Solar activity forecast for the period March 22 - 23, 2017


Issued: 2017 March 21 18:30 UTC


Analysis from March 20/1700 UTC to March 21/1815 UTC:

Sunspot Regions on the Disk 21/1741 UTC (SDO Continuum): 1
The Largest Event: no X-ray event
X-ray background flux (1.0-8.0 A) March 20: A1.9 (invalid data?)
Radio Flux 10.7 cm at 20/2300 UTC (Penticton): 72
Solar Wind Speed at 21/1800 UTC: 578.7 km/s, Density: 7.1 p/cm^3


Forecast:
 
activity level will be very low
Event probabilities: Class C: 05, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A3.0 - A8.0
Radio Flux 10.7 cm: a fluctuation in the range 68 - 76

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