Loup: what kind of "window" in two weeks were you referring to? solar activity?
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Yes, both directly and indirectly. The magnetometers that I have set out, as well as the ones that the V.T. group has, all are "singing" with both fast responses, and general, but small, swings. The bar magnet compass based one has shifted almost half a degree in the last 30 days, so there is continued stress in the area that is warping the lines of flux and changing the local declination. The HMC5883L based one (
http://www.parallax.com/Store/Senso...efault.aspx?SortField=ProductName,ProductName ) showed some serious changes when the solar CMEs were hitting us a week or two ago, but are still showing changes now. They had some rather erratic changes about three hours before the quake we just had here, so there is some warning to be seen with them. The bar magnet one did not move much, so it proves that the precursor signals are relatively high frequency and an averaging system like the bar magnet variety may not show all the details of a precursor.
The ELF-LF receiver also has been showing some stronger signals lately, starting about the day before the quake here a few nights ago. They are still fairly strong, so I don't think that the stress is over.
The last tidbit of info, I actually find the most interesting. I good friend of mine pointed it out to me, and now a bunch of us are checking it out. He noticed that the local AM radio stations are working LOS only, relying on groundwave ONLY. Now, some of that is normal this time of year as propagation effects change and the D and E layers start growing more "pumped", and as the temperature changes down on the surface start to heat things up in the lower atmosphere. But, normally the skywave opens back up fairly evenly at night. Now we are having NO local skywave (think NVIS) reception, and only VERY directional skywave reception from medium distance other cities. We can pick up, almost perfectly, all of the stations in a straight line from NC, to Canada, going through Ohio, Illinois, and Wisconsin, while stations in New England and further south of us that NORMALLY come in clear at night year round, aren't coming in clear at all. It's almost as if there is a corridor between there and here, and everything else is blocked out. This same friend of mine also pointed out that we were having earthquake clouds showing up the day and evening before the quake here a few days ago (and he alerted me before the quake happened to go look for them. They were running about 50 miles east of where I am, and probably ran for a few hundred miles, mainly southward. Again, this lines up with the quakes in NC, SC, and GA.
The sun is rolling around for another pass, and we are heading for the next new moon in three weeks, so something could happen on the ramp-up. The program that they have is showing a fairly decent sized increase in probability then, nothing major, just something to watch out for.
I don't think anything massive will happen yet, but we need to keep a watch on these reports. I don't think that the New Madrid will hold out till solar max ends next year.
Loup
