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


The Sun is spotless and did not produce any flares in the past 24 hours.
The chance for a C flare in the next 24 hours is estimated at only 1%.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available
coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24
hours, and is expected to stay at nominal levels in the next 24 hours.

Solar wind speed near Earth as registered by ACE varied between about 325
and 425 km/s in the past 24 hours. The Interplanetary Magnetic Field (IMF)
changed from predominantly towards the Sun to predominantly away from the
Sun at about 22h UT on October 15. The IMF magnitude varied between about 1
and 9 nT. Bz was never below -5 nT for extended periods.

Quiet geomagnetic conditions (K Dourbes between 1 and 2; NOAA Kp between 0
and 3) were registered in the past 24 hours. Quiet to unsettled geomagnetic
levels (K Dourbes < 4) are expected on October 16, 17 and 18.

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 Oct 02 1215 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

2019 Sep 27 0818 UTC
A small Fast Forward shock in the solar wind was detected today (27-Sep-2019) [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]