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


Issued: 2017 July 31 17:15 UTC


Analysis from July 30/1700 UTC to July 31/1700 UTC:

Sunspot Regions on the Disk 31/1623 UTC (SDO Continuum): 0
The Largest Event: B9.2 at 31/0912 UTC
X-ray background flux (1.0-8.0 A) July 30: A4.6
Radio Flux 10.7 cm at 30/2300 UTC (Penticton): 70
Solar Wind Speed at 31/1645 UTC: 322.9 km/s, Density: 0.8 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 60, Class M: 20, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A4.5 - B1.0
Radio Flux 10.7 cm: a fluctuation in the range 69 - 79

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