FORUM: Post Your Radiation Monitoring Data Here

Published: January 1st, 2016 at 11:00 am ET


Previous radiation monitoring thread here:

Published: January 1st, 2016 at 11:00 am ET


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12,132 comments to FORUM: Post Your Radiation Monitoring Data Here

  • If you live in or around these areas consider getting a radiation monitor and signing up with a networked site such as

    Here are some details on this very important step you can take to help find the truth…

    Purchase a detector…

    Then download a software package for networked monitoring so your readings are kept online and can be compared to others and your own history averages…

    Live monitoring and record keeping is crucial to find the truth.

    • Remember you MUST know the location and type, make and model of the counter used to determine ANY readings significance.

      Without that information 10 cpm (counts per minuet) on one model of a detector could read 40 cpm on a different type.

      For instance 50 cpm is considered alert level on a GMC-320+

      50 cpm is within normal limits on a windowed Inspector Geiger Counter.

      150 cpm is normal and even low on a first quality gamma detector while 150 on a tube counter (like a GMC-300) would mean it's time to take cover!

      So the numbers derived from counting with a Geiger counter are all relative to the make and model used.

      If you want to know what these numbers actually mean you have to look at the averages and previous background measurements for that counter at that location.

      Always include this info when posting readings. Or the numbers mean nothing.


      Three Geiger Counters Compared:

      Pause it and take particular note of the readings in the opening scene.

      Just saying 10 or 20 or 30 or 50 is a problem or is normal is a myth.

      Ya have to know what was used to measure because the numbers are subject to what was used. Was it outside in the sun or inside in the shade?

      This is the problem with these generalized terms.

      For instance 50 is considered alert level on a GMC-320+

      50 is within normal limits on a windowed inspector Geiger Counter

      150 is normal and even low on a first class gama detector

      • Examples of readings with different numbers (counts) that actually are the same (ballpark normal) and how to know…


        NETC.COM © 2014
        Station ID 1:EB91F394 Petaluma, CA, US
        Click here for data charts
        CPM: current 15 Low 1 High 31
        Average 13
        PI and GMC-320
        Last updated: 2018-09-05 13:11:58 GMT-0400


        NETC.COM © 2014
        Station ID 5:914 San Francisco, CA, US
        Click here for data charts
        CPM: current 169 Low 139 High 186
        Average 154(CPM of Gamma in energy range 600-800keV)
        Last updated: 2018-09-05 11:39:00 GMT-0400


        NETC.COM © 2014
        Station ID 1:709D1185.10 San Leandro, CA, US
        Click here for data charts
        CPM: current 53 Low 19 High 104
        Average 49
        Last updated: 2018-09-05 13:11:51 GMT-0400

        • So we know what the counter used was (GMC-320) in station 1 (EB91F394)

          And we know the average is 13

          We know that station 2 is a gamma counter and counts gamma detections in a specific range.

          That's a epa site (gamma counters are expensive complex instruments) and is completely different than station 1 with a much more sensitive counter that only reads a certain thing (Gamma in energy range 600-800keV).

          Station 3 does not state what is used so the only clue we have of what normal is for that counter is the average over time (Average 49).

          So the only way to really know with station 3 is do the math.

          Current reading, lowest reading and average reading over time.

          And that's the only way to make heads or tails of the vastly different numbers on that map.

          • CodeShutdown CodeShutdown

            HD, Im going to help you in your effort to show how dangerous Fukushima and nuclear accidents are. This relates to the measurements. Dont mention it man, what are friends for?

            from the mouths of really real experts. (part of our 'ask a expert' series)

            "It's a very small risk that I consider negligible," Buesseler told Live Science. "I'll go swimming in those (west coast) waters. I will eat seafood from those waters without any concern." "Whatever we have measured [of cesium-137] from Fukushima, it is a very small amount, is not going to harm anybody," Thakur of New Mexico State University said.

