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


Solar flaring activity continues to be very low and we expect such a low
level of flaring activity in the coming hours. During last 24 hours there
were no Earth directed CMEs and the solar protons remained at the
background level.
The solar wind speed is presently about 360 km/s and the interplanetary
magnetic field magnitude is 4 nT. Elongated and patchy equatorial coronal
hole of positive polarity has reached central meridian this morning. The
solar wind originating from this coronal hole might arrive to Earth late on
December 17.
The geomagnetic conditions are presently quiet and we expect quiet to
possibly unsettled geomagnetic conditions (due to expected arrival of the
solar wind originating from the equatorial coronal hole of negative
polarity that reached central meridian in the evening of December 10) in
the coming hours.

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]