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 sun
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 a
NW7US Propagation Bulletin Update 0930 UTC, 17 January 2005 It is clear now after analysis that the coronal mass ejection (CME) associated with the X2.6-class X-ray flare of 2302 UTC 15 January 2005
Flare update - 0952 UTC The entire HF spectrum is shut-down at the time of this e-mail, on the sunlit side of the Earth. Recovery time is 1 hour, 37 minutes (approx. 1130 UTC). The flare from region
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 n
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 ch
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
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
NW7US Propagation Update 17 January 2005 - 2030 UTC The latest long-duration flare from active solar region 720 (the flare measured X3.8 and X4.1, officially recorded as X3.8 at 0659 UTC 17-I-2005),
Active solar region 10720 (or, just 720) has spawned a great number of flares. So far, three of these unleashed coronal mass ejections directed toward Earth, and triggered proton events. The latest f
NW7US update / correction The dates in my last bulletin were stated as 17 and 18 January 2005. Please adjust those to 18 and 18 January. A slip of the fingers. Thanks. -- 73 de Tomas, NW7US (AAR0JA/A
The following is a corrected version of NW7US Propagation Bulletin 18 January 2005 - 1520Z Active solar region 10720 (or, just 720) has spawned a great number of flares. So far, three of these unleas
NW7US Propagation Bulletin / Update 19 January 2005 - 0030Z There is speculation that the coronal mass ejection unleashed by the X3.8 level flare from active region 720 may have arrived. It is very d
NW7US Propagation Bulletin 20 January 2005 - 1430 UTC At the time of this bulletin, active sunspot region 10720 (720) continues its flaring activity. Since the X3.8 flare of 17-I-2005 that peaked at
NW7US Propagation Bulletin Update 20 January 2005 - 1645 UTC This latest X-class flare, the THIRD LARGEST of this solar cycle (Cycle 23), was incredible. It unleashed an extreme (and very sudden) pro
NW7US Propagation Bulletin Update 21 January 2005 - 1945 UTC As I mentioned early on (see my recent bulletins), the X7 flare unleashed a coronal mass ejection. I had reported that it was probable tha
NW7US Propagation Bulletin 07 February 2005 Propagation today (07-II-2005) has turned poor on many HF circuits, due to a fast solar wind originating in a large coronal hole. This coronal hole is loca
For those of you with Web access on your Cellphone/PDA: I have updated (and have more updates coming soon for) the Space Weather/Propagation Center at http://wap.hfradio.org/ There, follow the Propag
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