[SADXA] A-index higher than flux
Jim Henderson
jim_kf7e at cox.net
Tue Mar 17 23:49:26 EDT 2015
AT 0000 UTC the SFI= 114, A= 117.
Not much difference in numbers, but I have only seen this a handful of times in many years.
More noticeable in years of lower SFI. But quite amazing now.
In 1985 April 20 or so, I saw the A-index was twice as high as the SFI. I was operating as XF4MDX
and the disruption to normal paths was just unbelievable. Bands were far from dead, but open to
places at the 'wrong' time and heading.
The event ongoing tonight is also 'one for the books'..
BTW the K has gone from 8 to 6 in the last 3 hours. I was hoping it would stay high into our
wee hours, on the slight chance of seeing the red glow characteristic here of strong aurora up north..
Alas.
KF7E
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