Potential Path of Fukushima Radiation Fallout - Several Views
Calculated time for radioactive particles to cross the Pacific from the power plants in Japan to big West Coast cities if the particles take a direct path and move at a speed of 20 mph:
Cities Est. Distance (miles) Est. Time to Cross Pacific (days)
Anchorage 3,457 7
Honolulu 3,847 8
Seattle 4,792 10
Los Angeles 5,477 11
California ‘closely monitoring’ Japan nuclear leak
However, a very good article at Weather Underground is more reassuring about the possible path of fallout:
Radiation from Japan not likely to harm North America
This has been on my mind since reading an article stating that there has been a run on iodine pills in Switzerland.