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


Issued: 2017 February 22 17:30 UTC


Analysis from February 21/1700 UTC to February 22/1715 UTC:

Sunspot Regions on the Disk 22/1641 UTC (SDO Continuum): 2
The Largest Event: C4.1 at 22/1327 UTC
X-ray background flux (1.0-8.0 A) February 21: B1.3
Radio Flux 10.7 cm at 21/2300 UTC (Penticton): 82
Solar Wind Speed at 22/1700 UTC: 391.7 km/s, Density: 4.7 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 25, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A8.5 - B2.0
Radio Flux 10.7 cm: a fluctuation in the range 78 - 86

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