Solar activity forecast for the period October 4 - 5, 2017


Issued: 2017 October 3 17:15 UTC


Analysis from October 02/1700 UTC to October 03/1700 UTC:

Sunspot Regions on the Disk 03/1623 UTC (SDO Continuum): 2
The Largest Event: B2.2 at 03/0119 UTC
X-ray background flux (1.0-8.0 A) October 2: A6.9 (inaccurate data)
Radio Flux 10.7 cm at 02/2300 UTC (Penticton): 87
Solar Wind Speed at 03/1645 UTC: 401.0 km/s, Density: 4.2 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 20, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A8.5 - B2.0
Radio Flux 10.7 cm: a fluctuation in the range 80-90

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