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.

FAST WARNING 'PRESTO' MESSAGE  from the SIDC (RWC-Belgium) 2017 Mar 27

The arrival of the high speed stream (HSS) from the huge negative polarity
coronal hole(CH) earlier today (00:00-03:00 UT) has created a strong
geomagnetic disturbance. Now, Kp reached major storm levels (Kp=6) during
the 09:00-12:00 UT interval, while K Dourbes was at minor storming (K=5)
during the same time slot. Kp is currently 6 (27-Mar-2017 December, 13:30
UT) and the solar wind speed is around 552 km/s, while Bz varying mostly
between -14 and +12 nT. 

The geo-environment is expected to remain under the influence of the HSS
for at least next two days, which will result in further minor to major
storm episodes.

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 Mar 27 1332 UTC
The arrival of the high speed stream (HSS) from the huge negative polarity [more]

2016 Nov 05 1349 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2016 Jul 24 0516 UTC
A class M5.5 solar X-ray flare occurred on 2016/07/23 with peak time 05:31UT [more]

2016 Jul 05 2210 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

Science Highlights

Mar 27, 2017: A good catch

Mar 22, 2017: Sleeping Beauty

Feb 28, 2017: PROBA2 observed a solar eclipse

Feb 28, 2017: First GOES-16 solar images

Feb 28, 2017: EUI getting ready!...

click here for all science highlights


Oct 26, 2016: High-speed solar wind causes major geomagnetic storm (NL-FR-EN)

May 04, 2016: Mercury Transit

Mar 23, 2016: STCE 10 years - Happy Birthday!

Click here for all the press releases

Good to know


14th European Space Weather Week

Topical Issue for the SWSC Journal