Solar activity forecast for the period August 11 - August 17,
2017
Activity level: mostly very low
X-ray background flux
(1.0-8.0 A): in the range A3.0-A8.5
Radio flux (10.7 cm): a fluctuation in
the range 66-78 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
0-45
Martina Exnerova
RWC Prague, Astronomical Institute, Solar Dept.,
Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
Geomagnetic
activity forecast for the period August 11 - August 17, 2017
Quiet:
Aug 11 - 12, 16 - 17
Unsettled: Aug 12 - 14, 17
Active: Aug 12 -
13
Minor storm: unlikely Aug 13
Major storm: 0
Severe storm:
0
Geomagnetic activity summary:
Currently, local geomagnetic field is
quiet.
We expect quiet to unsettled conditions till Saturday, August 12.
Evenings
of this day, the active event can start. Sunday, August 13, we
expect at
most unsettled conditions with possible active event. Monday,
August 14,
we expect at most unsettled conditions and geomagnetic activity
decrease
to quiet to unsettled conditions. This level is expected to the end
of
current forecasted period.
Tomas Bayer
RWC Prague
Institute
of Geophysics of the ASCR, Prague
Department of Geomagnetism
Budkov
observatory (BDV)
Geomagnetic activity forecast for the period August 11
- September 6, 2017
Geomagnetic field will be:
quiet on August 15
- 16, 25 - 27, 29
mostly quiet on August 11, 28, 30, September 5 - 6
quiet to unsettled August 21, 24, September 3 - 4
quiet to active on
August 12, 14, 17 - 23, 31
active to disturbed on August 13, September 1 - 2
Amplifications of the solar wind from coronal holes are expected
on
August 14 - 23, 28, 30 - 31.
Remarks:
- Parenthesis means lower
probability of activity enhancement
and/or lower reliability of prediction.
- A next our Geomagnetic activity forecast will be issued on
August 31,
because of the author's participation on the expedition.
Contrary to the
ancient times when our publishing began, there
are other relatively reliable
and usable resources today.
F. K. Janda, OK1HH
Czech Propagation
Interested Group
OK1HH compiling weekly forecasts since January 1978
e-mail: ok1hh(at)rsys.cz
