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


No flares in the past 24 h. No active regions visible on the solar disk.
Solar activity is expected to be low.
No Earth directed CMEs in past 24 h. Solar protons have remained at
background levels over the past 24 hours.

The solar wind speed is at 420 km/s with interplanetary magnetic field
magnitude of 5 nT. Geomagnetic conditions have been quiet. The solar wind
emanating from a small negative polarity equatorial coronal hole may affect
the Earth in 48 h (up to k = 4), quiet conditions expected until then.

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 Apr 24 1034 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

2019 Mar 24 2127 UTC
A shock in the solar wind is visible in DSCOVR data at 20:43 UT, most likely [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]