INFO FROM SIDC - RWC BELGIUM 2017 Oct 21 12:36UTC

From the East limb, returning NOAA region 2682 produced a long duration
M1.1 flare peaking at 23:28 UT on October 20. An associated dimming was
detected by Solar Demon, and an associated Type II radio burst was observed
by Palehua at 23:35 UT with a corresponding speed of 344 km/s. SOHO LASCO
C2 and C3 and STEREO COR2 A have observed an associated bright CME, first
seen in LASCO C2 at 00:00 UT on October 21, from the northeast to the
southeast. Analysis of COR2 A jplots revealed a plane of sky speed of about
385 km/s, yielding a full speed of 770 km/s. Due to the position of the
source, this CME will not be geoeffective. C flares are likely in the next
24 hours (70% probability), with a chance for an M flare (30% probability).
No Earth-directed Coronal Mass Ejections (CMEs) were observed in available
coronagraphic imagery. The greater than 10 MeV proton flux was at nominal
levels.
A small, fast forward shock in the solar wind occurred at 5:16 UT on
October 21. Solar wind speed registered by DSCOVR jumped from about 340 to
365 km/s, while the magnitude of the Interplanetary Magnetic Field (IMF)
jumped from about 4 to 6 nT. Current solar wind speed is about 360 km/s and
current IMF magnitude is about 8.5 nT. The IMF was directed away from the
Sun until it started pointing towards the Sun around 7:40 UT on October 21.
Quiet to unsettled conditions (K Dourbes between 1 and 3; NOAA Kp between 1
and 2) were registered in the past 24 hours. There is a chance for active
geomagnetic levels (K Dourbes = 4) on October 21. Quiet to unsettled
geomagnetic levels (K Dourbes < 4) are expected on October 22 and 23.