Issued: 2026 August 04 17:00 UTC


Analysis from August 03/1700 UTC to August 04/1700 UTC:

Sunspot Regions on the Disk 04/1415 UTC (SDO Continuum): 7
The Largest Event: C1.2 from region S18E79 at 04/1158 UT
X-ray background flux (1.0-8.0 A) August 03: B8.4
Radio Flux 10.7 cm at 03/2300 UTC (Penticton): 125
Solar Wind Speed at 04/1645 UTC: 450.2 km/s, density : 2.1 p/cm^3


Forecast:

Activity level will be: very low to low - explanation
Event probabilities: Class C: 75%, Class M: 25%, Class X: 05%, Proton: 01%
X-ray background flux (1.0-8.0 A): in the range B8.5-C1.5
Radio Flux 10.7 cm: a fluctuation in the range 113-137

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