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OK0NAG > SOLAR 11.01.18 17:49l 84 Lines 2664 Bytes #999 (0) @ EU
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Subj: Weekly Forecasts Bulletin
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To: solar@eu
Subject: Weekly Forecasts Bulletin
Date: Thu, 11 Jan 2018 17:29:10 +0100
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Solar activity forecast for the period January 12 - January 18, 2018
Activity level: mostly very low
X-ray background flux (1.0-8.0 A): in the range A2.5-A6.0
Radio flux (10.7 cm): a fluctuation in the range 66-76 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 0-40
Martina Exnerova
RWC Prague, Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
Geomagnetic activity forecast for the period January 12 - January 18, 2018
Quiet: Jan 12, Jan 17 - 18
Unsettled: Jan 14 - 17
Active: Jan 12 - 13
Minor storm: possible Jan 13
Major storm: 0
Severe storm: 0
Geomagnetic activity summary:
We expect the maximal geomagnetic activity the coming Saturday, January
13. This prediction is related to CH HSS from the coronal hole 59/+4
although the probability of storming event is lower than 27 days ago.
Till this day (Friday, January 12), we expect quiet condition with
unsettled or active event late evenings.
Since Sunday, January 14, we expect geomagnetic activity decrease to
unsettled level. The last two days, 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 January 12 - February 7, 2018
Geomagnetic field will be:
quiet on January 19, 26, 31, February 7
mostly quiet on January 18, 25, 30, February 3, 6
quiet to unsettled on January 12, 15, 20, 24, 29, February 2, 5
quiet to active on January 14, 16, 21, 23, 27 - 28, February 1, 4
active to disturbed on January 13, (17,) 22
Amplifications of the solar wind from coronal holes are expected
on January 12 - 14, 19 - 20, (21 - 22, 28 - 31,
February 1,) 5 - 6, (7)
Remark:
- Parenthesis means lower probability of activity enhancement.
- Current forecasts still is less reliable again.
New Year's compliment - version for normal people :)
http://ok1hh.sweb.cz/PF2018HH_afj.JPG
Ham radio version:
http://ok1hh.sweb.cz/PF2018HH_ahh.JPG
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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