Solar activity forecast for the period July 28 - August 3,
2017
Activity level: mostly very low
X-ray background flux
(1.0-8.0 A): in the range A4.0-B1.0
Radio flux (10.7 cm): a fluctuation in
the range 67-80 f.u.
Events: class C (0-3/period), class M (0/period), class
X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range
0-50
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 27 - August 3, 2017
Quiet: Jul
27 - 28, Aug 1 - 2
Unsettled: Jul 29 - 3, Aug 3
Active: possible Jul 29
- 30
Minor storm: 0
Major storm: 0
Severe storm: 0
Geomagnetic
activity summary:
Next week, we do not expect anz storming event. Within the
quiet to
unsettled course, a single active episode is possible July 29 - 30,
possible but unlikely also August 3. During the coming weekend, we
expect
more unsettled conditions, till Saturday, July 29, and since August 1,
at
most quiet conditions are probable.
Tomas Bayer
RWC
Prague
Institute of Geophysics of the ASCR, Prague
Department of
Geomagnetism
Budkov observatory (BDV)
Geomagnetic activity
forecast for the period July 28 - August 22, 2017
Geomagnetic field
will be:
quiet on August 4, 9
mostly quiet on July 30, August 2, 8, 10,
14 - 15
quiet to unsettled July 28 - 29, August 1, 3, 16
quiet to active
on July 31, August 5, 7, 11, 13, 17 - 22
active to disturbed on August 6, 12
Amplifications of the solar wind from coronal holes are expected
on
July 13 - 16 (-17), 20 - 21, (23 - 24, 28 - 29,) August 6 - 8
Remark:
- Parenthesis means lower probability of activity enhancement
and/or lower reliability of prediction due irregular changes
in position
and area of coronal holes.
F. K. Janda, OK1HH
Czech Propagation
Interested Group
OK1HH compiling weekly forecasts since January 1978
e-mail: ok1hh(at)rsys.cz
