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


Over the past 24 hours solar activity has been low. No significant flares
have been recorded. No Earth directed Coronal Mass Ejections (CMEs) have
been detected.  The greater than 10MeV proton flux remained at background
levels over the past 24 hours. Solar activity is expected to remain low
over the next 24 hours.

The solar wind speed has fluctuated between 350 and 415 km/s over the past
24 hours. The total magnetic field strength fluctuated around 6 nT for the
first part of the period and then slowly increased to a maximum of around 9
nT at around 7:00 UT. The Bz component fluctuated around 0 nT, ranging
between -6.3 and +7.7 nT.

Geomagnetic conditions ranged between Kp index 0-3 (NOAA) and local K index
0-3 (Dourbes) over the past 24 hours. Quiet to unsettled geomagnetic levels
are expected to continue. Some isolated active intervals are also possible,
due to the expected arrival of a weak solar wind stream associated with a
recurring, negative polarity equatorial coronal hole which traversed the
central meridian on 18 May.

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 May 20 1412 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

2019 May 14 0900 UTC
NOAA Kp is currently equal to 6 (moderate geomagnetic storm, between 3h [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]