Weekly forecast

Solar activity forecast for the period April 25 - May 01, 2025

Activity level: low to moderate
X-ray background flux (1.0-8.0 A): in the range B8.0-C5.0
Radio flux (10.7 cm): a fluctuation in the range 112-185
Events: class C (2-13/day), class M (1-6/period), class X (0-0/period), proton (0-1/period)
Relative sunspot number (Ri): in the range 50-180

Vlastislav Feik
RWC Prague, Astronomical Institute, Solar Dept., Ondrejov, Czech Republic

Geomagnetic activity forecast for the period April 25 - May 01, 2025

Quiet: Apr 28 - 29
Unsettled: Apr 24 - 27
Active: Apr 24, 30
Minor storm: Apr 30 - May 1
Major storm: possible 0
Severe storm: 0

Currently, geomagnetic field is at unsettled level.

Next days, we expect unsttled conditions continue.

Since Monday, we expect further geomagnetic activity decrease to quiet and/or quiet to unsettled level, respectively.

At the end of currently forecasted period, geomagnetic activity enhancement is possible, likely with further minor storming event.

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

Receive Weekly Forecasts Bulletin

To receive Weekly Forecasts Bulletin via email, sign up for: sunwatch "at-sign" asu.cas.cz