The SIDC is part of the Royal Observatory of Belgium and a partner in the Solar Terrestrial Center of Excellence (STCE).


During last 24 hours several B-class flares were observed, and the
strongest reported flare was B9.6 (peaked at 19:31 UT on March 24),
originating from the NOAA AR 2736 (no Catania numbering). This active
region, which was also source of many B-class and some C-class flares
during past few days, has rotated over the west solar limb. Another active
region which was observed on the visible side of the solar disc during last
days, NOAA AR 2735 (no Catania numbering), is presently situated at the
west solar limb. We can expect occasional B-class flares in the next 24
hours, while C-class flares are still possible but not probable. 
There were no Earth directed CMEs reported during last 24 hours and the
solar protons remained at the background level.

The in situ observations (DSCOVR) indicate arrival of the CME-driven shock
wave, at about 20:43 UT on March 24. The shock observed in the solar wind
was associated with the March 20 CME. The arrival of the shock wave did not
induced disturbed geomagnetic conditions (local station at Dourbes and NOAA
reported only K=2 and Kp=2, respectively). The solar wind speed is about
330 km/s and the interplanetary magnetic field magnitude is 5 nT.  The
geomagnetic conditions are presently quiet and we expect them to stay so in
the coming hours. The arrival of the fast solar wind, associated with the
negative polarity equatorial coronal hole that is expected tomorrow, might
induce unsettled to possibly active geomagnetic conditions.

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

2019 Mar 24 2127 UTC
A shock in the solar wind is visible in DSCOVR data at 20:43 UT, most likely [more]

2019 Mar 10 1159 UTC
END OF ALL QUIET ALERT ...................... The SIDC [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]