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. The Sun was spotless. No
Earth-directed coronal mass ejections (CME) were observed during the
period. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

The solar wind speed gradually decreased from about 400 km/s till 350 km/s
over the period. The total interplanetary magnetic field averaged around 4
nT. Bz varied between -2 nT and +2.5 nT. 

Quiet geomagnetic conditions were observed. Quiet geomagnetic conditions
are expected for the next 48 hours. Isolated periods of unsettled
geomagnetic conditions are possible on August 19 due to influence from a
negative polarity coronal hole.

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

2019 Aug 08 1226 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

2019 Jul 09 0801 UTC
A shock in the solar wind was detected on June 8 at 18:38 UT. The magnetic [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]