Solar activity forecast for the period April 5 - 6, 2017


Issued: 2017 April 4 17:15 UTC


Analysis from April 03/1700 UTC to April 04/1700 UTC:

Sunspot Regions on the Disk 04/1623 UTC (SDO Continuum): 5
The Largest Event: C5.0 from Region 2644 at 03/2013 UTC
                   C3.7 from Region 2644 at 04/0712 UTC
X-ray background flux (1.0-8.0 A) April 3: C1.2
Radio Flux 10.7 cm at 03/2300 UTC (Penticton): 106
Solar Wind Speed at 04/1645 UTC: 461.4 km/s, Density: 5.0 p/cm^3


Forecast:
 
activity level will be low to moderate
Event probabilities: Class C: 85, Class M: 15, 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 96 - 116

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