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

Thomas F Giella W4HM w4hm at tampabay.rr.com
Sat Feb 16 06:35:27 EST 2013


For Friday February 15, 2013

Solar activity is low as far as the emergence of the number of new sunspot 
groups. Currently there are 3 new un-numbered sunspot groups and 4 existing 
numbered sunspot groups.

Solar activity is low as far as the number of new solar flares, 4 occurred. 
The largest solar flare in magnitude was a very small in size B5.1, which 
occurred at approximately N19W70 and associated with sunspot group #11667.

The daily solar flux index (SFI) has been above 100 for 16 consecutive days, 
currently at 100.7.

The daily sunspot number (SSN) has languished below 100 for 31 consecutive 
days, currently (NOAA) at 59. That's an amazing statistic seeing that we are 
now at the peak of solar cycle 24.

The geomagnetic field has been quiet for one day with the Kp (planetary) 
index in the a 0-2 range. As collected by Potsdam Germany WDC the 3 hour Kp 
(planetary) intervals were unavailable. As collected by NOAA/SWPC the 3 hour 
Kp (planetary) intervals were 01111111.

The Dst ranged between +2 and -15.

Via SOHO the maximum and minimum solar wind values were unavailable.

The maximum background x-ray value was B2.1.

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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