Re: [IRCA] the big black absorptive cloud

[Russ Edmunds <wb2bjh@xxxxxxxxx>]

--- Nick Hall-Patch <nhp@xxxxxxxx> wrote:

> At 14:40 03/11/2007, you wrote:
> >Hi Nick,
> >where do you find info about this cloud? I also noticed the same 
> >wipeout here. Everything looked excellent still at 1200.
> 
> 
> I wish I knew, Mauno; I was joking at the time, but it seems to be a 
> very real phenomenon, and one which, to my limited knowledge, still 
> doesn't really have an observable solar / geomagnetic parameter 
> associated with it.   What has changed since a day or two ago which 
> has caused all long distance signal strengths to deteriorate so
> markedly?

In terms of the MidWinter Anomaly on MW going back to the 1960's, it's
extremely early for such. Further, "Classic MwA" conditions are not
usually - at least on the EC - associated with a lack of signals but
rather a lack of anything of any real interest - the regular
powerhouses should still be there. I'm not convinced that this isn't
something more transitory, such as a localized geomagbnetic
disturbance, which of course, we will see. 



Russ Edmunds
Blue Bell, PA ( 360' ASL )
[15 mi NNW of Philadelphia]
40:08:45N; 75:16:04W, Grid FN20id
<wb2bjh@xxxxxxxxx>
FM: Yamaha T-80 & Onkyo T-450RDS w/ APS9B @15'
AM: Hammarlund HQ-150 & 4' FET air core loop

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