Solar activity forecast for the period April 13 - 14, 2017


Issued: 2017 April 12 17:15 UTC


Analysis from April 11/1700 UTC to April 12/1700 UTC:

Sunspot Regions on the Disk 12/1623 UTC (SDO Continuum): 1
The Largest Event: B2.1 at 12/1432 UTC
X-ray background flux (1.0-8.0 A) April 11: A4.5
Radio Flux 10.7 cm at 11/2300 UTC (Penticton): 74
Solar Wind Speed at 12/1645 UTC: 420.6 km/s, Density: 1.7 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 10, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A4.0 - A9.5
Radio Flux 10.7 cm: a fluctuation in the range 69 - 79

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