Solar activity forecast for the period April 21 - April 22, 2019

Issued: 2019 April 20 17:00 UTC


Analysis from April 19/1700 UTC to April 20/1700 UTC:

Sunspot Regions on the Disk 20/1553 UTC (SDO Continuum): 1
The Largest Event: B8.1 from Region 2738 at 20/0050 UT
X-ray background flux (1.0-8.0 A) April 19: A8.2
Radio Flux 10.7 cm at 20/2300 UTC (Penticton): 72
Solar Wind Speed at 20/1645 UTC: 345.1 km/s, Density: 0.7 p/cm^3


Forecast:

activity level will be master.dailyForecast.activity.level0
Event probabilities: Class C: 05, Class M: 00, Class X: 00, Proton: 00
X-ray background flux (1.0-8.0 A): in the range A0.0-A1.5
Radio Flux 10.7 cm: a fluctuation in the range 70-73

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