Solar activity forecast for the period August 28 - September 3,
2015
Activity level: mostly low
X-ray background flux (1.0-8.0 A): in
the range B1.5-B7.5
Radio flux (10.7 cm): a fluctuation in the range 90-125
f.u.
Events: class C (0-12/day), class M (0-4/day), class X (0-1/period),
proton (0-1/period)
Relative sunspot number (Ri): in the range
10-85
Jozef Lesko
RWC Prague, Astronomical Institute, Solar Dept.,
Ondrejov, Czech Republic
e-mail:
sunwatch(at)asu.cas.cz
_________________________________________________________________________
Geomagnetic
activity forecast for the period August 28 - September 3, 2015
Currently,
an active episode seems to be going to end. Nevertheless, two
following days,
we expect at most unsettled conditions with isolated
active event
possible.
During the weekend, quiet to unsettled conditions are
probable.
At Aug 31 and Sep 1, we expect at most unsettled conditions.
The
last days of forecasted week (Sep 2-3) unsettled to active conditions
are
possible because of equatorial coronal hole positive charged.
Tomas
Bayer
Institute of Geophysics ASCR
Budkov Geomagnetic Observatory
(BDV)
_________________________________________________________________________
Geomagnetic
activity forecast for the period August 28 - September 23,
2015
Geomagnetic field will be:
quiet on August 30
mostly quiet on
August 31, September 1, 6 - 7, 17, 20 - 21
quiet to unsettled on August 29,
September 4 - 5, 8 - 10, 14, 18
quiet to active on August 28, September 2,
11, 13, 15 - 16, 22
active to disturbed on September 3, 12, 19,
23
Amplifications of the solar wind are expected on August 28 -
29,
September 1 - 5, 10 - 11, (16 - 17,) 18 - 20, 23
Remarks:
-
Reliability of predictions remains reduced in present solar cycle phase.
-
Parenthesis means lower probability of activity enhancement.
F. K. Janda,
OK1HH
Czech Propagation Interested Group
(OK1HH & OK1MGW, weekly
forecasts since 1978)
e-mail: ok1hh(at)rsys.cz
