Solar activity forecast for the period September 1 - September 7,
2017
Activity level: mostly low
X-ray background flux (1.0-8.0 A):
in the range A9.5-B5.5
Radio flux (10.7 cm): a fluctuation in the range 80-98
f.u.
Events: class C (0-7/day), class M (0-6/period), class X (0/period),
proton (0/period)
Relative sunspot number (Ri): in the range
15-90
Martina Exnerova
RWC Prague, Astronomical Institute, Solar
Dept., Ondrejov, Czech Republic
e-mail:
sunwatch(at)asu.cas.cz
Geomagnetic activity forecast for the period
September 1 - September 7, 2017
Quiet: Sep 5 - 7
Unsettled: Sep 2
- 5
Active: Sep 1 - 2, 4 - 5
Minor storm: Sep 1
Major storm:
0
Severe storm: 0
Geomagnetic activity summary:
Beecause of large
coronal hole reaching the equatorial solar latitudes, we
expect the active
conditions in the two coming days. Tomorrow (Septermber
1) we expect possible
storming effect but the local K-index should not
exceed value 5.
We expect
unsettled to active conditions between September 2 and
September 4. At the
end of this unsettled event, active episode is
possible about September 4
because of coronal hole CIR.
Since September 5, we expect geomagnetic
activity decrease to quiet to
unsettled conditions.
Tomas Bayer
RWC
Prague
Institute of Geophysics of the ASCR, Prague
Department of
Geomagnetism
Budkov observatory (BDV)
Geomagnetic activity forecast
for the period September 1 - September 27, 2017
Geomagnetic field
will be:
quiet on September 10 - 11, 20 - 21
mostly quiet on September 4
- 6, 23, 26
quiet to unsettled September 3, 8 - 9, 19, 22, 27
quiet to
active on September 2, 7, 12, 16 - 17, 24
active to disturbed on September
1, 13 - 15, 18, 25
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 January 1978
e-mail: ok1hh(at)rsys.cz
