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OK0NAG > SOLAR 24.08.17 15:25l 73 Lines 2156 Bytes #999 (0) @ EU
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Subject: Weekly Forecasts Bulletin
From: ok0nag <ok0nag>
Date: Thu, 24 Aug 2017 15:22:47 +0200
Solar activity forecast for the period August 25 - August 31, 2017
Activity level: mostly low
X-ray background flux (1.0-8.0 A): in the range A8.0-B4.5
Radio flux (10.7 cm): a fluctuation in the range 75-95 f.u.
Events: class C (0-5/day), class M (0-4/period), class X (0/period), proton
(0/period)
Relative sunspot number (Ri): in the range 11-80
Martina Exnerova
RWC Prague, Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
Geomagnetic activity forecast for the period August 24 - August 31, 2017
Quiet: Aug 26 - 29
Unsettled: Aug 24 - 25, 30 - 31
Active: Aug possible Aug 31
Minor storm: 0
Major storm: 0
Severe storm: 0
Geomagnetic activity summary:
Currently, an active episode has been recorded. At the Budkov observatory,
the local K-index didi not exceed level 4.
Thursday, August 24, we expect at most unsettled conditions. Next day,
Friday, August 25, we expect geomagnetic activity decrease to quiet to
unsettled level.
Quiet to unsettled conditions are predicted for the rest of forecasted
period. Only, at the end of August, active episode is possible about
August 31.
Tomas Bayer
RWC Prague
Institute of Geophysics of the ASCR, Prague
Department of Geomagnetism
Budkov observatory (BDV)
Geomagnetic activity forecast for the period August 25 - September 21,
2017
A next our Geomagnetic activity forecast will be issued on
August 31, because of the author's participation on the expedition.
Contrary to the ancient times when our publishing began, there
are other relatively reliable and usable resources today.
F. K. Janda, OK1HH
Czech Propagation Interested Group
OK1HH compiling weekly forecasts since January 1978
e-mail: ok1hh(at)rsys.cz
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