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) 2887 (beta
configuration) has showed signs of further flux emergence and has been
producing B-class flares. NOAA AR 2886 (Catania sunspot region 64) remained
stable. Catania sunspot group 65 decayed into a plage region. Two new
active regions have also begun to rotate onto the south-east of the solar
disk. Solar activity is expected to be low over the next 24 hours with
C-class flares probable, particularly from NOAA AR2887 and from the new ARs
now rotating onto the solar disk.

No Earth directed CMEs have been detected in the available coronagraph

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 (DSCOVR) ranged between 330 to 390 km/s. The total
magnetic field ranged from 1 nT to around 6 nT. The Bz varied between -5
and +5 nT. The interplanetary magnetic field phi angle was predominantly in
the negative sector (directed towards from the Sun). The solar wind speed
is expected to continue to reflect a slow solar wind regime on Oct 24 and
Oct 25.

Geomagnetic conditions were at quiet levels (NOAA Kp and local K Dourbes
recorded values of 0-1 and 0-2, respectively). Geomagnetic conditions are
expected to be quiet on Oct 24 and Oct 25.

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]