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 remains 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 expected enhancements in the solar environment due to the influence of
the coronal hole (which has reached the central meridian on Nov 13) has
arrived yesterday on Nov 16 around  17:00 UTC. The total magnetic field
reached  9.5 nT at 18:00 UTC, the solar wind speed raised up to 450 km/s,
and the southern component of the magnetic filed fluctuated between -7.7 nT
and 9.2 nT. The enhanced solar wind conditions are expected to persist as
long as the Earth remains under the influence of the coronal hole effects. 

While quiet geomagnetic conditions were observed with Kp-index (NOAA),
quiet to unsettle conditions were observed with the local station in
Dourbes (K-Dourbes = 3) in response to the solar wind enhancement. More
active conditions is not excluded, especially with the slow increase of the
solar wind speed and possibly longer period of southward directed Bz

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 17 1156 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]