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. While rounding the west limb, NOAA
2738 produced 4 B-class flares, the strongest being a B8 flare peaking at
00:50UT. The lone sunspot group currently visible on the solar disk, NOAA
2739, was quiet and is decaying. No earth-directed coronal mass ejections
were observed over the last 24 hours. The greater than 10 MeV proton flux
was at nominal values. An equatorial negative polarity coronal hole (CH) is
transiting the central meridian.

Solar activity is expected to remain at very low levels.

Solar wind speed was fairly steady between 300 and 350 km/s (DSCOVR). Bz
varied between -4 and +6 nT. The interplanetary magnetic field was mostly
directed away from the Sun (positive sector) until about 07:00UT, when it
switched back to towards the Sun (negative sector). Geomagnetic conditions
were at quiet levels, with an isolated unsettled interval (14-17UT)
recorded at Dourbes. 

Quiet geomagnetic conditions are expected to continue, with a chance on an
unsettled interval.

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 Apr 09 1026 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

2019 Mar 24 2127 UTC
A shock in the solar wind is visible in DSCOVR data at 20:43 UT, most likely [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]