A severe geomagnetic storm (G4) is in progress due to the
arrival of coronal hole mass ejections related to the
returning sunspot group 484, now numbered 501. Some
reporting stations show a K index of 9. The current
planetary K index (Kp) is 8 and the Aurora index is 10.
This is expected to possibly increase to a Kp of 9,
a geomagnetic storm level G5, through the day. HF
conditions are poor. MW conditions are poor.
Visual Aurora is possible today at low-latitudes.
Aurora-mode propagation (Au and Au-Es) is possible and is
already reported. Visual Aurora is occurring now in night
regions, and is possible to occur tonight during darkness
in the Western Hemisphere (e.g., North America).
More information as events warrent will be posted in follow-up
bulletins. Live information is on-going at
http://prop.hfradio.org/ and a discussion is at
http://hfradio.org/forums/
73 de Tomas, NW7US (AAR0JA/AAM0EWA)
--
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: A creator of solutions -- http://accessnow.com/ -- Perl Rules! :
: Washington State MARS Emergency Operations Officer - (AAM0EWA) :
: WA State Army MARS Webmaster for http://wa.mars.hfradio.org/ :
: 10x56526, FISTS 7055, FISTS NW 57, A.R. Lighthouse Society 144 :
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