Bulletin: Current Conditions

23 May 2025

Solar activity is very low with the background X-ray flux at lower B-class levels with no significant flaring. There are nine sunspot regions on the visible solar disk with simple to slightly complex magnetic configurations. The solar wind speed is at elevated levels with speed ranging between 470-560 km/s due to the waning high-speed stream (HSS) from coronal hole 48 (CH48/+). A few filaments and prominences lifted off, but none of them have Earth-directed CMEs. Geomagnetic conditions are at quiet levels (Kp 1-2). Local HF working frequencies are near monthly predicted values.

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Current Conditions

2025-05-24 02:46
Solar wind speed:	421.6 km/s
IMF Bz:	-0.7 nT
Hermanus T-index:	147
Hermanus hmF2:	286.885 km
Hermanus foF2:	3.250 MHz
Dcx Index:	-3.5 nT

Space Weather Bulletin

23 May 2025
Solar activity is very low with the background X-ray flux at lower B-class levels with no significant flaring. There are nine sunspot regions on the visible solar disk with simple to slightly complex magnetic configurations. The solar wind speed is at elevated levels with speed ranging between 470-560 km/s due to the waning high-speed stream (HSS) from coronal hole 48 (CH48/+). A few filaments and prominences lifted off, but none of them have Earth-directed CMEs. Geomagnetic conditions are at quiet levels (Kp 1-2). Local HF working frequencies are near monthly predicted values.