From the Pune Mirror:
Spooked by mystery tremors, WR asks for Met dept probe
"A series of unexplained, low-intensity tremors being felt on a daily basis in two separate pockets in south Mumbai over the last few weeks have forced office-goers to ask for a detailed seismological investigation of the area.
The offices being affected include the higher floors in a row of buildings, particularly Bharat House and Apollo House, at Bombay Samachar Marg in Kala Ghoda, and the Western Railway's headquarters and administrative buildings on both sides of the road at Churchgate.The tremors occur between 4 and 6 pm every day, almost like clockwork, and last about 2-3 seconds. Western Railway has written a letter to the Indian Meteorological Department (IMD) asking them to look into the matter, trace the cause of the tremors, and advise if there is any potential danger to the buildings. When contacted, Sharat Chandrayan, the chief public relations officer at WR, confirmed: "Certain employees working on the higher floors of the administrative building were feeling tremors at certain times of the day. We have sent a letter to the IMD to conduct a thorough scientific investigation. ... "We experience tremors for a few moments every day. They always happen sometime between 4 pm and 5 pm. It's a scary situation because no one seems to know what's causing them."
Another mystery scientists are working to solve. I hope they find out... and that the buildings stay safe.