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Swarm of more than 40 earthquakes in 24 hours on the Blanco Fracture Zone off the Pacific Northwest coast raises fears of a significant quake that could cause a tsunami
 [Daily Mail, Where America Gets Its News] - Over 40 earthquakes off the Pacific Northwest coast raises fears of a quake causing possible tsunami
- The earthquakes, each ranging from a magnitude 3.5 to 5.8, occurred about 200 to 250 miles west of Newport, a city on Oregon's central coast
- A 5.0 or more magnitude earthquakes amounts to three times the annual average
- The US National Tsunami Warning Center reports that none of the 40-plus earthquakes from this week have caused a tsunami alert
- The region was struck with a magnitude 8.7-9.2 quake on January 26, 1700, the largest known earthquake in continental US history
- That quake happened on the nearby Cascadia Subduction Zone, and caused a tsunami strong enough to hit both West Coast and the coast of Japan
Posted by: Skidmark 2021-12-09 |