            "Samples of seafloor sediments show that the highest Cs-137 concentrations in sediments near to the Fukushima site measured 73,000 Becquerels (Bq) per square meter, a unit of measuring concentrations of radioactivity. Now, this is a very high reading. To put this in perspective, we receive this amount of radiation every single day from natural sources; I received more than this on the 14-hour flight from New York City to Japan."

            • And what year did he say that code?

              I asked you not to do that silly crap on this information because it's important and you running off on some unrelated tangent takes away from facts that can help people

              Take that to "offtopic".

            • CodeShutdown CodeShutdown

              installment 2 of our 'aks a expert' series

              Q. can we read dangerous levels of fallout from Fukushima with a geiger?

              A. June 2011; On-site measurements at the west gate of the Fukushima Daiichi plant indicate the presence of I-131 and Cs-137 in the air in the close vicinity of the plant (within approximately 1 km). The concentrations in air reported for 29 May were about 3 Bq/m3 for I-131 and about 9 Bq/m3 for Cs-137. To put this into perspective, a survey conducted in public elementary schools in Canada showed, on average, school occupants are exposed to radon concentrations of 56 Bq/m3, which is generally below the Federal guideline levels (i.e., 200 Bq/m3)

              • CodeShutdown CodeShutdown

                Installment three of our 'Akth an Exthpert Theries' (say it like Daffy Duck)

                Q: But radiation from Fukushima has been detected within the United States?
                A: Yes. That’s because we are able to detect very small amounts of radiation.
                These trace amounts are detectable even though they don’t add to peoples’ everyday exposure by
                more than one part in 100,000. The radiation from Fukushima, though detectable, is nowhere
                near the level of public health concern, according to the EPA, the CDC, and the FDA.
                Monitoring will continue, however, to make sure nothing changes.


        • CodeShutdown CodeShutdown

          if the daily variation is 15 to 31 CPM of 'background' and a harmful dose of fallout might only increase the measurement by one CPM, what is the value?

          • The ONLY VALUE is early warning…

            If a release happens in your area, a simple GM counter will jump in readings exponentially, that's the only value in studying these numbers…

            Your smoke detector doesn't know what's in the smoke, it only knows there is smoke. To find out what's in the smoke takes time you don't have in the event of a house fire. Those facts will be determined later but won't help you when you are sleeping and a fire breaks out in your home.

            It's EXACTLY the same with GM counting. What can take days to determine doesn't matter when it's time to move or die in a matter of a few moments.


            So the smoke alarm goes off, you wake up realize there is a fire and take appropriate action. Then you find out what actually caused the fire through proper investigation.

            Radiation is the same when counting with a GM counter.

            So the Geiger (your early detector) goes off and you take the appropriate actions quickly, then the investigation (scintillation) as to what it was that caused it ensues because you are still alive to investigate.

            So a GM is a radioactive smoke detector of substances that can not be seen, smelled or tasted.

            A scintillation test is the investigation into what caused it (what exact substances are there) and takes a long time to complete.

            A cheap GM detector is early warning (like a smoke detector) if you already know your averages over time.

            Scintillation tests determine the exact cause later…

            • CodeShutdown CodeShutdown

              the Geiger is only useful as an early warning system. So lets say the daily fluctuation is from 15 to 30 cpm and all of a sudden it shoots up to 16 CPM instead of 15 CPM. How will you know you just got a dangerous level of fallout or if its part of the natural fluctuation?

              This is impordint

          • AirSepTech AirSepTech

            No value at all without knowing what it is and the direction from which it came.

            When someone finally gets serious, and puts 360deg coverage around known sources, and tracks that, maybe people have a chance.

            The rest is guesswork, shittium in the wind.

            Makes about as much sense as having a seismograph in your front yard as a bomb detector.

          • "if the daily variation is 15 to 31 CPM"

            Great question…

            This is why we have averages over a month or a year to reference to (refer to the posting above on understanding what normal is).

            So a GM-320 stock alert level is 50 for that instrument. But 50 may be too high or too low depending on where you are and where it's located…

            If my overall average is 10, setting the alert at 50 may be a stretch, go for 30 to 40 before the alarm goes off…

            If my average is 30 at my location upping the alarm value to 60 may be a good idea.

