Weekly forecast

Data type:
Legacy format
Forecast issued date:

Solar activity forecast for the period January 18 - January 24, 2019

Activity level: mostly very low
X-ray background flux (1.0-8.0 A): in the range A0.0-A2.0
Radio flux (10.7 cm): a fluctuation in the range 68-71 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 0-25

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

Geomagnetic activity forecast for the period January 18 - January 24, 2019

Quiet: Jan 18 - 23
Unsettled: Jan 19 - 21
Active: Jan 24 - 25
Minor storm: possible Jan 24
Major storm: 0
Severe storm: 0

Geomagnetic activity summary:
We expect an active episode at the end of forecasted period, i.e. January 24 - 25. This episode can peak as minor storm event although it need not exceed local K-index = 4. Nevertheless, the minor storm event is possible.
Till this event, we expect at most quiet to unsettled conditions, i.e. since Friday, January 18 till Wednesday, January 23, we expect at most quiet conditions only with an isolated unsettled event.

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

Geomagnetic activity forecast for the period January 04 - January 30, 2019

Geomagnetic field will be:
quiet on January 10 - 12, 22 - 23, 29 - 30
quiet to unsettled on January 13, 20, 27 - 28
quiet to active on January 9, 14, 18 - 19
unsettled to active on January 4 - 8, 15, 17, 21, 25 - 26
active to disturbed on January 16 - 17, 24

Solar wind will intensify on on January 3 - 7,
(8, 13 - 14,) 15 - 19, (20 - 24,) 25 - 29

Remark:
- Parenthesis means lower probability of activity enhancement.

Announcement:
- This forecast was compiled on January 3.
  The next one will be compiled on January 31.

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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