Harsh Gupta recalled that in the case of the 1950 earthquake on the Arunachal Pradesh-China border, the last great earthquake in the Himalayan region, an aftershock was recorded almost two years later. Sometimes it'll be just a rumble and other times we'll actually feel the ground moving. By JOHN ANTCZAK, DAISY NGUYEN and MARCIO JOSE SANCHEZ July 7, 2019 GMT. Like many other things associated with earthquakes, there is also uncertainty regarding how long the aftershocks can last. Aftershocks occur in rocks located near the epicentre or along the fault that harboured the principal quake. I live right in the area where the East Coast got the earthquake yesterday and we're still getting aftershock. This does not mean the fault slips 33 millimeters each year. Months of aftershocks could follow big California earthquake. How long do aftershocks last,Aftershocks Are Not Afterthoughts,Earthquakes and faults - Putting Down Roots in Earthquake ...,Earthquake rocks Southern California: Live updates - CNN how long is this going to last? 1 of 22. I live in San Diego(la jolla) and we were hit by the 7.2 earthquake in Mexicali i felt the earthquake at 3:40 pm and at 6 pm i felt 2 very small aftershocks 2 minutes apart. How long do aftershocks last after an earthquake? Just now i was lying in my bed trying to fall asleep at 4 am i felt another. Rather, it stores up 33 millimeters of slip each year to be released in infrequent earthquakes. If we assume movement on the San Andreas has cut off that streambed within the last 2,500 years, then the average slip rate on the fault is 33 millimeters (1.3 inches) per year. The earthquake was a 5.8 on the Richter Scale. Aftershock, any of several lower-magnitude earthquakes that follow the main shock of a larger earthquake.An aftershock results from the sudden change in stress occurring within and between rocks and the previous release of stress brought on by the principal earthquake.