[HCDX] NW7US Propagation Update: 9-XI-2003

[Tomas NW7US <nw7us@xxxxxxxxxxx>]

Geomagnetic activity is increasing, now, due to the
influence of fast wind coming from the coronal hole
located in the central meridian of the Sun.  The
rest of today's geomagnetic activity will be unsettled
to active (up to a Kp of 5).  This will degrade the
higher HF bands for the next two days.  By 11-XI-2003,
a large coronal hole which is rotating into
geoeffective position will inhance the solar wind
further, causing active to minor geomagnetic storm
conditions.

Three new sunpots have appeared on the Sun (Catania
numbers 86, 87, and 89).  These are now growing and
have what is known as a "beta magnetic configuration."
The may become a source of flares, at least C-class at
this time, causing some minor radio degradation on the
lower HF bands on the sunlit side of the earth.

The 10.7-cm flux is now expected to rise, again, with
these new sunspots.  Expected flux levels are 93, 95,
and 98 for today through Tuesday.  But, with the
increased geomagnetic activity, the higher bands will
still suffer.

More info at http://prop.hfradio.org


73 de Tomas, NW7US (AAR0JA/AAM0EWA)
--
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