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


The solar activity was mostly quiet over the past 24 hours. A C2.0-class
flare was observed today in August 15 at 06:47 UTC. This flare was located
in the decaying sunspots NOAA-AR 2770, which is now turning over the West
limb. The solar activity is expected to remain at low levels.

A Coronal Mass Ejection associated with the C2.0-flare was most probably
triggered along with this C2.0-flare. Imagery from the upper corona will be
available soon to confirm this. No Coronal Mass Ejections with
Earth-components were identified in the available coronagraphic imagery or
on-disc in the last 24 hours.

The greater than 10 MeV proton flux was at nominal levels over the past 24
hours and is expected to stay at nominal levels for the next 24 hours. The
greater than 2 MeV electron flux decreased further and fluctuated from
nominal to moderate levels over the past 24 hours . The flux is expected to
remain between nominal and moderate levels over the next 24 hours.

The Earth continued to be under the influence of the slow solar wind
streams with the solar wind speed around 290-320 km/s, the total
interplanetary magnetic field below 5 nT, and the Bz magnetic field
components fluctuating between -4 nT and +5 nT. The solar wind conditions
are expected to remain mostly nominal for the next days. 

Geomagnetic conditions were quiet, and quiet conditions are expected for
the next following days. 

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 10 1222 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [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]