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.


Solar activity is extremely low without any flaring activity reported
during last 24 hours. We do not expect any change of the activity in the
coming hours.
Coronagraph images do not show signatures of the Earth directed CMEs, and
the solar protons are at the background level.

Solar wind speed has increased and it presently amounts about 510 km/s. The
maximum solar wind speed (about 550 km/s), during last 24 hours was reached
at about 11:20 UT today. The interplanetary magnetic filed magnitude is
presently about 8 nT.
The patchy but rather extended equatorial coronal hole (possibly even
connected with the southern polar coronal hole), has reached central
meridian early this morning. The associated fast solar wind is expected at
the Earth in the mid of the day on July 24. The geomagnetic conditions are
presently unsettled to quiet and we expect such a geomagnetic conditions to
persist in the coming hours.

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

2018 Jul 09 2211 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

2018 Jul 06 1102 UTC
CORRECTION - Concerning:PRESTO issued at 20:10 UT on 05-Jul-2018. Following [more]

2018 May 04 1644 UTC
A halo or partial-halo CME was detected with the following characteristics: [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]

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