Solar activity forecast for the period April 24 - 25, 2017


Issued: 2017 April 23 17:15 UTC


Analysis from April 22/1700 UTC to April 23/1700 UTC:

Sunspot Regions on the Disk 23/1623 UTC (SDO Continuum): 3
The Largest Event: B3.7 at 23/0306 UTC
X-ray background flux (1.0-8.0 A) April 22: B1.0
Radio Flux 10.7 cm at 22/2300 UTC (Penticton): 83
Solar Wind Speed at 23/1645 UTC: 736.8 km/s, Density: 1.8 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 35, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A7.0 - B2.0
Radio Flux 10.7 cm: a fluctuation in the range 76 - 90

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