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 mostly quiet over the past 24 hours. Regions
Catania 74/NOAA AR 2804 had a low flaring activity while Catania 75/NOAA
12805 is currently a plage.  The solar flaring activity is expected to
remain at low levels for the next 24 hours.

A Coronal Mass Ejection recorded by LASCO on Feb 26 07:48UT, associated
with the B9.5 flare on Feb 26 07:02UT is not expected to be Earth

The greater than 10 MeV proton flux was at nominal levels in the past 24
hours and is expected to remain so in the next 24 hours. Over the past 24
hours, the greater than 2 MeV electron flux crossed the 1000 pfu threshold
until Feb 26 2:10UT. It is expected to remain at about threshold levels for
the next 24 hours. The greater than 2 MeV electron fluence was at moderate
levels in the past 24 hours. It is expect to remain so for the next 24
hours. With no space weather effects expected until about Feb 29 they are
expected to follow a decreasing trend.

The past 24 hours the solar wind speed ranged between 385 km/s and 465
km/s. The total magnetic field values were between 0 nT and 6 nT. The Bz
component fluctuated between -6 nT and 5 nT. The orientation of the
Interplanetary Magnetic Field (IMF) varied. Over the next 24 hours the
solar wind parameters are expected to continue in this decreasing trend.

The geomagnetic conditions over the past 24 hours were quiet to unsettled.
They are expected to return to remain at quiet levels for the next 24

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

2021 Feb 27 1244 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

2021 Feb 21 0734 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2021 Feb 21 1114 UTC
A partial-halo Coronal Mass Ejection (with and angular width of about 152 [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]