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


Solar flaring activity is low, with only one B-class flare reported during
last 24 hours. However, as the NOAA AR 2770 presently has beta
configuration of its photospheric magnetic field, it might be the source of
B-class and also isolated C-class flares in the coming hours. During last
24 hours there were no Earth directed CMEs and the solar protons remained
at the background level.
Although Earth is still inside the fast solar wind, the wind speed has
strongly decreased during last 24 hours and its present value is 510 km/s.
The interplanetary magnetic field magnitude is about 3 nT.
The fast solar wind associated with the equatorial coronal hole of positive
polarity that has reached central meridian in the morning of August 03, can
be expected at Earth tomorrow. The geomagnetic conditions are presently
quiet, and we expect quiet to unsettled conditions 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

2020 Aug 03 0909 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

2020 Jun 30 0725 UTC
The in situ observations show the arrival of the shock wave, this morning [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]