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. A 10-degrees
long filament in a spotless active region (former sunspot group NOAA 2733)
is currently located at N10E30. No coronal mass ejections were observed
over the last 24 hours. The greater than 10 MeV proton flux was at nominal
values. A diffuse and patchy positive polarity equatorial coronal hole (CH)
finished its transit of the central meridian yesterday 17 February.

Solar activity is expected to remain at very low levels.

Solar wind parameters were indicative of a small disturbance starting on 17
February around 15 UT. Wind speed varied mostly between 340 and 370 km/s
(DSCOVR). Bz ranged between -6 and +6 nT, with a 5-hour stretch of Bz
values near -5 nT centered around 00UT. The direction of the interplanetary
magnetic field (phi angle) was variable. Quiet to unsettled geomagnetic
conditions were observed. 
Quiet to unsettled geomagnetic conditions are expected to continue, until
the arrival of the co-rotating interaction region and wind stream from the
positive polarity coronal hole on 19 or 20 February. This may result in
active conditions, with a small chance on an isolated minor storming

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 Feb 16 1225 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

2018 Nov 05 1320 UTC
Geomagnetic conditions have reached moderate storm levels on a planetary [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]