Last night, around 9:30, a small earthquake hit the town of Tamworth, in New South Wales. The USGS reports that it was a magnitude 4.3 earthquake, enough to give a short jolt, but certainly nowhere close to being large enough to cause any major damage. Though small, this part of New South Wales is not close to an area with active tectonics, so it was significant enough to make the news. Looking at the moment tensor solution, the earthquake was largely compressional in nature, and I speculate is that it is related to the stress field caused by the collision between Australia and the Pacific plates. In comparison to the earthquake that hit the Canberra region in April, this earthquake was about 3 times larger.