A tectonic earthquake measuring 4.0 on the Richter scale jolted Padang, West Sumatra Province, on Tuesday, at 9.23 am local time, ANTARA reported. The quake's epicenter was located at 0.94 degrees southern latitude and 99.8 degrees eastern longitude, at a depth of around 36 km below sea level, and around 37 km southwest of Pariaman town, Dedi Hermanto, staff member of the Padang Padanjang meteorological and geophysics office, said here on Tuesday. Local residents in Padang and Pariaman could feel the temblor at between the first and second level of Modified Mercally Intensity (MMI). There were no immediate reports of casualties or damage.