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 and is expected to remain so. The Sun
was spotless. Two filament eruptions took place resp. around 20UT near
S35W10 and shortly after midnight near N45W50. Coronal dimming was observed
in both cases. STEREO-A coronagraphic imagery indicates two related CMEs: a
faint one around 02UT (250 km/s) and a more solid and faster one around
03:30UT (360 km/s). Based on the limited imagery, at least the first CME
may have an earth-directed component. Geomagnetic effects are possible
around 13 July, but standing-by further imagery for a more accurate

The greater than 10 MeV proton flux and the greater than 2 MeV electron
flux were at nominal levels during the last 24 hours and are expected to
remain so.

No earth-directed coronal mass ejections (CMEs) were observed in available
coronagraphic imagery.

Solar wind speed continued its gradual decline from about 370 km/s to its
current values near 325 km/s (DSCOVR). Bz varied between -4 and +3 nT,
being mostly negative after 03UT. The direction of the interplanetary
magnetic field (phi angle) was directed away from the Sun (positive

Geomagnetic activity was at quiet levels. Geomagnetic conditions are
expected to be mostly quiet, with a chance on an unsettled interval later
today or early on 10 July if a glancing blow from the 5 July CME would

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Most recent alerts

2020 Jul 06 0948 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [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]