            I hate when people are woken up by a smoke alarm if nothing was on fire because someone was smoking a cigar or a cigarette (me especially) in the middle of the night.

            And false alarms are ignored after a while and if a real problem occurs, you can't sleep through it or you are done.

            • CodeShutdown CodeShutdown

              HD you appear to miss the point. If the daily variation is larger than the small increase that signals a nuke event, then you wont be able to detect it.
              So if the variation is 15 to 30 CPM, average of 22.5 and you set the alarm for 25 CPM, the alarm will be sounding when there IS NOT a nuke event, yet WILL NOT SOUND when there IS one, if the fallout only increases the CPM 1 or 2 CPM. And that may be a dangerous level of fallout.

              Im sure that now you can see the point

      • CodeShutdown CodeShutdown

        "50 is considered alert level on a GMC-320" based on the ICRP linear no threshold extrapolated from Hiroshima dose system. This system was found by the ECRR to underestimate danger from nuke fallout by 1 to several thousand times. It is of little use for determining fallout danger as was even admitted by ICRP ICRP Scientific Secretary Jack Valentin. Moreover I dont believe it detects alpha emitting particles.

        • Alpha doesn't matter when detecting a early release.
          There are plenty of other things (I-131 can be detected in spades) that a cheap GM counter can see…

          If you want to spend 500 or so you can get a windowed inspector that can detect Alpha but that's over kill for the smoke alarm application…

          May want to get that one for food sampling but that's not what the subject here is.

          I'll bet you have a 9 dollar smoke detector in your apartment and won't care what kind of smoke it is if there is a fire.

          • CodeShutdown CodeShutdown

            but it was shown that the most harmful fallout, the inadvertently consumed particles, dont correspond well with the other radionuclides. (Busby et al)

            But disregarding that, the levels you are measuring may be low, yet be harmful. You likely cant measure it. The radiation exposure to people in the U.S. only went up 1 part in 100,000 and Im pretty sure you cant detect that within the noise of your system.

            Yet we saw a dramatic die off of insects and birds, and Mangano for example saw a 35% increase in infant mortality (from memory, I cant remember the exact number) and also increases in birth defect

            This highlights the futility in using a geiger as an early warning system, and also the disparity between the ICRP dosimetry (used in your meter to derive a seivert estimate) and the ECRR data mainly from Chernobyl victims.

            • The only point is (some people are really hard headed) that you know there was a release in your area. The details don't matter at that moment, the only thing that matters is you know and take the actions necessary to find out later.

              That's not complicated, if you dont see a readout screen on your home smoke detector to know what's ion the smoke it's because knowing exactly what's in that smoke won't help you…

              It's the knowing there is a fire in seconds that helps you.

              Finding out what is in the smoke is moot.

              • CodeShutdown CodeShutdown

                HD, I understand your statement "The only point is (some people are really hard headed) that you know there was a release in your area. The details don't matter at that moment,"

                But if you cant measure the small increase from a nuclear accident or intentional release, then it was futile. Actually worse than futile because you falsely believe you and the children are safe.

                Even with the best detection, they say fukushima uptick in radiation was 1 part in 100,000. Now we may not believe they are telling the truth there, but the point remains, the amount can be very small…undetectable with your equipment…and be a dangerous nuke fallout event.

                Why do you say people should not listen to me? I quoted your experts. So right, dont listen to me, listen to them, Im good with that.

                Now if you live within a few miles of a nuclear reactor, a geiger could be a warning system. You would have to monitor it every hour or less to be effective.

            • Code is a complete example of who not to listen to…

  • Continued from previous page….

    Evidence of a release at the McGuire Nuclear Station in North Carolina?

    Lake Norman in North Carolina shows higher than expected levels of radiation?

    Ocular cancer Huntersville, NC:

    Dr. Michael Brennan is a retired eye doctor that is coordinating a study to try and learn more. Brennan says he's working roughly 20 cases of people that have lived near or around Huntersville. A majority of the patients have been women.

