This morning, a LARGE preliminary #magnitude M6.3 #earthquake struck off the coast of #Oregon at 8:07 am CST. Ground motion was felt in many different cities, including Eugene and Portland. There is no tsunami risk. #RaspberryShake Station RAD87, operated by Texas Educational Seismic Project (#TXESP), recorded the event. In the image below, a 0.5 Hz low-pass filter has been applied to the #seismogram.