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 B level throughout the period.
There are no active regions on disk and X-ray flux is expected to remain at
background levels.

The filament eruption reported yesterday did not have any noticeable CME
No Earth-directed CME's were detected in coronagraph images.

Solar high energy proton fluxes were at background levels and are expected
to remain so.

Solar wind conditions were nominal, with Solar wind speed around 350 km/s
throughout the period and total magnetic field under 5nT. The magnetic
field phi angle was in the negative sector.
Solar wind is expected to increase significantly by tomorrow noon October
24 due to the recurrent high speed stream from an equatorial positive
polarity coronal hole.

Geomagnetic conditions were quiet (NOAA Kp 0-1 and local K Dourbes 0-2).
Geomagnetic conditions are expected to reach active levels with periods of
minor geomagentic storming associated to the expected high speed stream.
There is a chance that moderate storm levels (K=6) be reached.

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 Oct 18 1225 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

2019 Sep 27 0818 UTC
A small Fast Forward shock in the solar wind was detected today (27-Sep-2019) [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]