By Brian Williams Local Journalism Initiative Reporter For the second time in three months, an earthquake hit the Southwestern Ontario town of Corunna on Wednesday morning, and maybe residents are getting used to it, because some didn’t even notice. A government agency, Earthquakes Canada, reports that the relatively small 2.5-magnitude earthquake was recorded at 9:47 a.m. two kilometres southwest of the Sarnia-area community of 6,000. But beyond a loud noise, there didn’t appear to be much to the seismic activity. “I kind of heard a noise this morning, but I didn’t really feel anything shake,” said Mayor Jeff Agar of St. Clair Township, which includes Corunna. “It just sounded like far-off thunder to me.” That was far different than the 2.5-magnitude quake that hit the town on Oct. 19, which…