Solar activity forecast for the period October 6 - October 12,
2017
Activity level: mostly very low to low
X-ray background flux
(1.0-8.0 A): in the range A5.0-B2.5
Radio flux (10.7 cm): a fluctuation in
the range 70-90 f.u.
Events: class C (0-5/period), class M (0/period), class
X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range
0-60
Tomas Baha
RWC Prague, Astronomical Institute, Solar Dept.,
Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
Geomagnetic
activity forecast for the period October 6 - October 12, 2017
Quiet:
Oct 6 - 7
Unsettled: Oct 7 - 9, 12
Active: Oct 8 - 9, 11
Minor
storm: possible Oct 10 - 11
Major storm: 0
Severe storm:
0
Geomagnetic activity summary:
The first active episode is expected
between October 8-9. Till this event,
we expect quiet to unsettled
conditions. October 9-10, we expect
geomagnetic activity decrease to
unsettled level, and, October 10 - 11,
active conditions return. This event
can be accompanied by minor storm
event.
Tomas Bayer
RWC
Prague
Institute of Geophysics of the ASCR, Prague
Department of
Geomagnetism
Budkov observatory (BDV)
Geomagnetic activity forecast
for the period October 6 - November 1, 2017
Geomagnetic field will
be:
quiet on October 7, 22 - 23, 30
mostly quiet on October 6, 17 - 19,
21, 29
quiet to unsettled October 10, 15 - 16, 28, 31, November 1
quiet to
active on October 8, 11, 13 - 14, 20, 24, 27
active to disturbed on October
9, 12, 25 - 26
Amplifications of the solar wind, mostly from coronal
holes, are expected
on October (6,) 11 - 16, (17 - 18, 21 - 22, 24,)
25
Remark:
- Amplifications of the solar wind - prediction is less
reliable at present.
- Parenthesis means lower probability of activity
enhancement
and/or lower reliability of prediction.
F. K. Janda,
OK1HH
Czech Propagation Interested Group
OK1HH compiling weekly forecasts
since January 1978
e-mail: ok1hh(at)rsys.cz
