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 Space Weather: flares (NL-FR-EN)


Solar activity was very low, without any significant flaring. Sunspot
regions 74 (NOAA 2356) and new Catania regions 76 and 77 are to be
monitored while they rotate on the disk. No Earth-bound CMEs were observed.

The solar wind speed has slight increased and achieves values near 400
km/s, while the magnitude of the interplanetary magnetic field is close to
10 nT. Geomagnetic conditions are quiet (K <4) and are expected to slightly
increase within the next 24 hours to
active conditions (K=4).

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 27, 2015: Layer upon layer

May 20, 2015: Twisting beauties

May 06, 2015: A stethoscope for the Sun

Apr 30, 2015: The wall

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

click here for all science highlights


May 06, 2015: Extreme Space Weather: flares (NL-FR-EN)

Mar 20, 2015: Solar Eclipse

Mar 11, 2015: Extreme Space Weather: flares (NL-FR-EN)

Click here for all the press releases

Good to know

Space Weather for Engineers - registration is open

Natural Hazards for Aviation Workshop - June 2 2015

ESWW12 - Abstract submission!

STCE annual meeting - 11 June 2015