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


Solar X-ray flux remained below C level throughout the period.
NOAA region 2764 (responsible for the M1 flare on May ) had been numbered
at the start of the period due to the presence of a single polarity spot,
but it has meanwhile already decayed into plage. A new region still behind
the South East limb appears to be active and may increase flaring
probabilities in the next days.
Overall the probability for C class flares remains low currently.

There were no Earth directed Coronal Mass Ejections (CMEs) observed in
coronagraph data.

The greater than 10 MeV proton flux levels were at background values and
are expected to continue to be at background level.
The greater than 2 MeV electron flux has been nominal over the past days.

Solar wind speed continued to decline from just under 400 km/s to around
330 km/s currently. The total magnetic field increased yesterday afternoon
and remained between 5-7.5nT since then, with a consistent negative Bz
component of around -5nT. The magnetic field phi angle switched briefly
into the negative sector during yesterdays afternoon.
Solar wind is expected to remain near nominal over the next days.

Geomagnetic conditions were quiet to unsettled (both NOAA Kp and local K
Quiet to unsettled conditions are expected over the next 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 Jun 01 1232 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

2019 Oct 25 0924 UTC
Geomagnetic conditions have reached moderate storm levels (NOAA Kp=6 for [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]