Solar activity forecast for the period October 27 - November 2, 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 69-82 f.u.
Events: class C (0-3/period), class M (0/period), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 0-50

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 27 - November 2, 2017


Quiet: Oct 31 - Nov 02
Unsettled: Oct 27 - 31
Active:    possible Oct 28 - 29
Minor storm:  0
Major storm: 0
Severe storm: 0

Geomagnetic activity summary:
Curently, the local geomagnetic conditions are decreasing form active to
unsettled level. Next day, till October 29, we expect at most unsettled
conditions only with an isolated active episode. Quiet to unsettled
conditions are expected for Monday, October 30, and Thursday, November 2.
Between October 31 and November 2, we expect at most quiet conditons with
limited unsettled episodes.

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


Geomagnetic activity forecast for the period October 27 - November 22, 2017


Geomagnetic field will be:
quiet on November 4, 6, 12 - 13 
mostly quiet on October 29 - 31, November 1, 3, 5, 15 - 17, 19 
quiet to unsettled on October 28, November 2, 18, 20 
quiet to active on October 27, November 7, 11, 14, 22 
active to disturbed on November 8 - 10, (21) 

Amplifications of the solar wind from coronal holes are expected
on October (31), November (1 - 3,) 9 - 14, 20 - 21

Remark:
- Parenthesis means lower probability of activity enhancement.
- Current forecasts remains less reliable ...

F. K. Janda, OK1HH
Czech Propagation Interested Group
(OK1MGW gave up, so OK1HH alone again, compiling weekly forecasts since 1978)
e-mail: ok1hh(at)rsys.cz