"Unless we see breaching of the containment vessels, there should be no significant releases of radioactivity," Starosta said.
Is radiation drifting from the Japan reactors to California now?
Probably, but not enough to worry about, said Krzysztof Starosta, an associate professor and nuclear physicist at Simon Fraser University in Vancouver, British Columbia.
Steam has vented from the damaged reactors. This steam contains radioactivity, but not enough to cause health problems even for the local population in Japan, he said.
If it did reach California, it would not be a health risk. A dental X-ray or smoking a cigarette imparts more radiation than what might reach California from this steam venting.
research confirms the jet stream routinely delivers common pollutants to California. UC Davis atmospheric scientist Steven Cliff contributed to a recent study that found as much as 29 percent of California's fine particulate pollution arrives on the jet stream from Asia, mainly from China.
Source: