Solar activity forecast for the period April 6 - 7, 2017


Issued: 2017 April 5 17:15 UTC


Analysis from April 04/1700 UTC to April 05/1700 UTC:

Sunspot Regions on the Disk 05/1623 UTC (SDO Continuum): 3
The Largest Event: C4.9 from Region 2645 at 04/2342 UTC
                   C1.1 from Region 2645 at 05/0455 UTC
X-ray background flux (1.0-8.0 A) April 4: B5.5
Radio Flux 10.7 cm at 04/2300 UTC (Penticton): 94
Solar Wind Speed at 05/1645 UTC: 395.9 km/s, Density: 18.6 p/cm^3


Forecast:
 
activity level will be low to moderate
Event probabilities: Class C: 70, Class M: 20, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range B1.0 - B6.0
Radio Flux 10.7 cm: a fluctuation in the range 84 - 104

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