    “We want a life story from the patients to determine their geographical frequencies and their time frequencies,” said Dr. Brennan. “There does not appear to be a familial transmission.”

    Thyroid Cancer Mooresville, NC:

    "Businesses and neighbors in Mooresville are pooling their resources to find out if something in the community is making people sick.

    It started when a local teen was diagnosed with thyroid cancer and her mother learned dozens of people in her zip code are facing the same type of sickness"

    • danger kitty danger kitty

      Thanks for shining a light on this, MVB.
      You're right, the IAEA has to know where this is coming from. And they're not telling. That's very telling.
      What was that concept the nukers came up with after 3/11?
      Did a bunch of papers & seminars on it? Oh yeah,- Lessons from Fukushima.
      Clearly, the only lesson from Fukushima the nukers care about is denial, secrecy.

  • If you are wondering about true readings from non reading….

    Listening to someone that is listening to a click and guessing?


    Click here first…

    Then listen to this one…

    It's the bomb…


    What have the folks been drinking? Thinking? Pills? You gotta prescription for that crap? Really??

    Good luck….

    How about this one…

    Fukushima: 7 years of Silence

    Don't actually pay attention if you can help it…



    3rd May 2018 – A single jawbone has revealed how much radiation Hiroshima bomb victims absorbed


    Whole-body radiation with about 5 grays – nearly half of the amount calculated from the jawbone – is enough to kill a person, Oswaldo Baffa, one of the researchers and a professor at the University of Sao Paulo, told The Washington Post.

    Using a technique called electron spin resonance, the researchers measured that the jawbone had absorbed 9.46 grays of radiation from the Hiroshima attack. (A gray or Gy is a unit used to measure the amount of radiation absorbed by an object or a person.

  • Fukushima is Now Officially the Worst Nuclear Power Disaster in History!

    27th April 2018 – Move Over Chernobyl, Fukushima is Now Officially the Worst Nuclear Power Disaster in History


    Total atmospheric releases from Fukushima are estimated to be between 5.6 and 8.1 times that of Chernobyl, according to the 2013 World Nuclear Industry Status Report. Professor Komei Hosokawa, who wrote the report’s Fukushima section, told London’s Channel 4 News then, “Almost every day new things happen, and there is no sign that they will control the situation in the next few months or years.”

    Contamination of soil, vegetation and water is so widespread in Japan that evacuating all the at-risk populations could collapse the economy, much as Chernobyl did to the former Soviet Union. For this reason, the Japanese government standard for decontaminating soil there is far less stringent than the standard used in Ukraine after Chernobyl.

  • Southern Hemisphere April 2018 Background Level Report

    Read below, or view entire Southern Hemisphere April 2018 report, plus charts and screens shots at CafeRadLab on one page here.

    Station location

    This short animation of Northern and Southern Hemisphere air circulation, shows why we can get detections so far south.

    This month the GammaScout Geiger Counter used for data logging local background, developed a fault. I managed to get it working again, but in the process lost some day average logging data, hence the gap in the chart.

    April month averages tend to vary from year to year by a significant amount. As the Southern Hemisphere winter approaches, air flows here swing a lot between Northern Tropic air to Southern Ocean air flows. If we get more tropical air in April the background goes up. If there are more Southern Ocean air flows, the month average goes down. Since Fukushima, this has become a dynamic of the local background monitoring. If you look at the charts on the yearly average background page, link below, you can clearly see an annual winter background dip showing up in the year and month background charts.

  • Japan

    14th March 2018 – Measuring Radioactivity in Soil and Dust Samples from Japan


    Among the five categories of locations, the Tokyo sample set had the lowest radioactivity mean of 117.6 Bq/kg. The following locations are ordered by increasing mean of radioactivity: Azuma Sports Park samples (2703.9 Bq/kg), main tourist routes samples (3206.0 Bq/kg) and proposed torch route samples (7896.0 Bq/kg). Only one of the non-Olympic samples, which originates from the Entrance to Fukushima Dai-ichi waste mounds, had a radioactivity of 14119.8 Bq/kg. Due to this outlier, this sample set was omitted from the other sets.

