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.


NOAA AR 2671 has again increased in size and produced C-class flares, there
were four in past 24 h. The strongest one did not originate in NOAA AR 2671
though, it was a C4.4 peaking at 20:02 UT on August 18 and came from a
region rotating into view from the east limb. A CME erupted in the vicinity
of this region (seen at 14:24 UT on August 18 by LASCO-C2), directed to the
east and will not be geoeffective. C-class (and possibly M-class) flares
can be expected

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar
protons have remained at background levels over the past 24 hours.

The Earth is still inside a high speed solar wind stream, the speed is
around 680 km/s with interplanetary magnetic field intensity of 7 nT. As a
consequence, Kp reached 5 and the local K went up to 4. More disturbed
conditions can be expected in the next 24 h.

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 Aug 03 2228 UTC
DSCOVR registered a jump in both solar wind density and magnitude of the [more]

2017 Jul 30 1211 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

2017 Jul 23 1044 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2017 Apr 03 1504 UTC
A class M5.8 solar X-ray flare occurred on 2017/04/03 with peak time 14:29UT [more]

Science Highlights

Aug 02, 2017: Night of the (shooting) Stars 2017 ***CANCELLED***

Jul 27, 2017: NOAA 2665's fireworks continues!

Jul 19, 2017: The Bastille Day 2017 event

Jul 10, 2017: A Sunday morning solar observing session

Jul 04, 2017: An eruptive surprize

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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