Northern California Earthquake Plot by Levels by John Wingate August 5, 2019 written by John Wingate August 5, 2019Northern California Earthquake Plot by Levels 0FacebookTwitterPinterestLinkedinTumblrRedditStumbleuponWhatsappEmailLeave a Comment Cancel ReplySave my name, email, and website in this browser for the next time I comment.Please enter an answer in digits:nineteen − 16 =