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 that the CME was directed Earthward. It was. It has hit, today, and we are now seeing a planetary K index (Kp) of 8, with a reading from Boulder at 7. At the time of this bulletin, the Bz is strongly positive, decreasing the full impact on geomagnetic activity. However, we're watching the IMF closely, becuase if it does turn southward, what is already a major/severe geomagnetic storm will increase even more in strength.
Of course, the dynamic pressure of this passage is very high, and the speed is over 950 km/s. At the same time, the proton storm is finally ending. Aurora is very possible for North America this evening. Certainly, Aurora is active over Asia/Europe. With a Kp of 8, it is possible that radio propagation via Aurora is in the cards for today/tonight. 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 : ---[Start Commercial]--------------------- World Radio TV Handbook 2005 is coming out. Preorder yours and support open communications for DXers: http://www.amazon.com/exec/obidos/ASIN/0823077942/hardcoredxcom ---[End Commercial]----------------------- ________________________________________ Hard-Core-DX mailing list [email protected] http://dallas.hard-core-dx.com/mailman/listinfo/hard-core-dx http://www.hard-core-dx.com/ _______________________________________________ THE INFORMATION IN THIS ARTICLE IS FREE. It may be copied, distributed and/or modified under the conditions set down in the Design Science License published by Michael Stutz at http://dsl.org/copyleft/dsl.txt
