Solar activity forecast for the period April 7 - April 13,
2017
Activity level: mostly very low to low
X-ray background flux
(1.0-8.0 A): in the range A5.5-B3.0
Radio flux (10.7 cm): a fluctuation in
the range 60-95 f.u.
Events: class C (0-4/day), class M (0-2/period), class X
(0/period), proton (0/period)
Relative sunspot number (Ri): in the range
0-75
Tomas Blaha
RWC Prague, Astronomical Institute, Solar Dept.,
Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
Geomagnetic
activity forecast for the period April 7 - April 13, 2017
Quiet: Apr
9 - 13
Unsettled: Apr 7 - 8, 12 - 13
Active: unlikely Apr 7
Minor
storm: 0
Major storm: 0
Severe storm: 0
Geomagnetic activity
summary:
Next week, we expect generally quiet to unsettled conditions. An
unlike
isolated active episode can occur during the coming three days but
we
expect also quiet to unsettled level. Between April 9 and 12, we
expect
the quietest course, the last days of forecasted period, an
unsettled
episode is possible.
Tomas Bayer
RWC Prague
Institute
of Geophysics of the ASCR, Prague
Department of Geomagnetism
Budkov
observatory (BDV)
Geomagnetic activity forecast for the period April 7 -
May 2, 2017
Geomagnetic field will be:
quiet on April 9 - 10, 14 -
16, 20, 30
mostly quiet on April 8, 11, 19, 21, 29, May 2
quiet to
unsettled April 12 - 13, May 1
quiet to active on April 7, 22, 24 - 28
active to disturbed on April 17 - 18, 23
Amplifications of the solar
wind from coronal holes are expected
on April (7 - 8,) 11 - 13. (15,) 16 -
19, 24 - 27
Remark:
- 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 1978
e-mail: ok1hh(at)rsys.cz
