Solar activity forecast for the period February 24 - March 2, 2017


Activity level: mostly very low to low
X-ray background flux (1.0-8.0 A): in the range A6.5-B3.0
Radio flux (10.7 cm): a fluctuation in the range 65-95 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 11-75

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


Geomagnetic activity forecast for the period February 24 - March 2, 2017


Quiet: episodically Feb 25 - 26
Unsettled: Feb 25 - Mar 2
Active: Feb 24 - 25, 28, Mar 1
Minor storm:  possible Feb 24, 28
Major storm: 0
Severe storm: 0

Geomagnetic activity summary:
We expect unsettled conditions during the next week. Tomorrow, e.g.
Friday, February 24, we expect an active episode, unlikely minor storm
event. The other active episode is probable at February 28 - March 1. The
activity is probable at active/minor storm again.
The other days, we expect at most unsettled conditions. Durind the coming
weekend, the activity can briefly decrease to quiet level, then, we expect
at most unsettled course till the active episode mentioned above.

Tomas Bayer
RWC Prague
Institute of Geophysics of the ASCR, Prague
Department of Geomagnetism
Budkov observatory (BDV)


Geomagnetic activity forecast for the period February 24 - March 22, 2017


Geomagnetic field will be:
quiet on March 7 - 8, 11 - 12, 15 
mostly quiet on February 25 - 26, March 6, 14 
quiet to unsettled February 24, March 9 - 10, 13, (21 - 22) 
quiet to active on February 27, March 3 - 5, 16, 19 - 20 
active to disturbed on February 28, March 1 - 2, 17 - 18 

Amplifications of the solar wind from coronal holes are expected
on February 27 - 28, March 3 - 5, (6 - 8)

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