Weekly forecast

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Forecast issued date:

Solar activity forecast for the period August 07 - August 13, 2020

Activity level: mostly very low
X-ray background flux (1.0-8.0 A): in the range A3.0-A5.5
Radio flux (10.7 cm): a fluctuation in the range 71-74 f.u.
Events: class C (0-1/period), class M (0/period), class X (0/period),
proton (0/period)
Relative sunspot number (Ri): in the range 0-45

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

Geomagnetic activity forecast for the period August 07 - August 13, 2020

Quiet: Aug 7, 10 - 13
Unsettled: Aug 8 - 10
Active: unlikely Aug 8 - 9
Minor storm: 0
Major storm: 0
Severe storm: 0

Geomagnetic activity summary:
The last active episode (at Budkov observatory, we have recorded one 
K=4) is currently turning to quiet level.
Next week, we expect at most quiet to unsettled conditions. The most 
unsettled condtitions is expected during the coming weekend, i.e. 
between Staurday, August 8, and Monday, August 10. Nevetheless, within 
the unsettled episode, local K-index should not exceed level 3.  Since 
Tuesday, August 11, we expect quiet conditions return.

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

Geomagnetic activity forecast for the period August 07 - September 02, 2020

Geomagnetic field will be
quiet on: August 7 (-8,) 12, 15 - 16, September 2
quiet to unsettled on: August 9, 11, 13 - 14, 17 - 19, 22, (23 - 27,)
 28 - 29, September 1
quiet to active on: (August 10, 20 - 21)
unsettled to active on: August (30 - 31)
active to disturbed: not expected

Solar wind will intensify on: August (10 - 11, 22 23,) 24 - 25, September 1
- 2

Remarks:
- Parenthesis means lower probability of activity enhancement.
- The predictability of changes remains lower because there are few
  indications, moreover, in new active areas.

F. K. Janda, OK1HH
(from Czech Propagation Interested Group
compiling this geomagnetic activity weekly forecasts since January 1978).
Email: ok1hh(at)rsys.cz

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