(Portland, OR)  --  U.S. Geological Survey officials say three earthquakes were recorded yesterday off the Oregon coast.  The agency says two of the quakes were magnitude 4.1, and the third was magnitude 4.8.  USGS says the first temblor was recorded at 7:18 a.m., the second hit at 11:51 a.m., and the final earthquake hit at 12:08 p.m.  None of the quakes triggered a tsunami warning.