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Solar activity forecast for the period October 12 - October 18, 2018

Activity level: mostly very low
X-ray background flux (1.0-8.0 A): in the range A1.4-A2.4
Radio flux (10.7 cm): a fluctuation in the range 67-73 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 October 12 - October 18, 2018

Quiet: Oct 12 - 13, 15 - 16
Unsettled: Oct 14, 17 - 18
Active: Oct 17 - 18
Minor storm: Oct 18
Major storm: 0
Severe storm: 0

Geomagnetic activity summary:
After the last storming effect (the K-index at level 5 had been reached October 7 and 10), we expect quiet to unsettled conditions return to Wednesday, October 17. At the end of forecasted period, we expect active conditions return because of coronal hole 35/-4. This active episode can also be accompanied by minor storm effect. Beside this main events, other unsettled episode is possible about Sunday, October 14. Other days, we expect quiet to unsettled level.

Tomas Bayer
RWC Prague
Institute of Geophysics of the ASCR, Prague
Department of Geomagnetism
Budkov observatory (BDV) 

Geomagnetic activity forecast for the period October 12 - November 07, 2018

Geomagnetic field will be:
quiet on October 13, 16, 29 - 31, on November 1 
quiet to unsettled on October 14 - 15, 17, 27, 31 
quiet to active on October 12, 20, 22 - 26, on November 2, 7
unsettled to active on October 18, 21, 28, on November 5 - 6 
active to disturbed on October 19, on November 3 - 4 

Solar wind will intensify on October 12 - 13, (14,) 17  - 20, 
(27 - 28,) on November 2 - 5 
 
Remark:
- 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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