    The measured results showed that the Tokyo sample set had the lowest radioactivity level, which was understandable based on its significant distance from the Fukushima Nuclear Power Plant. On the contrary, the proposed torch route samples had the highest mean radioactivity due to their close proximity to the plant. Based on the measurement, we estimated qualitatively that the radiation exposure of people living near the Azuma Sports Park area was 20.7 times higher than that of people living in Tokyo. The main tourist and proposed torch routes had radiation exposure of 24.6 and 60.6 times higher, respectively, than in Tokyo.


    29th January 2018 – Uranium Dioxides and Debris Fragments Released to the Environment with Cesium-Rich Microparticles from the Fukushima Daiichi Nuclear Power Plant


    We report, for the first time, the atomic-scale characteristics of nanofragments of the nuclear fuels that were released from the FDNPP into the environment. Nanofragments of an intrinsic U-phase were discovered to be closely associated with radioactive cesium-rich microparticles (CsMPs) in paddy soils collected ∼4 km from the FDNPP.

    These results document the heterogeneous physical and chemical properties of debris at the nanoscale, which is a mixture of melted fuel and reactor materials, reflecting the complex thermal processes within the FDNPP reactor during meltdown. Still CsMPs are an important medium for the transport of debris fragments into the environment in a respirable form.



    These small very hot particles have been blown all around world and particularly in Japan. A number of tests have found these types of nano sized particles in house hold vacuum cleaner dust and air filters in Japan.

    Video: Airborne Radiation Spread

    Talking Stick TV interview with Marco Kaltofen on how radiation spreads via airborne dust particles.

  • USA

    Radium contamination in public water systems nationwide. (Interactive MAP)


    Radium concentrations in drinking water are drawn from EWG’s Tap Water database, and represent the average of all samples of treated drinking water collected from 2010 to 2015 for each water system. Samples reported as non-detections are entered as zero, which could underestimate the actual radium concentration in drinking water.

    Federal drinking water regulations set a Maximum Contaminant Level, an enforceable legal standard, of 5 picocuries per liter (pCi/L) for the combined level of two isotopes of radium: radium-226 and radium-228. Some water utilities and states report individual levels of these isotopes, while others report a single combined radium value of a specific sample. When the combined level was not reported by the water utility, EWG added measurements of radium-226 and radium–228 to calculate it, as available.

  • Southern Hemisphere May 2018 Background Level Report

    Station location

    This short animation of Northern and Southern Hemisphere air circulation, shows why we can get detections so far south.

    A nice quiet month without any significant background events. As most of the air flows here during this season come from a southerly direction, May local background levels were much lower than the summer months

    May 2018 day average background chart, (What the bar chart colour codes mean.)

    Caloundra May month average, year comparisons.

    2018 12% above pre-Fukushima average
    2017 7% above pre-Fukushima average
    2016 12% above pre-Fukushima average
    2015 4% above pre-Fukushima average
    2014 13% above pre-Fukushima average
    2013 7% above pre-Fukushima average
    2012 7% above pre-Fukushima average

    Disclaimer: This is an amateur volunteer run service. Human error can provide incorrect information, and equipment malfunction can produce false readings. Do not rely on, or take action upon information presented on this web site, without further research.


    2018 – Current radiological situation in areas of Ukraine contaminated by the Chernobyl accident: Part 1. Human dietary exposure to Caesium-137 and possible mitigation measures


    This study reports for the first time temporal trends for the period of 2011–2016 in 137Cs content in cow’s milk originating from private farms and households of 14 settlements located in the territories of the Rivne region, Ukraine. These areas are still radioactively contaminated as a result of the accident at the Chernobyl Nuclear Power Plant (ChNPP) in 1986. In 2016, the average 137Cs activity concentration in milk exceeded the Ukrainian Permissible Level (PL) for adults of 100 Bq/l in samples from 6 settlements and the PL for children of 40 Bq/l in 8 settlements, reaching activity concentration of around 500 Bq/l in some samples.

