INFO FROM SIDC - RWC BELGIUM 2018 Jul 17 12:40UTC

Solar activity is low and there were no even B-class flares reported during
last 24 hours. We expect such a low flaring activity to persist in the
coming hours.
Coronagraph images do not show signatures of the Earth directed CMEs, and
the solar protons are at the background level.

The in situ observations indicate arrival of the possible ICME. The
increase of the interplanetary magnetic field magnitude (up to 15 nT),
observed at about 20 UT on July 16, was followed by rotation of the
magnetic field phi angle, increase of the solar wind speed and temperature,
and decrease of the density. Solar counterpart of this structure is
presently unclear, and one of the possibility is the large prominence
eruption from the south-west quadrant of the Sun, observed on July 13 at
about 22 UT.
The solar wind speed is presently about 420 km/s and the interplanetary
magnetic field magnitude is about 6 nT.
The increase of the solar wind speed, associated with patchy equatorial
coronal hole which reached central meridian on July 16, is expected at the
Earth late on July 19. 
Due to longer interval of the negative value of the Bz component of the
interplanetary magnetic field (down to -5nT) local station at Dourbes
reported slightly disturbed geomagnetic conditions o (K=4) at about 21 UT
on July 16, and NOAA reported value of the Kp=3.
The geomagnetic conditions are presently quiet, and we expect quiet
geomagnetic conditions to persist in the coming hours.