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Solar activity forecast for the period December 07 - December 13, 2018

Activity level: mostly very low
X-ray background flux (1.0-8.0 A): in the range A1.0-A3.0
Radio flux (10.7 cm): a fluctuation in the range 67-72 f.u.
Events: class C (0/period), class M (0/period), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 0-45

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

Geomagnetic activity forecast for the period December 07 - December 13, 2018

Quiet: Dec 11 - 13
Unsettled: Dec 7 - 10
Active: Dec 7, 9 - 10
Minor storm: 0
Major storm: 0
Severe storm: 0

Geomagnetic activity summary:
Because of the last large equatorial coronal hole, we expect at most unsettled conditions at the two coming days. Although the activity can be at quiet to unsettled level, at Friday, December 7, an isolated active event is possible. The other active episode is possible between December 9 and December 10.
After these unsettled episodes, we expect at most quiet conditions return since December 11.

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

Geomagnetic activity forecast for the period December 07 - January 02, 2019

Geomagnetic field will be: 
quiet on November 30, December 10, 12 - 15, 19 - 21, 23 
quiet to unsettled on December 18, 22, 25 - 27, January 1 
quiet to active on December 9, 11, 16, 24, January 2 
unsettled to active on December 7 - 8, 17, 30 - 31 
active to disturbed on December (28 - 29) 
 
Solar wind will intensify on November 30 and on December 7 - 9, 
(10 - 12, 15 - 18, 24 - 27,) 28 - 31, January 1, (2)
 
Remark: 
- Parenthesis means lower probability of activity enhancement. 
 
F. K. Janda, OK1HH 
(from Czech Propagation Interested Group 
compiling this geomagnetic activity weekly forecasts since 1978). 
e-mail: ok1hh(at)rsys.cz 

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