Just a little after midnight Thursday, local time, cyclone Yasi made landfall in Mission Beach, Queensland State, Australia, adding even more grief to a country already devastated by recent flooding.  At least 90,000 homes lost power already as the monster storm moved inland, where it's expected to rage on for at least two days before breaking up.  The Bureau of Meteorology warns that at least 28 inches of rain could fall in a few hours, and when combined with the fact that Yasi is striking at high tide, many towns could be flooded to the rooftops.  Entire cities have been ordered evacuated to about two dozen storm shelters, but the effectiveness of these shelters remains questionable since winds are expected to gust to at least 186 miles per hour.  Officials also say that Yasi could cause considerable damage to the country's famed Great Barrier Reef.