Two M Class Solar Flares and Radio Black Outs

[Thomas F. Giella NZ4O]

Updated 2100 UTC at http://www.wcflunatall.com/nz4o4.htm

Yet another M class solar flare occurred at 2028 UTC, this time an M1.7.  It
also produced a sudden ionosphere disturbance (SID) that absorbed radio
signals causing a radio black out that reached as high as 11000 kc on the
sun light side of the Earth.

Both M class solar flares are associated with recurrent sunspot group #11039
which is due to rise around the eastern limb of the Sun in the next day or
two.


Updated 2000 UTC at http://www.wcflunatall.com/nz4o4.htm

Associated with the M2.3 class solar flare was a sudden ionosphere
disturbance (SID) that absorbed radio signals causing a radio black out that
reach as high as 12000 kc on the sun light side of the Earth. This was the
first radio blackout of solar cycle 24.



Posted Tuesday January 19, 2010 at 1600 UTC at 
http://www.wcflunatall.com/nz4o4.htm

At 1324 UTC an M2.3 solar flare was detected. The source region is unknown 
at this time but it is likely that it was released by a sunspot group around 
the east limb of the Sun. This is the first M class solar flare for solar 
cycle 24.

The solar flux index values are 82.2 81.5 81.3 and the sunspot number 14.

On January 12th thanks to recurrent sunspot group #11040, the solar flux 
index (SFI) peaked at 95.4 and the sunspot number (SSN) 41, both record 
highs for solar cycle 24.

73 & GUD DX,
Thomas F. Giella, NZ4O
Lakeland, FL, USA
nz4o at arrl.net

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