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


Solar activity was at very low levels. The visible solar disk was spotless.
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. Solar activity is expected to remain at very low levels.

The solar wind speed fluctuated between 290 km/s and 350 km/s (ACE). The
phi angle alternated between the negative and positive sectors over the
period. Bz varied between -4 and +3 nT.

Geomagnetic activity was quiet, with the Kp index (NOAA) and the local k
index (Dourbes) recording values of 0-1. Quiet conditions are expected to
continue with possible isolated unsettled conditions.

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 22 1147 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]