2nd Update: 9/21/21

 More significant activity has indeed occurred in other parts of the world today. Earlier, a magnitude 6.4 struck near the coast of Bio-Bio, Chile. No damage or injuries were reported. A magnitude 5.8 just struck Southwestern Australia an hour ago, which is not common in that part of the world for an earthquake of that size. Its epicenter was 128 kilometers(79.5 miles) east of Melbourne, Victoria's State Capital. So far, there have not been any reports of injuries. However, there have been reports of damage to buildings in the Melbourne area. More seismic activity has been occurring in Southern California today. A mag. 3.7 with an aftershock of 3.5 occurred near Anza. Numerous micro quakes have followed, like a swarm. There has also been some more seismic activity occurring across other parts of the United States today and there could be more to come within days. Multiple small quakes have occurred across Texas and Oklahoma. There have also been more micro quakes occurring in the New Madrid Seismic Zone each day over the past week. A mag. 3.1 occurred there last Monday on the 12th which was felt by a number of people in the area. Small earthquakes in intraplate seismic zones are far less frequent than small earthquakes along plate boundaries, so the NMSZ may have been showing signs of becoming more active lately. There have been periods where there has not been any micro EQs in the NMSZ in several days while some more micro EQs have occurred in Eastern TN.

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