Good morning Redwood Coast CA. Did you feel the magnitude 6.4 quake about 7.5 miles southwest of Ferndale at 2:34 am? The #ShakeAlert system was activated. See: https://t.co/zwOapjTWaA pic.twitter.com/eMSUAT3inw

— USGS ShakeAlert (@USGS_ShakeAlert) December 20, 2022