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


The x-ray flux has remained at the A level in the past 24 hours, no flares
observed, the situation is not expected to change for the next 24 hours. 

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available
coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24
hours, and is expected to stay at nominal levels in the next 24 hours. The
greater than 2 MeV electron flux passed slightly the 10^3 pfu threshold at
15:30 UT on 24 September, at 21:35 UT it came back to nominal levels but
stayed very close to the limit. At 10:30 UT today it went above the
threshold again, these flux enhancements are expected to remain present for
the next 48 hours.

Solar wind speed near Earth as registered by DSCOVR ranged between 450 and
530 km/s in the past 24 hours. The Interplanetary Magnetic Field is
directed away from the Sun (positive). It had a magnitude between 3 and 6
nT. Bz reached -6 nT.
Geomagnetic conditions have ranged from 0 to 4 both locally and at
planetary levels. The Earth is still inside the relatively fast solar wind
from a coronal hole. The solar wind speed may still go up in the next 48
hours, since the shape of the coronal hole is irregular. Mostly unsettled
to active conditions expected (with possible isolated minor storm

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

2020 Sep 21 1028 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

2020 Jun 30 0725 UTC
The in situ observations show the arrival of the shock wave, this morning [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]