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The background hard X-ray flux (1 to 8 Angstrom wavelength) is still low
(A-class). However, the flux has increased slightly in the past 24 to 48
hours. Trans-polar ionospheric propagation has been moderate to good in
the last 24 to 48 hours. Expect the same for the next 24 hours. HF
propagation is mostly normal over most paths.
The sunspot count will decrease by tomorrow (late July 8, 2010), and
possibly become zero. However, the possible sunspot region that is
rotating into view in the next 24 to 32 hours may make brief the
zero-sunspot period. Additionally, expect an increase in overall solar
energy starting this weekend, strengthening the ionosphere. It is possible
that the background hard X-ray flux (1-8 Angstrom wavelengths) will rise
into the B class over the weekend and through early next week.
The possible sunspot region that we are seeing rotate into view in the
next couple of days, is erupting with flares. If this is a true sunspot
region, with flares, expect quite an increase in both Maximum Usable
Frequencies (MUFs), but also some periods of Sudden Ionospheric
Disturbances lasting from 15 to 60 minutes (when a flare occurs).
Updates will be posted at <http://prop.hfradio.org> - as well as near-live
images.
Facebook:
<http://www.facebook.com/pages/Space-Weather-and-Radio-Resources-at-HFRadioorg/367220874615>
--
73 de NW7US, Tomas David Hood ( http://tomas-david-hood.com )
Contributing editor, Propagation Columns:
CQ Magazine, CQ VHF, Popular Communications
Main Page: http://hfradio.org/
Twitter Space WX : @hfradiospacewx
Twitter NW7US : @NW7US
Podcast: http://podcast.hfradio.org/ (restarting April/May 2010)
Linux User #32405 - Since 1996
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