Solar activity forecast for the period October 27 - 28, 2017


Issued: 2017 October 26 17:15 UTC


Analysis from October 25/1700 UTC to October 26/1700 UTC:

Sunspot Regions on the Disk 26/1623 UTC (SDO Continuum): 2
The Largest Event: no  X-ray event
X-ray background flux (1.0-8.0 A) October 25: A7.7
Radio Flux 10.7 cm at 25/2300 UTC (Penticton): 78
Solar Wind Speed at 26/1645 UTC: 525.0 km/s, Density: 2.3 p/cm^3


Forecast:
 
activity level will be very low
Event probabilities: Class C: 15, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A6.0 - A9.5
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