Solar activity forecast for the period August 24 - 25, 2017


Issued: 2017 August 23 17:15 UTC


Analysis from August 22/1700 UTC to August 23/1700 UTC:

Sunspot Regions on the Disk 23/1623 UTC (SDO Continuum): 3
The Largest Event: C1.9 from Region 2671 at 22/1750 UTC
                   C1.9 from Region 2671 at 22/1937 UTC
                   C1.6 from Region 2671 at 23/0647 UTC
                   C2.2 from Region 2672 at 23/1342 UTC
X-ray background flux (1.0-8.0 A) August 22: B1.7
Radio Flux 10.7 cm at 22/2300 UTC (Penticton): 86
Solar Wind Speed at 23/1645 UTC: 468.9 km/s, Density: 6.4 p/cm^3


Forecast:
 
activity level will be low to moderate
Event probabilities: Class C: 75, Class M: 15, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range B1.0 - B5.5
Radio Flux 10.7 cm: a fluctuation in the range 80 - 92

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