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

INFO FROM SIDC - RWC BELGIUM 2021 Aug 01 12:39UTC

The visible solar disc is spotless and the X-ray flux is below C-level. A
long duration B2.4-class flare was observed near NOAA AR-2849 Plage. The
solar activity is expected to remain at low levels over the next 24 hours.

A large coronal dimming associated with the long duration B2.4-class flare
was observed on July 31 from 15:54 UTC to 18:06 UTC in the south-west
quadrant (near latitude -12 degrees and longitude 30 degree). Further
investigation on this event will be provided as data comes in.

The greater than 10 MeV proton flux was at nominal levels over the past 24
hours and is expected to remain so for the next 24 hours. The greater than
2 MeV electron flux was below the 1000 pfu threshold in the past 24 hours
and is expected to remain so during the next 24 hours. The 24h electron
fluence was at normal levels in the last 24 hours and is expected to stay
at normal levels for the next 24 hours.

The solar wind parameters (as observed by ACE and DSCOVR) show the
continuation of a slow return towards an ambient background and slow solar
wind speed regime. Solar wind speed decreased from about 460 km/s to 400
km/s. Total interplanetary magnetic field strength remained below 5 nT. The
Bz component underwent only weak deviations between -4.0nT and +3.5 nT. The
solar wind conditions are expected to continue it slow returned toward a
slow solar wind speed regime. The solar wind may be temporarily slightly
enhanced later today due to some possible effect of the arrival of the
coronal mass ejection observed on July 28 at 10:36 UTC (with a projected
speed of 400 km/s).

The geomagnetic conditions were mostly quiet over the past 24 hours with
some short periods of unsettled condition observed at the local station
Dourbes (K-Dourbes = 3). The conditions are expected to remain quiet as the
Earth is expected to remain in the mostly slow solar wind speed regime for
the next 24 hours. 

Latest SWAP image

SWAP latest image

Latest USET H-alpha image
USET latest Halpha image

Latest LYRA curve

Latest LYRA Curves

Latest Callisto Observations

Daily estimated sunspot number
EISN

Most recent alerts

2021 Jul 25 1238 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

2021 Jul 17 1040 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2021 Jul 17 1138 UTC
A halo CME was observed on LASCO C2 starting at 05:36 UT on 17 July. This [more]

2021 Jul 03 1820 UTC
A class X1.5 solar X-ray flare occurred on 2021/07/03 with peak time 14:29UT [more]