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


NOAA AR 2773 has lost its sunspot, the Sun is spotless. No flares in the
past 24 hours, none expected above the B level. 

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 so in the next 24 hours. The greater than 2
MeV electron has passed the 10^3 pfu threshold at 03:00 UT, it was also
above the threshold five hours starting at 13:30 on 26 September.

Geomagnetic conditions have reached minor storm conditions at planetary
levels (Kp = 5) and active conditions locally (KDourbes = 4, but the latest
data are missing). The Earth is still inside the fast solar wind from the
low latitudinal extension of the northern polar coronal hole. Its influence
is fading, mostly unsettled conditions expected for the next 24 hours. In
about 48 hours the fast solar wind emanating from a low latitude large area
coronal hole (still connected to the northern polar one) will affect the
Earth and may cause up to major storm 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

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]