Solar activity forecast for the period February 10 - February 16, 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 60-85 f.u.
Events: class C (0-3/day), class M (0/period), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 0-65

Tomas Blaha
RWC Prague, Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz


Geomagnetic activity forecast for the period February 10 - February 16, 2017


Quiet: Feb 10 - 13
Unsettled: Feb 13 - 16
Active: Feb 14 - 15
Minor storm:  0
Major storm: 0
Severe storm: 0

Geomagnetic activity summary:
Solar wind velocity has decreasing trend.
Next week, generally, should be at quiet to unsettled level. We expect an
active episode about February 15, then, we expect return 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 February 10 - March 9, 2017


Geomagnetic field will be:
quiet on February 10 - 11, 13 - 14, 21, 23 - 24, 26, March 8 - 9
mostly quiet on February 12, 15, 19, March 7
quiet to unsettled - sometimes, hardly to be forecasted
quiet to active on February 17, 20, 22, 25, 27, March 3 - 6
active to disturbed on February 16, 18, 28, March 1 - 2

Amplifications of the solar wind from coronal holes are expected
on February 16 - 21, (22,) 26 - 27 ... see next time

Remark:
- Parenthesis means lower probability of activity enhancement.

F. K. Janda, OK1HH
Czech Propagation Interested Group
OK1HH compiling weekly forecasts since 1978
e-mail: ok1hh(at)rsys.cz