"Prelim[inary] M[agnitude] 5.6 earthquake near the coast of Northern California Sep-22 19:50 UTC," the US Geological Survey tweeted.
Prelim M5.6 earthquake near the coast of Northern California Sep-22 19:50 UTC, updates https://t.co/rdgX8GD3Vx, 2 #sismo tweets/min
— USGSted (@USGSted) September 22, 2017
The organization’s website noted that 20 minutes earlier, a 5.7 magnitude earthquake hit in the same general area, but 150 km further from the coast. There has been no tsunami warning issued.
New #Earthquake.
— Chile Alerta 🇨🇱⚠🌎 (@ChileAlertaApp) September 22, 2017
5.56 — 58km W of Ferndale — #California.
2017/09/22 19:50:36.#Temblor #Sismo pic.twitter.com/XmrYvVw1an
