Modified Mercalli Intensity Scale

After the recent earthquake near Los Angeles, some residents were left wondering why their ShakeAlert LA app hadn’t notified them. After all, a magnitude 6.4 earthquake rocked Ridgecrest, California, about 150 miles away, and that quake was the first test of ShakeAlert since the app was released in 2018.  The system was working exactly as it was designed to, as the Los Angeles Times reported in the aftermath of the […]