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


Solar activity was at very low levels. NOAA Active Region (AR) 2886 (alpha
configuration) continued to decay and has not produced any noticeable
activity for several days. NOAA AR 2887 (beta configuration) produced
several B-class flares over the last 24 hours and is expected to continue
at the same level of activity. NOAA AR 2888 (alpha configuration) has
produced a few B-class flares during the last 24 hours and is expected to
continue in the same way. Over all, several B-class flares are expected for
the next 24 hours, with a fair chance of an isolated C-class flare.

A CME detected over the last 24 hours on the eastern limb of the solar disk
is not expected to be geo-effective.

The greater than 10 MeV proton flux was at nominal levels over the past 24
hours and is expected to remain so for the next 24 hours. The greater than
2 MeV electron flux remained below the 1000 pfu alert threshold and is
expected to remain below this threshold during the next 24 hours. The 24h
electron fluence was at nominal levels and is expected to remain so.

The solar wind speed (as measured by DSCOVR) ranged between 300 to 380
km/s. The total magnetic field ranged from 2 nT to around 7 nT. The Bz
varied between -4 and +5 nT. The interplanetary magnetic field phi angle
was predominantly in the negative sector (directed towards the Sun). The
solar wind speed is expected to continue to reflect a slow solar wind
regime for the next 24 hours.

Geomagnetic conditions were at quiet levels (NOAA Kp and local K Dourbes
0-2). Geomagnetic conditions are expected to remain quiet for the next 24

Latest SWAP image

SWAP latest image

Latest USET H-alpha image
USET latest Halpha image

Latest LYRA curve

Latest LYRA Curves

Latest Callisto Observations

Daily estimated sunspot number

Most recent alerts

2021 Oct 23 1236 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

2021 Oct 16 0803 UTC
DSCOVR registered a fast forward shock in the solar wind at 00:12 UT on [more]

2021 Oct 09 1033 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2021 Jul 03 1820 UTC
A class X1.5 solar X-ray flare occurred on 2021/07/03 with peak time 14:29UT [more]