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Category: Fukushima

Japan Fallout?

This blog is a work-in-progress to help address the situation in Japan and concerns about fallout. Here are some sources of radiation data:

TARA Network – Terrestrial and Atmospheric Radiation Awareness Network

These stations utilize probes incorporating “2 inch pancake gm tubes” which are sensitive to alpha, beta, gamma and x-radiation.  Average background readings vary from 16 to 60 CPM (Counts per Minute), depending on altitude and natural soil composition.  Horizontal scale shows time in hours.  Vertical scale shows radiation level in CPM.

Ashland, OregonOnline

Haiku, HawaiiTemporarily Offline

Anchorage, AlaskaTemporarily Offline

Petaluma, California – Online

To view TARAnet data in its present form you must have JAVA installed on your computer, and you must have JAVA enabled in your browser.  If you have trouble getting most recent data please clear cache restart your browser.

We are working to bring more live monitoring stations onto TARA Network.  Stay tuned.

Radiation Detection Network at has created a portal where radiation data can be shared.

The EPA is reporting data from their Radnet network of sensors here.

UC Berkeley is detecting trace amounts of radioactivity from Fukushima.  View their data here.

Radiation Network – An organized grass roots network of detectors.

This  network of instruments display data using GeigerGraph software from the company  Mineralab.  People who own compatible Geiger Counters can purchase the software and participate in the network. There are a lot of features in the software including the ability to view network data in detail even if you are not a radiation monitoring site.

Please keep in mind that we are not in control of quality on all of these stations.  Increased radiation levels can sometimes be caused by people undergoing medical procedures, household items that are radioactive, and malfunctioning equipment.  Higher levels at some stations can also be due to radon gas, altitude variations (higher at higher altitudes), mineral content of the soil, and other factors.  Look for trends and watch wind patterns.

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Nuclear News Updates

High level of iodine 131 in seawater near N-plant

A high level of radioactive iodine has been detected in seawater near Japan’s troubled Fukushima Daiichi nuclear power plant. The facility was hit by the March 11th earthquake and tsunami. Link to NHK WORLD TV – an English language 24-hour international news and information channel. News script available here.

Stricken nuclear plant’s No.3 reactor ‘may have cracked’ as Fukushima Fifty workers are treated for radiation contamination
Read more:


Fukushima Live Webcam


Live NHK Japan News and Video link (English)




Japan Radioactivity Map

MEXT – Ministry of Education Culture, Sports, Science and Technology Japan

NISA – Nuclear and Industrial Safety Agency

Japan Atomic Industrial Forum

EPA – US Environmental Protection Agency

Online Geiger Counter Nuclear Radiation Detector Map

Nuclear Power Plants Around the World

Finland Radiation Monitoring – Finnish Radiation and Nuclear Safety Authority

Dutch Radiation Monitoring

Swiss Radiation Monitoring


Europe Radioactivity Maps

Europe Radioactivity Maps

Northern Hemisphere Cryosphere Conditions

Northwest Pacific Infrared Loop

Weather Model – Global Jet Stream Wind and 250 mb Pressure


Jet Stream Analyses and Forecasts

Realtime radiation data collected via the System for Prediction of Environment Emergency Dose Information (SPEEDI)

Telascience Map Visualization – twenty-three values from two hundred+ stations, every ten minutes, including: radiation level, wind speed, wind direction and precipitation

RDTN created this site to display the reliable data readings as they become available

The best information and links are being consolidated right here on

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