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


NOAA AR 2736 has decreased in size and complexity (it has now beta magnetic
field configuration) and did not produce anymore C-class flares in the past
24 h. It did produce many B-class flares, including a B9.9 peaking at 23:59
UT on March 23. The region is now rotating over the west limb, C-class
flares remain possible but less likely.
No Earth directed CMEs in past 24 h. Solar protons have remained at
background levels over the past 24 hours.

The solar wind speed is 265 km/s with interplanetary magnetic fields of 3
nT. The CME from March 20, expected to arrive yesterday (with 50%
probability) has not done so yet. It may have been slowed down by the very
slow solar wind that we are seeing now (in that case it could arrive
today), or it may have missed the Earth. The fast solar wind emanating from
a negative polarity equatorial coronal hole may affect the Earth in 48 h.
Quiet conditions were observed in the past hours,  the situation will
change only if the CME arrives, in that case  K up to 5 can be expected.

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 Mar 20 1735 UTC
STEREO-A COR2 beacon data shows at least two CMEs this morning, related [more]

2019 Mar 10 1159 UTC
END OF ALL QUIET ALERT ...................... The SIDC [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]