A fishing boat crashes against a building after being swept ashore during a massive tsunami that hit the Japanese fishing port of Ofunato, Japan, March 15, 2011. The town was devastated by an 8.9-magnitude earthquake that triggered the destructive ts...

WASHINGTON, March 16, 2011 -- U.S. Ambassador to Japan John V. Roos today issued a message to Americans living there to bring them up to date on the aftermath of the earthquake and tsunami that struck the island nation last week.

Here is the text of the ambassador's message:

Today our hearts remain with our Japanese friends who, after suffering this devastating tragedy just four days ago, have to undertake recovery and reconstruction and address the ongoing nuclear emergency.

We understand that many of you are anxious and have questions in the shadow of the Fukushima emergency, since we are in the midst of a complex, constantly changing, and unpredictable situation. In this fluid situation, our commitment to our citizens is to accumulate accurate information and assess it sufficiently in order to make important judgments.

Since the first reports of trouble with the reactors, American nuclear experts have worked around the clock to analyze data, monitor developments, and provide clear assessments on the potential dangers. While at times we have had only limited access to information, I am personally committed to assuring that our experts have as much access and information as possible, and the necessary resources to understand the situation. I have personally been deeply engaged in these efforts.

After a careful analysis of data, radiation levels, and damage assessments of all units at Fukushima, our experts are in agreement with the response and measures taken by Japanese technicians, including their recommended 20 km radius for evacuation and additional shelter-in-place recommendations out to 30 km.

Let me also address reports of very low levels of radiation outside the evacuation area detected by U.S. and Japanese sensitive instrumentation. This bears very careful monitoring, which we are doing. If we assess that the radiation poses a threat to public health, we will share that information and provide relevant guidance immediately.

The United States will continue to work around the clock to provide precise and up-to-date information supported by expert analysis to ensure the safety and security of our citizens and to help Japan in its time of great need. U.S. citizens in need of emergency assistance should send an e-mail to JapanEmergencyUSC@state.gov with detailed information about their location and contact information, and monitor the U.S. Department of State website at travel.state.gov.

Related Links:

Army ready to help after earthquake, tsunami in Japan

Red Cross website links Japan-based troops to home

U.S. Army Pacific

Army.mil: Asia and Pacific News

DoD: Special Report on the 2011 Japan Eathquake

U.S. Army Garrison - Japan on Facebook

US Army Japan & I Corps Forward on Facebook

Internatioanal Red Cross Family Links website

American Red Cross Safe and Well register