American Nuclear Radiation Exposure Potential Japan

Japanese nuclear plant explosion shortly after the big earthquake menguncang sakura country that has raised fears of radiation leakage, which is likely to have broad impact, depending on weather conditions. Will there be a large radiation causing another disaster, it is becoming part of the problem of meteorology.
Japan lies in the northern hemisphere mid-latitudes of the earth, like the United States.Thus the weather is dominated by the west wind, but with significant variation near the surface of the earth.
Where goeth 'cloud radiation' from the Fukushima Daiichi or Onagawa, highly dependent on weather patterns during the radiation leak at a nuclear installation.
In addition, these conditions depend on how high the clouds can reach the atmosphere.Therefore, the wind is usually very varied in the region between the earth and the atmosphere near the surface, where the flow that leads to the east.
In general, a radioactive cloud could rise high into the atmosphere, then fly to the east and northeast across the Pacific Ocean to reach North America, or around Alaska to California. The spread of radioactive cloud containing it also depends on atmospheric conditions during the radiation leak occurred.
Although such clouds seem harmless while in the upper atmosphere, but the radioactive particles fall from these clouds must be of concern to the authorities.
In the event of radiation leak near the soil surface, then the leak could be influenced by the winds blow low, which is easily changed.
Generally during the winter, winds near the earth's surface in the northeastern region of Honshu blowing toward offshore or from west to east. In such conditions, the radiation that occurs in low atmospheric layers will be pushed into the sea. However, sometimes the wind blows toward the coast, and if this happens then no doubt it will be a major problem that must be faced by Japanese authorities .*
In his article in AccuWeather (16 / 3), senior meteorologist Jim Andrews create table estimates the travel time spread of radiation from nuclear installations Japan to the cities in the United States west coast with winds of 20 miles per hour.
Nuclear radiation is expected to reach the city of Anchorage, which is 3457 miles from Japan, within 7 days. Reach the city of Honolulu (3847 miles) in 8 days. Arriving in Seattle (4792 miles) within 10 days, and in Los Angeles (5477 miles) within 11 days.