Welcome to the Solar Influences Data Analysis Center (SIDC), which is the solar physics research department of the Royal Observatory of Belgium. The SIDC includes the World Data Center for the sunspot index and the ISES Regional Warning Center Brussels for space weather forecasting.

Cosmic rays and space weather: research, services and future strategy - May 17

INFO FROM SIDC - RWC BELGIUM 2016 May 02 12:41UTC

There are currently seven numbered sunspot groups visible on the solar
disc, and all have simple configuration of their photospheric magnetic
field. Two most complex groups are Catania sunspot group 64 and 67 (NOAA AR
2536 and 2539, respectively) with the beta configuration of their
photospheric magnetic field.
The strongest, out of two C-class flares reported during last 24 hours, was
the impulsive C3.5 (peaking at 08:42 UT) on May 06. The flare originating
from the newly emerged NOAA AR 2540, and was associated with the EIT wave,
the type II radio burst (indicating the speed of the shock wave to be about
1800 km/s as reported by San Vito Observatory) and the CME. The angular
width of the CME is at the moment not clearly visible (only few frames of
coronagraph data are currently available). However, it seems that the CME
is directed north-east from the Sun-Earth line.
We expect C-class flares in the following 24 hours (probability is about 60
percent).



The Earth is presently inside the fast solar wind (the speed is about 500
km/s). The interplanetary magnetic field magnitude amounts about 7 nT.
Early this morning, negative value of the Bz component of the
interplanetary magnetic field (down to -10 nT) and the fast solar wind
speed (about 500 km/s) induced geomagnetic storm conditions (NOAA reported
planetary K index to be 6 and local station at Dourbes reported K=4). The
arrival of the fast solar wind which induced the geomagnetic storm
conditions could be associated with either of two coronal holes, the low
latitude one on the northern hemisphere (between N10 and N30) or the narrow
and elongated equatorial coronal hole, which both reached the central
meridian in the late evening of April 26.
Currently, the Bz component of the interplanetary magnetic field amounts
about -5 nT and the geomagnetic conditions are quiet to unsettled. However,
if the value of the Bz component decreases again, the intervals of the
active and storm conditions are possible in the coming 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

Latest HUMAIN Callisto qkl

Daily estimated sunspot number
EISN

Most recent alerts

2016 May 02 0953 UTC
The arrival of the fast speed stream induced the geomagnetic storm conditions [more]

2016 Apr 24 1344 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2016 Apr 18 0110 UTC
A class M6.7 solar X-ray flare occurred on 2016/04/18 with peak time 00:29UT [more]

2016 Apr 06 1046 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]


Science Highlights

Apr 26, 2016: NOAA 2529 remains active

Apr 19, 2016: Dynamic NOAA 2529

Apr 12, 2016: Comin' around the bend

Apr 05, 2016: Spectacular prominence eruption

Mar 30, 2016: A dynamic sunspot

click here for all science highlights

Press

Mar 22, 2016 : STCE 10 YEARS - Happy Birthday!

Jan 15, 2016 : Space Technology & Calibration Laboratories - at your service

Dec 01, 2015 : Space Weather - Belgian wins an award

Click here for all the press releases



Good to know

Mercury Transit - May 9 2016, info to follow

Cosmic rays and space weather: research, services and future strategy - May 17 2016

Annual Meeting - June 9 2016

Zemax OpticStudio software course - date to be set

ESWW13 - Call for Working Meetings and contributions to sessions