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


Issued: 2017 June 3 17:15 UTC


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

Sunspot Regions on the Disk 03/1623 UTC (SDO Continuum): 1
The Largest Event: C8.0 from Region 2661 at 02/1757 UTC
		   C2.1 from Region 2661 at 03/0957 UTC
                   C2.5 from Region 2661 at 03/1456 UTC
X-ray background flux (1.0-8.0 A) June 2: B1.9
Radio Flux 10.7 cm at 02/2300 UTC (Penticton): 77
Solar Wind Speed at 03/1645 UTC: 397.6 km/s, Density: 4.1 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 A9.5 - B2.5
Radio Flux 10.7 cm: a fluctuation in the range 70 - 84

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