Solar activity forecast for the period August 18 - 19, 2017


Issued: 2017 August 17 18:00 UTC


Analysis from August 16/1700 UTC to August 17/1745 UTC:

Sunspot Regions on the Disk 17/1711 UTC (SDO Continuum): 1
The Largest Event: B6.8 at 17/0236 UTC
X-ray background flux (1.0-8.0 A) August 16: B1.3
Radio Flux 10.7 cm at 16/2300 UTC (Penticton): 79
Solar Wind Speed at 17/1730 UTC: 503.3 km/s, Density: 4.6 p/cm^3


Forecast:
 
activity level will be low
Event probabilities: Class C: 50, Class M: 10, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A9.0 - B3.0
Radio Flux 10.7 cm: a fluctuation in the range 73 - 85

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