Issued: 2024 September 11 17:00 UTC


Analysis from September 10/1700 UTC to September 11/1700 UTC:

Sunspot Regions on the Disk 11/1529 UTC (SDO Continuum): 13
The Largest Event: M1.9 from region S14E87 at 11/1530 UT
X-ray background flux (1.0-8.0 A) September 10: C3.1
Radio Flux 10.7 cm at 10/2300 UTC (Penticton): 205
Solar Wind Speed at 11/1645 UTC: 362.9 km/s, density : 3.8 p/cm^3


Forecast:

Activity level will be: moderate - explanation
Event probabilities: Class C: 99%, Class M: 60%, Class X: 25%, Proton: 40%
X-ray background flux (1.0-8.0 A): in the range C2.5-C4.5
Radio Flux 10.7 cm: a fluctuation in the range 190-210

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