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


Issued: 2017 August 3 17:15 UTC


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

Sunspot Regions on the Disk 03/1623 UTC (SDO Continuum): 1
The Largest Event: B9.4 from Region 2670 at 02/2359 UTC
X-ray background flux (1.0-8.0 A) August 2: A6.5
Radio Flux 10.7 cm at 02/2300 UTC (Penticton): 76
Solar Wind Speed at 03/1650 UTC: 416.7 km/s, Density: 7.2 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 A4.5 - B1.5
Radio Flux 10.7 cm: a fluctuation in the range 70 - 81

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