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.


Over the past 24 hours the solar activity was very low, only few B-class
flares have been recorded. Catania sunspot group 55 (NOAA active region
2680) is unlikely to produce any flaring activity. The returning region
(Catania sunspot group 49 / NOAA active region 2676) is currently on the
East solar limb and is the source region of the B-class flares. We expect
the solar activity to increase with B-class flares and a small probability
of C-class flare coming from this returning region.

No Earth directed CMEs have been observed and the solar protons remained at
background level in the past 24 hours.

The Earth is currently inside a slow (around 500 km/s) solar wind flow. The
interplanetary magnetic field magnitude remained below 5 nT and the Bz
component fluctuating between -4 and 4 nT. The solar wind is expected
maintain its nominal conditions over the next days. 

Geomagnetic conditions were quiet to unsettled (local K Dourbes 1-3, NOAA
Kp 2-3) and are expected to remain quiet over the next days.

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

2017 Sep 19 1232 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

2017 Sep 17 1959 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2017 Sep 17 2248 UTC
Newly arrived coronagraph data show two halo CME observed on September [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]

Science Highlights

Sep 21, 2017: NOAA 2673's hidden secrets revealed

Sep 07, 2017: The Sun is throwing a party!

Sep 05, 2017: Weather in space is picking up

Sep 04, 2017: The ultimate eclipse maker PROBA-3

Aug 22, 2017: PROBA2 eclipse observations - first images online

click here for all science highlights


Aug 11, 2017: Eclipse fever

Jun 02, 2017: Extreme Ultraviolet Imager (EUI) ready for launch!

May 28, 2017: A coronal mass ejection as the source of a strong geomagnetic storm (NL-FR-EN)

Click here for all the press releases

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