[W4HM Spaceweather] W4HM Discussion Of Daily Solar Space And Geomagnetic Weather

Thomas F Giella W4HM w4hm at tampabay.rr.com
Tue Feb 26 08:35:23 EST 2013


For Monday February 25, 2013

Solar activity is moderate as far as the emergence of the number of new 
sunspot groups. Currently there are 5 new un-numbered sunspot groups and 3 
existing numbered sunspot groups.

Solar activity is low as far as the number of solar flares, 3 occurred. The 
largest solar flare in magnitude was a very small in size B8.9, which 
occurred at approximately S28E43 and associated with sunspot group #11680.

The daily solar flux index (SFI) has been below 100 for 3 consecutive days, 
currently (NOAA) at 95.9.

The daily sunspot number (SSN) has been below 100 for 5 consecutive days, 
currently (NOAA) at 59.

The daily SSN has been notably low considering we are at or just past solar 
cycle 24 maximum. Solar cycle 24 continues to languish as a very weak one, 
per my forecast first issued in February 01, 2008 at 
http://www.wcflunatall.com/nz4o4.htm .

The geomagnetic field has been inactive for 2 consecutive days with the Kp 
(planetary) index in the 0-2 range, which is quiet geomagnetic conditions.

As collected by Potsdam Germany WDC the 3 hour Kp (planetary) intervals were 
00001112. As collected by NOAA/SWPC the 3 hour Kp (planetary) intervals were 

The Dst ranged between 23 and -2. From here in central Florida MF radio wave 
propagation conditions improved enough for me to be able to log BSKSA Saudi 
Arabia on 1521 khz, albeit a pretty easy one with 2 million watts of output 

Via SOHO and sollen.info the maximum and minimum solar wind values were 

Via NOAA the maximum background x-ray solar flux value was B2.2.

For the latest solar, space & geomagnetic weather data go to 
http://www.wcflunatall.com/nz4o2.htm . For an explanation of how the above 
indices affect MF, HF and VHF radio wave propagation go to 
http://www.wcflunatall.com/nz4o5.htm .

To subscribe to the W4HM Daily MF/HF/6M Radio Wave Propagation Forecast 
Subscription Service go to http://www.wcflunatall.com/propagation.htm or 
http://www.solarcycle24.org .

73 & GUD DX,
Thomas F. Giella, W4HM
Lakeland, FL, USA
w4hm at tampabay.rr.com

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