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OK0NAG > SOLAR 08.02.18 20:08l 85 Lines 2628 Bytes #999 (0) @ EU
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Subj: Weekly Forecasts Bulletin
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Subject: Weekly Forecasts Bulletin
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Date: Thu, 8 Feb 2018 19:03:49 +0100
Solar activity forecast for the period February 9 - February 15, 2018
Activity level: mostly very low to low
X-ray background flux (1.0-8.0 A): in the range A4.0-B1.0
Radio flux (10.7 cm): a fluctuation in the range 70-82 f.u.
Events: class C (3/period), class M (0/period), class X (0/period), proton
(0/period)
Relative sunspot number (Ri): in the range 0-40
Martina Exnerova
RWC Prague, Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
Geomagnetic activity forecast for the period February 7 - February 15,
2018
Quiet: Feb 7 - 8, 11 - 15
Unsettled: Feb 9 - 10, 14 - 15
Active: unlikely Feb 10, 11, 15
Minor storm: 0
Major storm: 0
Severe storm: 0
Geomagnetic activity summary:
The solar activity is currently very low. Next week, we expect at most
quiet to unsettled conditions. The unsettled episode is possible during
the coming weekend (February 10 - 11) and also at he end of forecasted
period (February 15). These unsettled events can be accompanied by an
isolated active episode but this is less probable. At the end of
forecasted period, we expect more unsettled conditions. But they should
not exceed the active level. The same forecast is passed fot the first
unsettled / possibly active event between February 10-11.
Tomas Bayer
RWC Prague
Institute of Geophysics of the ASCR, Prague
Department of Geomagnetism
Budkov observatory (BDV)
Geomagnetic activity forecast for the period February 9 - March 8, 2018
Geomagnetic field will be:
quiet on February 12 - 14, 20
mostly quiet on February 17, 23, 25 - 27, March 1 - 3, 5 - 8
quiet to unsettled on February 11, 15, 18 - 19, 21 - 22, 24, 28
quiet to active on February 9 - 10, 16, March 4
active to disturbed - not anticipated
Amplifications of the solar wind from coronal holes are expected
on February 5 - 6, 9 - 12, 18 - 19, 27 - 28
Remark:
- Parenthesis means lower probability of activity enhancement.
- With regard to ongoing changes, current forecasts are even less reliable.
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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