    In the absence of governmental programs for implementation of necessary protective measures to reduce radiological risks to impacted populations, the exceedance of PL for the activity concentration of 137Cs in cow’s milk for adults of 100 Bq/l in the Chernobyl-affected areas of Ukraine could persist for many more years – until at least 2040.


    7th June 2018 – Study: Cesium from Fukushima flowed to Tokyo Bay for 5 years


    Five months after disaster caused the triple meltdown at the plant, Yamazaki detected 20,100 becquerels of cesium per square meter in mud collected at the mouth of the Kyu-Edogawa river, which empties into Tokyo Bay.

    In July 2016, the study team detected a maximum 104,000 becquerels of cesium per square meter from mud collected in the same area of the bay, Yamazaki said.


    Perhaps a noteworthy detection early June 2018: 2 million Bq/m^3 of Cs-137 in Southern Czech Republic. See also various other posts from around this time period (April-June 2018)


    Shortly after EURDEP stopped the data flow to its far better "old" Advanced Map interface.


    10th May 2018 – Kiwis fear cancer after working near leaky US nuclear reactor in Antarctica


    Jim got cancer and died, in 2012. Pam Landy spent long years fighting the US Department of Veterans Affairs to acknowledge Jim’s cancers and get survivor benefits. In November 2017, an appeal body within the department called the Board of Veterans Appeals ruled in her favour.

    The board ruled Jim Landy had “esophageal, stomach, liver, and brain cancers due to exposure to ionising radiation”. McMurdo was identified as the only likely source and given that he didn’t work in the nuclear power plant, the exposure must have been “by virtue of merely serving there”.


    I have seen this same story play out so many times now. When servicemen or members of the public are exposed to nuclear contamination, governments and corporations draw out legal and compensation proceedings for decades. Their strategy is to delay proceeding until most of the claimants are dead and buried, or they just give up.

  • Spikes detected on Australian monitoring stations located in Tasmania and Caloundra.

    Very surprised to find this significant detection showing up on the Caloundra 24 hour chart for the 7th of July. There had been an up tick in background at the beginning of July compared to June 2018, but the 52% above day average detection was a shock. Wind direct at the time was from inland Australia which was also very surprising.

    See Nullschool 7th July wind chart for Caloundra.,-32.79,1247

    Caloundra Station location:

    Caloundra 24 hour 60 second sampling chart for the 7th July.

    A few days before the Caloundra detection, a contact in Tasmania informed me of spikes in his local background. These spikes in background in Tasmania were detected on two separate detectors. On the 4th July the Tasmanian wind direction source was also off the Australian mainland.,-28.21,815/loc=146.465,4.276

    Tasmania, 4th July chart

    Tasmania, 6th July chart

    Caloundra day average chart

  • Mueller subpoenas Jerome Corsi, birther and ex-Alex Jones associate

    “…Corsi, who has written such books as 'Where’s the Birth Certificate?' and 'Killing the Deep State: The Fight to Save President Trump' will fully comply with the Mueller team’s subpoena, according to attorney David Gray.

  • Southern Hemisphere August 2018 Background Level Report

    Station location

    This short animation of Northern and Southern Hemisphere air circulation, shows why we can get detections so far south.

    Since the Fukushima Nuclear Catastrophe, the long term August month averages are showing a gradual increase background levels.

    August 2018 day average background chart,

    Caloundra August month average, year comparisons.

    2018 12% above pre-Fukushima average
    2017 17% above pre-Fukushima average
    2016 8% above pre-Fukushima average
    2015 5% above pre-Fukushima average
    2014 4% above pre-Fukushima average
    2013 8% above pre-Fukushima average
    2012 9% above pre-Fukushima average

    Cairns August Report – "All pretty level, no significant peaks." The Cairns monitoring station has two GammaScout Geiger counters.

    Monthly and yearly average charts from 2007 to 2018.

    Disclaimer: This is an amateur volunteer run service. Human error can provide incorrect information, and equipment malfunction can produce false readings. Do not rely on, or take action upon information presented on this web site,…

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