638c2855_cale_and_the_Richter_magnitude__tremor
[degree] IV [description] Most people indoors feel movement. Hanging objects swing. Dishes, windows, and doors rattle. The earthquake feels like a heavy truck hitting the walls. A few people outdoors may feel movement. Parked cars rock. [tremor] 
mediocre
Mercalli scale and the Richter magnitude
tremor