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OK0NAG > SOLAR 23.11.17 16:58l 76 Lines 2242 Bytes #999 (0) @ EU
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Subj: Weekly Forecasts Bulletin
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Date: Thu, 23 Nov 2017 15:49:53 +0100
Subject: Weekly Forecasts Bulletin
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To: solar@eu
Solar activity forecast for the period November 24 - November 30, 2017
Activity level: mostly very low
X-ray background flux (1.0-8.0 A): in the range A3.5-A7.5
Radio flux (10.7 cm): a fluctuation in the range 67-78 f.u.
Events: class C (0/period), class M (0/period), class X (0/period), proton
(0/period)
Relative sunspot number (Ri): in the range 0-25
Martina Exnerova
RWC Prague, Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
Geomagnetic activity forecast for the period November 24 - November 30,
2017
Quiet: Nov 24 - 29
Unsettled: Nov 24 - 26, 29 - 30
Active: 0
Minor storm: 0
Major storm: 0
Severe storm: 0
Geomagnetic activity summary:
The solar wind has decreasing course, we expect also geomagnetic activity
decrease. Till November 30, we expect at most quiet to unsettled
conditions - in the middle of forecasted epoch at most quiet, at the start
and end of forecasted week, unsettled events are more probable.
Tomas Bayer
RWC Prague
Institute of Geophysics of the ASCR, Prague
Department of Geomagnetism
Budkov observatory (BDV)
Geomagnetic activity forecast for the period November 17 - December 20,
2017
Geomagnetic field will be:
quiet on November 26 - 29, December 3, 9, 14, 17
mostly quiet on November 24 - 25, December 8, 16
quiet to unsettled on December 2, 10, 15
quiet to active on November 30, December 6 - 7, 11 - 13, 20
active to disturbed on December 1, 4 - 5, 18 - 19
Amplifications of the solar wind from coronal holes are expected
on November 24 - 25, December (1 - 2,) 5, 7 - 8, 17 - 20
Remarks:
- Parenthesis means lower probability of activity enhancement.
F. K. Janda, OK1HH
(from Czech Propagation Interested Group
compiling this geomagnetic activity weekly forecasts since 1978).
e-mail: ok1hh(at)rsys.cz
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