Nagpur earthquakes recorded over two days have renewed concern over seismic monitoring, construction standards and urban safety in Vidarbha. Mild earthquake tremors were recorded in Nagpur district on Sunday afternoon, triggering concern among residents on Diwali. Nagpur: A mild earthquake measuring 3.6 on Richter scale struck Sironcha taluka in Gadchiroli at around 4.36am on Thursday, with tremors also felt in parts of Aheri and Nagepalli.The tremor.