Kyodo reports that the US military is to fly an unmanned plane over Fukushima, equipped with infrared sensors, to give an aerial view of what is going on.
This is an extract is from the US embassy's advice to its citizens in Japan: "Consistent with the NRC [Nuclear Regulatory Commission] guidelines that apply to such a situation in the United States, we are recommending, as a precaution, that American citizens who live within 50 miles (80 kilometers) of the Fukushima Nuclear Power Plant evacuate the area or to take shelter indoors if safe evacuation is not practical."
The US Environmental Protection Agency says it is increasing its monitoring of radiation along the western coast and Pacific territories, AP reports. However the US Nuclear Regulatory Commission has said it does not expect harmful levels to reach North America.
The EPA routinely monitors this information, and it is likely they are setting up monitoring for future study/litigation purposes.
The AP news agency is quoting Tepco as saying a new power line is almost ready which could end the crisis. The disruption of power to the pumps which send coolant through the reactors is what led to their overheating.
Gregory Jaczko, head of the US Nuclear Regulatory Commission (NRC) has said there is no water left in the spent fuel pool in reactor four, adding: "We believe that radiation levels are extremely high." Mr Jaczko was speaking to Congress in Washington and it was not immediately clear where his information had come from.