Solar activity forecast for the period August 26 - 27, 2017


Issued: 2017 August 25 17:15 UTC


Analysis from August 24/1700 UTC to August 25/1700 UTC:

Sunspot Regions on the Disk 25/1623 UTC (SDO Continuum): 2
The Largest Event: C5.5 from Region 2672 at 25/0727 UTC
X-ray background flux (1.0-8.0 A) August 24: invalid data
Radio Flux 10.7 cm at 24/2300 UTC (Penticton): 80
Solar Wind Speed at 25/1645 UTC: 342.5 km/s, Density: 4.0 p/cm^3


Forecast:
 
activity level will be low 
Event probabilities: Class C: 70, Class M: 15, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A9.0 - B4.5
Radio Flux 10.7 cm: a fluctuation in the range 72 - 88

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