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. The visible solar disc
was spotless and the X-ray flux remained below B-class level. No Earth
directed Coronal Mass Ejections (CMEs) have been detected in the available
coronagraph imagery. 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 around 345 and 405 km/s over
the past 24 hours. The total magnetic field strength fluctuated between 0.6
and 5 nT. The Bz component ranged between approximately -3 and +3 nT. The
phi angle was positive until 8 UT this morning (22 May) when it switched
into the negative sector. 

Geomagnetic conditions have been quiet over the past 24 hours, with Kp
index (NOAA) and local K index (Dourbes) both ranging between 0 and 2.
Quiet to unsettled geomagnetic conditions are expected over the next 24
hours, due to the weak solar wind stream associated with a series of small
negative polarity coronal holes.

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]