Solar activity forecast for the period March 10 - March 16, 2017


Activity level: mostly very low
X-ray background flux (1.0-8.0 A): in the range A4.0-A9.5
Radio flux (10.7 cm): a fluctuation in the range 60-85 f.u.
Events: class C (0/day), class M (0/period), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 0-40

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


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


Quiet: Mar 10 - 15
Unsettled: Mar 10 - 11, 15 - 16
Active: possible Mar 16
Minor storm:  possible Mar 16
Major storm: 0
Severe storm: 0

Geomagnetic activity summary:

Hand-to hand with solar wind velocity decrease, the geomagnetic activity
is turning to quiet conditions although we observed some isolated active
episodes (at Budkov observatory, K=4 had been observed March 4, 5, 6 and
8), except of this, the activity was at most to quiet to unsettled level.
Next period, we expect at most quiet to unsettled conditions till March
16. This day, we expect active episode arrival which can reach minor storm
level. Till this, especially between March 11 and 14, we expect quiet
conditions.

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


Geomagnetic activity forecast for the period March 10 - April 5, 2017


Geomagnetic field will be:
quiet on March 14 - 15, 21, 26 
mostly quiet on March 10 - 13, 20 
quiet to unsettled March 16, 22, 25, April 4 
quiet to active on March 18 - 19, 24, 27 - 29, 31, April 1 - 3, 5
active to disturbed on March 17, 23, 30 

Amplifications of the solar wind from coronal holes are expected
on March (20 - 22,) 23 - 27, (April 3 - 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