Solar activity forecast for the period October 1 - 2, 2017


Issued: 2017 September 30 17:15 UTC


Analysis from September 29/1700 UTC to September 30/1700 UTC:

Sunspot Regions on the Disk 30/1623 UTC (SDO Continuum): 3
The Largest Event: no X-ray event
X-ray background flux (1.0-8.0 A) September 29: invalid data
Radio Flux 10.7 cm at 29/2300 UTC (Penticton): 89
Solar Wind Speed at 30/1645 UTC: 464.4 km/s, Density: 2.6 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 25, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A8.5 - B4.5
Radio Flux 10.7 cm: a fluctuation in the range 82-98

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