[NZ4O Spaceweather] Discussion Of Solar Space & Geomagnetic Weather Conditions

[Thomas F Giella NZ4O]

Published on Tuesday October 09, 2012 at 1400 UTC. Valid for the next 24 
hours.


1.) DISCUSSION OF SOLAR, SPACE & GEOMAGNETIC WEATHER CONDITIONS THAT CAN 
IMPACT MF & HF RADIO WAVE PROPAGATION IN A NEGATIVE MANNER-

The geomagnetic storm continues into a second day.

The Kp has been at a 6 for the past 6 hours, which is moderate geomagnetic 
storming. The Boulder, CO K index has been at a 6 for the past 9 hours, 
which is moderate geomagnetic storming. The F2 layer maximum useable 
frequency (MUF) continues to be below 10 and 12 meters.

The excessive numbers of energetic electrons are spiraling down Earth's 
magnetic field lines into the equatorial ring current producing a lower MUF 
also at mid and low latitudes. It will take 36-48 hours for the geomagnetic 
storming to subside and the MUF to climb above 12 and 10 meters.

For the 11th day in the row the daily sunspot number has languished below 
100, currently at 41.

On the medium frequency (MF) band there exists abnormally high absorption of 
RF signals through the E layer related to the ongoing geomagnetic storm. The 
RF signal absorption will move southward to mid and low latitudes and last 
for up to 72 hours.

Also on the medium frequency (MF) band there exists the normal high 
absorption of RF signals through the D layer due to incoming cosmic rays and 
hard x-rays. Also the background x-ray flux is running in the M range so 
there is even more significant absorption of RF signals through the D layer.



73 & GUD DX, 
Thomas F. Giella, NZ4O
Lakeland, FL, USA
nz4o at tampabay.rr.com

NZ4O Amateur & SWL Radio Autobiography: http://www.nz4o.com
NZ4O "Daily" HF/6M Radio Wave Propagation Forecast: 
http://www.solarcycle24.org
NZ4O "Daily" Solar, Space Weather & Geomagnetic Data Archive: 
http://www.wcflunatall.com/nz4o1.htm
NZ4O Solar Space, Weather & Geomagnetic Data Dashboard: 
http://www.wcflunatall.com/nz4o2.htm
NZ4O Solar Cycle 24 Forecast Discussion & Archive: 
http://www.wcflunatall.com/nz4o4.htm
NZ4O 160 Meter (MF) Radio Propagation Theory Notes: 
http://www.wcflunatall.com/nz4o5.htm
NZ4O Solar Space Weather & Geomagnetic Raw Forecast Data Links: 
http://www.wcflunatall.com/nz4o6.htm
Solar Cycle 24 dot org on Facebook: 
http://www.facebook.com/pages/SolarCycle24org/139198369462931