Solar activity forecast for the period June 1 - 2, 2017


Issued: 2017 May 31 17:15 UTC


Analysis from May 30/1700 UTC to May 31/1700 UTC:

Sunspot Regions on the Disk 31/1623 UTC (SDO Continuum): 1
The Largest Event: C1.3 at 31/2106 UTC
X-ray background flux (1.0-8.0 A) May 30: A8.7
Radio Flux 10.7 cm at 30/2300 UTC (Penticton): 74
Solar Wind Speed at 31/1650 UTC: 353.9 km/s, Density: 3.7 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 40, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A8.5 - B2.0
Radio Flux 10.7 cm: a fluctuation in the range 67 - 81

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