COMMENT: There are presently two small and simple sunspot groups on the
visible side of the Sun, Catania sunspot group 68 and Catania sunspot group
69 (NOAA AR 2694). Solar activity is extremely low, and there were no
C-class flares reported for more than ten days. We do not expect
significant change in the level of flaring activity.
During last 24 hours there were no Earth directed CMEs reported, and the
solar protons remained at background level.
Solar wind speed is 410 km/s, and the interplanetary magnetic field
magnitude is about 4 nT.
The geomagnetic conditions are presently quiet and we expect them to stay
so in the coming hours.
TODAY'S ESTIMATED ISN : 011, BASED ON 07 STATIONS.
The EISN plot currently reports 11 sunspots based on 9 of 15 reporting
stations with a 1.1 standard deviation. This means that six station reports
have been rejected as outliers.
For December 2017, the ISN monthly mean was 8.2
cf. http://www.sidc.be/sunspots/bulletins/m ... 201712.pdf