Solar activity forecast for the period May 23 - 24, 2017


Issued: 2017 May 22 17:15 UTC


Analysis from May 21/1700 UTC to May 22/1700 UTC:

Sunspot Regions on the Disk 22/1623 UTC (SDO Continuum): 4
The Largest Event: no X-ray event
X-ray background flux (1.0-8.0 A) May 21: A5.6
Radio Flux 10.7 cm at 21/2300 UTC (Penticton): 73
Solar Wind Speed at 22/1645 UTC: 547.2 km/s, Density: 1.6 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 20, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A5.0 - A8.5
Radio Flux 10.7 cm: a fluctuation in the range 66 - 80

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