free encyclopedia
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The 1918 San Fermín earthquake,[5][6] also known as the Puerto Rico earthquake of 1918, struck the island of Puerto Rico at 10:14:42 local time on October 11. The earthquake measured 7.1 on the moment magnitude scale and IX (Violent) on the Mercalli intensity scale. The mainshock epicenter occurred off the northwestern coast of the island, somewhere along the Puerto Rico Trench.
UTC time | 1918-10-11 14:14:42 |
---|---|
ISC event | 913306 |
USGS-ANSS | ComCat |
Local date | October 11, 1918 (1918-10-11) |
Local time | 10:14:42 [1] |
Magnitude | 7.1 Mw[1] |
Depth | 15 km (9.3 mi) [1] |
Epicenter | 18.8°N 67.22°W / 18.8; -67.22 [1] |
Type | Unknown |
Areas affected | Puerto Rico |
Total damage | $4–29 million USD [2][3] |
Max. intensity | MMI IX (Violent) [3] |
Tsunami | Yes |
Casualties | 76–118 [2][4] |
The earthquake triggered a tsunami that swept the west coast of the island. The combined effects of the earthquake and tsunami made it one of the worst natural disasters that have struck the island. The losses resulting from the disaster were approximately 76–118 casualties[4] and $4–29 million in property damage.