Solar activity forecast for the period November 3 - November 9, 2017


Activity level: mostly very low
X-ray background flux (1.0-8.0 A): in the range A4.0-A9.5
Radio flux (10.7 cm): a fluctuation in the range 69-80 f.u.
Events: class C (0-2/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 November 3 - November 9, 2017


Quiet: Nov 3 - 5
Unsettled: Nov 5 - 8
Active:    Nov 7 - 9
Minor storm:  Nov 8 - 9
Major storm: 0
Severe storm: 0

Geomagnetic activity summary:
Currently, the geomagnetic field is quiet.
We expect an active episode at the end of forecasted period, between 
November, 7 and 9. Till this event, because of solar wind velocity decrase
during the last days, we expect quiet to unsettled conditions. Today,
solart wind velocity started increase which should be effective since
Tuessday, November 7.

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



Geomagnetic activity forecast for the period November 3 - November 29, 2017


Geomagnetic field will be:
quiet on November 4, 6, 12 - 13, 23 - 27
mostly quiet on November 3, 5, 16 - 19 
quiet to unsettled on November 15, 20 
quiet to active on November 7, 11, 14, 22 
active to disturbed on November 8 - 10, (21) 

Amplifications of the solar wind from coronal holes are expected
November (3,) 9 - 14, 20 - 21

Remarks:
- Parenthesis means lower probability of activity enhancement.
- Current forecasts remains 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