[HCDX] Re: [Propagation] Strong to Severe Geomagnetic Storming Occurring

On Fri, 7 Jan 2005 20:26:34 -0500, Thomas Giella KN4LF [EMAIL PROTECTED] wrote: As hard as it may seem to believe no other global propagation forecasting entity whether it be governmental, educational or private predicted this geomagnetic storm. Actually, the storm was predicted by several

[HCDX] NW7US Aurora watch - and Flare Activity Bulletin 15 Jan 2005

On January 14, 2005, there was a small solar flare that was located on the solar central meridian. The associated plasma that was ejected, directed squarely toward Earth, will arrive simultaneously with an already elevated solar wind stream. It is expected that the geomagnetic activity

[HCDX] Coronal Mass Ejection detected: Major Geomagnetic Storm Predicted

NW7US Propagation Update (15 January 2005 0840 UTC) During the series of flares from solar sunspot region 0720, at 0614 UTC 15 January 2005, a strong solar flare and radio sweep event was observed. This indicates a full-halo coronal mass ejection (one that is headed directly toward Earth).

[HCDX] NW7US Propagation Update Bulletin 16-I-2005 0430 UTC

NW7US Propagation Update Bulletin 16-I-2005 0430 UTC At the time of this bulletin, we've just witnessed another long-duration flare. This is the strongest of the flares so far unleashed by active sunspot region 720 (NOAA 10720). This flare was a major X2.6-class event that peaked at 2302

[HCDX] Radio AU reported

I am receiving reports on Radio AU detected in North America. The solar wind speed is elevated, and the interplantary magnetic field (IMF) is oriented southward (negative Bz). I am anticipating the arrival of two coronal mass ejections, and perhaps we have already seen the passage of the

[HCDX] NW7US Alert: Precursor to Geomagnetic Storm detected (0640 UTC 17-I-2005)

Energetic Ion Enhancement Event ( see http://www.agu.org/pubs/crossref/2004/2003JA010044.shtml ) At 0640 UTC 17-I-2005, ACE detected a proton flux exceeding 1.0e+05 p/cm2 - which simply indicates the probable arrival of the plasma cloud expected from the flare events reported earlier. It

[HCDX] Solar Wind Speed Shock detected - Geo-Storm in 12 hours : Update 0716 UTC 17-I-2005

In addition to the Energetic Ion Enhancement Event of 0640 UTC 17-I-2005 (see my last update), a moderate shock has been detected in the solar wind speed at 0716 UTC, 17-I-2005. The plasma density change was 3.4 part/cc, with an increase in speed of 78 km/s, and a temperature increase of

[HCDX] Is HF propagation reciprocal? (and, De-mystifying HF propagation)

Hello, fellow SWL'er and potential Amateur Radio Operator: I'm letting this list know about some additions to my website ( http://hfradio.org/ ). These new pages contain information that many radio operators will find useful (based on the feedback I have gotten from this material when the