Solar activity forecast for the period September 25 - October 1, 2015

Activity level: mostly low
X-ray background flux (1.0-8.0 A): in the range B1.0-B7.5
Radio flux (10.7 cm): a fluctuation in the range 85-125 f.u.
Events: class C (0-15/day), class M (0-8/period), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 15-85

Jozef Lesko
RWC Prague, Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
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Geomagnetic activity forecast for the period September 24 - October 1, 2015

Next two days, we expect quiet to unsettled conditions.
Since Sep 26, we expect unsettled to active conditions, unsettled conditions are probable also at the Sunday, Sep 28.
The last part of forecasted week, we expect at most quiet to unsettled conditions.

Tomas Bayer
Institute of Geophysics ASCR
Budkov Geomagnetic Observatory (BDV)
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Geomagnetic activity forecast for the period September 25 - October 21, 2015

Geomagnetic field will be:
quiet on September 26 - 28
mostly quiet on September 29, October 18 - 20
quiet to unsettled on September 25, 30, October 4 - 6, 9 - 10, 15, 21
quiet to active on October 1 - 3, 11 - 14, 16 - 17
active to disturbed on October 7 - 8,

Amplifications of the solar wind are expected on October 1 - 3, 7 - 10, 16 - 17


Remarks:
- Reliability of predictions remains reduced in present solar cycle phase.
- Parenthesis means lower probability of activity enhancement.

Petr Kolman, OK1MGW
Czech Propagation Interested Group
(OK1HH & OK1MGW, weekly forecasts since 1978)
e-mail: kolmanp(at)razdva.cz