Týdenní předpověď

Datum vydání předpovědi:

Solar activity forecast for the period May 07 - May 13, 2021

Activity level: mostly very low
X-ray background flux (1.0-8.0 A): in the range A4.0 - A8.5
Radio flux (10.7 cm): a fluctuation in the range 69-76 f.u.
Events: class C (0-3/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 May 07 - May 13, 2021

Quiet:  May 7 - 11
Unsettled: May 9 - 10, 12
Active:  possible May 12 - 13
Minor storm: May 13 - 14
Major storm: 0
Severe storm: 0

Geomagnetic activity summary:
The most active region is expected at the end of the currently 
forecasted period, about Thursady, May 13, and Friday, May 14. Till this 
event, we expect quiet to unsettled conditions generally. An isolated 
unsettled episode is possible between  SUnday, May 9, and Monday, May 
10, and also about Wednesday, May 12, before the active conditions 
arrival. Till this event, and except the possible unsettled isolated 
events meant above, we expect at most quiet conditions till the main 
active event.

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

Geomagnetic activity forecast for the period May 07 - June 01, 2021

Geomagnetic field will be
quiet on: May 7 - 8, 18 - 19, 25 - 26
quiet to unsettled on: May 9 - 11, 17, 24, 31, June 1
quiet to active on: May 12, (20 - 23, 27)
unsettled to active: May 16, 28 - 30
active to disturbed: May 13 - 14, (15)

Solar wind will intensify on: May (10 - 11, 16,)
17 - 18, (21 - 25,) 28 - 30

Remarks:
- Parenthesis means lower probability of activity enhancement.
- Contradictory indications significantly reduce the accuracy of the
forecast.

F. K. Janda, OK1HH
(from Czech Propagation Interested Group
compiling this geomagnetic activity weekly forecasts since January 1978).
Emails: ok1hh(at)crk.cz, janda(at)planetum.cz
Pmail: OK1HH(at)OK0NAG.#BOH.CZE.EU

Odběr týdenních předpovědí

Pro odběr týdenních předpovědí přes email se prosím přihlaste na: sunwatch "at-sign" asu.cas.cz