gas prices en Gas Prices Expected To Retreat As Isaac Fades As a tropical storm was gathering strength last week, fears were growing that the fierce winds might knock out Gulf Coast refineries, send gasoline prices soaring and seriously damage the U.S. economy.<p>But when Hurricane Isaac slammed into the Gulf Coast on Tuesday, it was only a Category 1 hurricane, far weaker than Katrina, the monster storm that hit seven years ago.<p>Now, with the remnants of Isaac dissipating, economists are saying the storm's national economic impact will be relatively muted and short-lived. Fri, 31 Aug 2012 18:43:00 +0000 Marilyn Geewax 19073 at