Welcome to the Solar Influences Data Analysis Center (SIDC), which is the solar physics research department of the Royal Observatory of Belgium. The SIDC includes the World Data Center for the sunspot index and the ISES Regional Warning Center Brussels for space weather forecasting.
Press release - May 06, 2015: Extreme flaring activity (NL-FR-EN)


Solar activity was very low with a background X-ray flux at lower B-level
and no C-class flares in the past 24 hours. At most low C-class flares are
expected. A few long filaments are visible (one centered at S30W20 and one
at N15E25), but yet show no sign of an upcoming eruption. No Earth-bound
CMEs were observed.
Earth is inside a slow solar wind with a magnetic field of maximal
magnitude 5 nT. Geomagnetic activity is quiet (local K at Dourbes and
estimated planetary NOAA Kp <4) and is expected to remain so in the next 24

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

2015 May 25 1204 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

2015 May 22 0149 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2015 May 22 0536 UTC
CACTus detected a halo CME yesterday May 21 22:24. Given the absence of [more]

2015 May 05 2246 UTC
A class X2.7 solar X-ray flare occurred on 2015/05/05 with peak time 22:11UT [more]

Science Highlights

May 20, 2015: Twisted beauties

May 06, 2015: A stethoscope for the Sun

Apr 30, 2015: The wall

Apr 15, 2015: NOAA 2321: one, two or three groups?

Apr 09, 2015: Impressive filament eruption

click here for all science highlights


May 06, 2015: Extreme flaring activity (NL-FR-EN)

Mar 20, 2015: Solar Eclipse

Mar 11, 2015: Extreme flaring activity (NL-FR-EN)

Click here for all the press releases

Good to know

Natural Hazards for Aviation Workshop - June 2 2015

ESWW12 - November 23-27, 2015 - Abstract submission!

Mark the date: 11 June 2015 - STCE annual meeting