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 Sun has been spotless for 18
consecutive days (SILSO). No coronal mass ejections (CME) were observed
over the last 24 hours. The greater than 10 MeV proton flux was at nominal
values. A diffuse and fragmented negative polarity equatorial coronal hole
(CH) has nearly finished its transit of the central meridian.

Solar activity is expected to remain at very low levels.

Solar wind speed undulated between 330 and 390 km/s (DSCOVR). Bz varied
between -3 and +3 nT. The interplanetary magnetic field was mostly directed
away from the Sun (positive sector). Quiet geomagnetic conditions were
Mostly quiet geomagnetic conditions are expected until the arrival of the
wind streams associated with the negative polarity CHs, currently expected
for 17 June. Active geomagnetic conditions are possible from then onwards,
with a chance on a minor storming episode.

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 Jun 09 1213 UTC
A small filament eruption was seen at approximately 00:00 UT yesterday [more]

2019 Jun 09 1206 UTC
END OF ALL QUIET ALERT ...................... The SIDC [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]