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OK0NAG > SOLAR 01.02.18 20:29l 86 Lines 2456 Bytes #999 (0) @ EU
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Subj: Weekly Forecasts Bulletin
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Date: Thu, 1 Feb 2018 19:24:52 +0100
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Subject: Weekly Forecasts Bulletin
X-clacks-overhead: GNU Terry Pratchett
Solar activity forecast for the period February 2 - February 8, 2018
Activity level: mostly very low
X-ray background flux (1.0-8.0 A): in the range A2.0-A4.0
Radio flux (10.7 cm): a fluctuation in the range 66-74 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 0-35
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 2 - February 8, 2018
Quiet: Feb 2 - 4, 8
Unsettled: Feb 4 - 7
Active: unlikely Feb 5 - 6
Minor storm: 0
Major storm: 0
Severe storm: 0
Geomagnetic activity summary:
The solar activity is currently very low. Next three days (till February
4),
we expect quiet conditions. Since Sunday, February 4, unsettled
episodes are more probable although the geomagnetic activity increase
should not increase rapidly. The activity should stay at quiet to
unsettled level only the unsettled episodes should be frequenter. The last
day (Thursday, February 8), we expect quiet conditions return.
Tomas Bayer
RWC Prague
Institute of Geophysics of the ASCR, Prague
Department of Geomagnetism
Budkov observatory (BDV)
Geomagnetic activity forecast for the period February 2 - February 28,
2018
Geomagnetic field will be:
quiet on February 2, 5 - 8, 12 - 14, 20
mostly quiet on February 3, 9, 17, 23, 25 - 27
quiet to unsettled on February 11, 16, 18 - 19, 21 - 22
quiet to active on February 4, 10, 15, 24, 28
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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