Cars and airplanes

Cars and airplanes swept by a tsunami are pictured among debris at Sendai Airport, northeastern Japan March 11, 2011. (REUTERS/KYODO Kyodo)

HAWAII ( KTLA ) -- Millions of tons of debris that washed into the Pacific Ocean during Japan's earthquake and tsunami last March is headed to U.S. shores, researches said Tuesday.

Government scientists in Hawaii say everything from furniture to roofs, to pieces of cars is now floating could arrive on California, Oregon and Washington shores by 2013 or 2014.

The debris is scattered across hundreds of miles of the Pacific Ocean and is moving at a rate of about 10 miles a day, researches said.

There are concerns about a potential environmental hazard for fishing boats and ships.

Researches also believe it is highly unlikely that the refuse is radioactive because much of it was swept out to sea before the Fukushima nuclear plant meltdown.

Much of the material is expected to break up and sink.