Solar activity forecast for the period September 25 - 26, 2017


Issued: 2017 September 24 17:15 UTC


Analysis from September 23/1700 UTC to September 24/1700 UTC:

Sunspot Regions on the Disk 24/1629 UTC (SDO Continuum): 2
The Largest Event: B2.8 from Region 2682 at 24/1122
X-ray background flux (1.0-8.0 A) September 23: A7.6
Radio Flux 10.7 cm at 23/2300 UTC (Penticton): 83
Solar Wind Speed at 24/1645 UTC: 333.0 km/s, Density: 15.3 p/cm^3


Forecast:
 
activity level will be low
Event probabilities: Class C: 55, Class M: 15, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A9.5 - B4.5
Radio Flux 10.7 cm: a fluctuation in the range 78-88

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