Solar activity forecast for the period October 23 - 24, 2017


Issued: 2017 October 22 17:15 UTC


Analysis from October 21/1700 UTC to October 22/1700 UTC:

Sunspot Regions on the Disk 22/1623 UTC (SDO Continuum): 2
The Largest Event: B3.3 at 21/2106 UTC
X-ray background flux (1.0-8.0 A) October 21: A7.8
Radio Flux 10.7 cm at 21/2300 UTC (Penticton): 78
Solar Wind Speed at 22/1645 UTC: 394.2 km/s, Density: 4.9 p/cm^3


Forecast:
 
activity level will be low to moderate
Event probabilities: Class C: 50, Class M: 15, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A5.0 - A9.0
Radio Flux 10.7 cm: a fluctuation in the range 72-84

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