It’s been a couple of weeks since I ran the monitor here at Lumby BC and even longer since I put anything up on this site. Here is a summary of the last readings I took before taking a break:
Start: Fri Jun 24 13:54:43 2011
End: Tue Jun 28 23:51:43 2011
Total time: Days:4 Hrs:9 Mins:57
Min: 3æR/hr First-Last: Tue Jun 28 19:09:43 2011–Tue Jun 28 19:09:43 2011
Max: 31æR/hr First-Last: Tue Jun 28 22:37:43 2011–Tue Jun 28 22:37:43 2011
File’s Time Base Unit: 60 secs. Time Base Units per point: 1
Average æR/hr: 14.3
Nothing out of the ordinary, in fact the average had been down a bit from steady at 14.5 micro roentgens/hr to 14.3.
I re-started the monitor today just to check on things and noticed readings were a bit higher for the first few hours. Then a heavy rain came at around 4:00PM.
Average reading for the last hour (7:00PM to 8:00PM) is 77.2 micro Roentgens/hr
I’ll try to keep you posted on this site as more info comes in and update the readings as soon as I am able.
I guess the good news is that although the readings went a lot higher, they do seem to be heading back down again. The rain has stopped for now.
Well here it is 10 hours later and readings seem to be coming back to normal – about 14.5 micro Roentgens/hr. See chart below with the extra data added.
Should we be concerned? Well, I first took outside readings with this same RM-60 monitor 20 years ago here at lumby. I’ve been keeping an eye on the background radiation levels since the Japanese nuclear disaster and this is the first time I have ever seen anything like this. Even several days after the reactor containment blew in Japan there was only an increase from 14.5/hr to 16.5/hr during a rainfall. I have just witnessed 1 minute readings of over 300/hr! and 60 minute averages in the high 80’s!
I am not putting this up here to scare people, but I think if we are aware at least we know enough to ask questions and hopefully get some answers.
Here is more information on related matters.
There are links to other monitoring sites on the web provided by Aware Electronics, the maker of my RM-60.
One of these, by: Akio Hasegawa, M.D., PhD, Pathologist, Odawara, Kanagawa, Japan is especially interesting.
The Denphone site in Tokyo has only recorded elevated readings up to the mid 50’s micro Roentgens/hr in March 2011. You can find the link at Aware’s site.
I haven’t been able to find any other spikes in North American readings yet but nothing is closer than coastal Washington state or California.