Seems like it, & each rank is 30x more energy than the last[1] https://www.usgs.gov/faqs/what-probability-earthquake-a-foreshock-a-larger-earthquake https://ww

Seems like it, & each rank is 30x more energy than the last[1] https://www.usgs.gov/faqs/what-probability-earthquake-a-foreshock-a-larger-earthquake https://www.usgs.gov/faqs/what-probability-earthquake-a-fore... Suggests 5% for larger quake to follow within week. But overall most sources I could find suggested it's hard to know, needs more research 1: https://www.reddit.com/r/askscience/comments/10wecl8/do_little_earthquakes_prevent_big_earthquakes https://www.reddit.com/r/askscience/comments/10wecl8/do_litt...