NW7US Propagation Update
17 January 2005 - 1145 UTC
The solar wind speed is now (1145 UTC) exceeding 776 km/s with a
moderately southward orientation of the interplanetary magnetic field (Bz
= -6.6 nT). This rise in wind speed is rather sudden, after a long period
of it hovering around 600 km/s.
The Aurora activity energy level is increasing, measuring 1000 nT. The
GEOS Hp indicates a strong compression of the Magnetosphere.
This will induce strong ring currents and cause the geomagnetic field to
become strongly active.
Forecast for next 24 hours: Space weather for the next 24 hours is
expected to be strong. Geomagnetic storms reaching the G3 level are
expected. Solar radiation storms reaching the S2 level are expected. Radio
blackouts reaching the R3 level are expected. (See
http://www.sec.noaa.gov/NOAAscales/ for the scales used here).
73 de Tomas, NW7US (AAR0JA/AAA0WA)
: Propagation Editor for CQ, CQ VHF, Popular Communications :
: Creator; live propagation center http://prop.hfradio.org/ :
: Associate Member of Propagation Studies Committee of RSGB :
: US Army Miltary Affiliate Radio Service (MARS) SMD AAA0WA :
: 122.93W 47.67N / Brinnon, Washington USA CN87 CW/SSB/DIGI :
: Website/software/database design http://newwebmakers.com/ :
: 10x56526, FISTS 7055, FISTS NW 57, Lighthouse Society 144 :
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