Solar activity forecast for the period July 7 - July 13,
2017
Activity level: mostly very low to low
X-ray background flux
(1.0-8.0 A): in the range A5.0-B1.5
Radio flux (10.7 cm): a fluctuation in
the range 69-80 f.u.
Events: class C (0-4/period), class M (0-1/period),
class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the
range 11-65
Martina Exnerova
RWC Prague, Astronomical Institute, Solar
Dept., Ondrejov, Czech Republic
e-mail:
sunwatch(at)asu.cas.cz
Geomagnetic activity forecast for the period July
7 - July 13, 2017
Quiet: Jul 7, 11 - 12
Unsettled: Jul 8 - 9, 12 -
13
Active: Jul 10, 12 - 13
Minor storm: possible Jul 9 - 10,
13
Major storm: 0
Severe storm: 0
Geomagnetic activity
summary:
Next week, we expect two active episodes. The first one with
possible
minor stroming event is expectable between Jul 9/10. Then, we
expect
geomagnetic activity decrease to quiet to unsettled conditions and, at
the
end of the forecasted period, we expect new active episode (about Jun
13).
Tomas Bayer
RWC Prague
Institute of Geophysics of the ASCR,
Prague
Department of Geomagnetism
Budkov observatory
(BDV)
Geomagnetic activity forecast for the period July 7 - August 3,
2017
Geomagnetic field will be:
quiet on July 11, 18, 25 - 26,
August 1
mostly quiet on July 7, 17, 19 - 21, 24, 29 - 31
quiet to
unsettled July 9 - 10, 16, August 2 - 3
quiet to active on July 8, 12 - 13,
15, 22 - 23, 27
active to disturbed on July 14, 28
Amplifications of
the solar wind from coronal holes are expected
on July (8,) 9 - 12, 14 - 17,
(18, 21,) 22 - 24, (25,) 30 - 31
Remarks:
- 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
