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

INFO FROM SIDC - RWC BELGIUM 2021 Sep 15 12:30UTC

The solar activity was at very low levels with no C-class flare activity
over the past 24 hours. NOAA Active Region (AR) 2866 (Catania group 40) and
Catania group 39 are currently rotating out of Earth's view and their
magnetic topology cannot be estimated with enough accuracy. As they are
both expected to disappear from Earth's view in the next 24 hours, the
chances of a detectable C-class flare are small.

No Earth-directed CMEs were detected in the available coronagraph imagery
over the past 24 hours. There was a number of CMEs detected during the last
24 hours but almost all are either back-sided or too far to the east of the
solar disk, as viewed from Earth. There was a single CME that was located
in the west of the solar disk (as viewed from Earth) but it is judged too
small and too slow to be geo-effective.

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

The Solar Wind (SW) parameters measured by ACE and DSCOVR show a gradual
return to a slow wind regime. The SW speed gradually dropped from 480 and
380 km/s in the past 24 hours. The total magnetic field remain at around 5
nT with only very short drops to values as low as 2.9 nT. The Bz magnetic
field component varied between -4.3 and 4.2 nT but was mostly negative
during the last 24 hours. The interplanetary magnetic field remain positive
(directed away from the Sun) throughout the last 24 hours. The solar wind
parameters are expected to reflect a slow SW regime in the next 24 hours.

The geomagnetic conditions over the past 24 hours were globally quiet (NOAA
Kp index 1-2) and locally quiet to unsettled (K Dourbes 1-3). They are
expected to become quiet both globally and locally in the next 24 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

Daily estimated sunspot number
EISN

Most recent alerts

2021 Sep 14 1729 UTC
A partial halo CME was visible in STEREO-A/COR2 and SOHO/LASCO C2 images, [more]

2021 Sep 07 1217 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

2021 Aug 27 0148 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]