Issued: 2026 June 27 17:00 UTC


Analysis from June 26/1700 UTC to June 27/1700 UTC:

Sunspot Regions on the Disk 27/1315 UTC (SDO Continuum): 6
The Largest Event: C3.9 from region 4475 at 27/0923 UT
X-ray background flux (1.0-8.0 A) June 27: B9.3
Radio Flux 10.7 cm at 26/2300 UTC (Penticton): 164
Solar Wind Speed at 27/1645 UTC: 556.9 km/s, density : 0.0 p/cm^3


Forecast:

Activity level will be: low to moderate - explanation
Event probabilities: Class C: 99%, Class M: 45%, Class X: 20%, Proton: 10%
X-ray background flux (1.0-8.0 A): in the range C1.0-C2.0
Radio Flux 10.7 cm: a fluctuation in the range 152-176

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