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.

INFO FROM SIDC - RWC BELGIUM 2014 Oct 23 12:54:24

During the past 24 hours, Catania sunspot group 88 (NOAA AR 2192) produced
an X1.6 flare (peaking yesterday at 14:28 UT) and an M1.1 flare (peaking
today at 09:50 UT). These flares were not associated with CMEs. Catania
sunspot group 93 (NOAA AR 2195) close to the east solar limb produced an
M1.4 flare peaking at 15:57 UT, and this flare was associated only with a
narrow CME. Catania sunspot group 88 will remain the main flare source as
it continues to grow (this is the largest sunspot group during the two
solar cycles) and maintains the beta-gamma-delta configuration of its
photospheric magnetic field. Although the sunspots of the main magnetic
polarities are somewhat separating, we still expect the flaring activity up
to X-level from this sunspot group. As the Catania sunspot group 88 is
currently situated at the solar central meridian, a major eruption in this
active region may lead to a geoeffective CME and a proton event.  The Earth
is currently inside a slow (around 430 km/s) solar wind flow with average
(around 5 nT) interplanetary magnetic field (IMF) magnitude. The
geomagnetic conditions are quiet and are expected to remain so. Yesterday
an interval of K = 5 was reported by IZMIRAN and an interval of K = 4 by
Dourbes (K index according to NOAA remained at the quiet to unsettled
levels with K < 4). This interval of slightly disturbed geomagnetic
conditions was produced by a slow solar wind interval with predominantly
negative north-south IMF component Bz. 

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Daily estimated sunspot number
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Most recent alerts

2014 Oct 22 1833 UTC
Catania sunspot group 88 (NOAA AR 2192) produced an X1.6 flare peaking [more]

2014 Sep 07 1337 UTC
The latest halo CME alert generated by the CACTus software package: 025|2014/09/06 [more]

2014 Aug 08 1211 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]


Science Highlights

Oct 22, 2014: X1.6 flare on 22 October (NL-FR-EN)- UPDATED

Oct 21, 2014: NOAA "Boom! Boom!" 2192

Oct 19, 2014: X1.1 flare on 19 October (NL-FR-EN)

Oct 08, 2014: An M7 surprise

Oct 01, 2014: Another farside blast

click here for all the news items

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