The SIDC is part of the Royal Observatory of Belgium and a partner in the Solar Terrestrial Center of Excellence (STCE).


The solar activity has been at very low levels over the past 24 hours. The
Sun is currently spotless and the X-ray flux remained below B-level. Solar
activity is expected to remain at low levels for the next 24 hours.

No earth-directed coronal mass ejections (CMEs) have been observed in the
available coronagraphic imagery.
The greater than 10 MeV proton flux was at nominal values. 

The solar wind was slightly enhanced over the past 24 hours: The total
magnetic field fluctuated around 10 nT, the solar wind speed varied around
315 km/s, and the southern component of the magnetic filed remained
positive. After this relatively short and minor disturbance, the solar wind
parameters are expected to return to the nominal level within the next 24

Quiet geomagnetic conditions were observed over the past 24 hours, and is
expected to remain so for the next period. 

Latest SWAP image

SWAP latest image

Latest USET H-alpha image
USET latest Halpha image

Latest LYRA curve

Latest LYRA Curves

Latest Callisto Observations

Latest HUMAIN Callisto qkl

Daily estimated sunspot number

Most recent alerts

2019 Nov 01 1000 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

2019 Oct 25 0924 UTC
Geomagnetic conditions have reached moderate storm levels (NOAA Kp=6 for [more]

2018 May 04 1644 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2017 Sep 10 1650 UTC
A class X8.9 solar X-ray flare occurred on 2017/09/10 with peak time 16:06UT [more]