Issued on 2020 Oct 19 1824 UTC

The in situ observations show the arrival of the shock wave, Oct 19th at 13:45UT. The

magnetic field magnitude, increased from 5 to 10 nT, with a simultaneous increase at

the solar wind speed (maximum value reached was 440 km/s), density and the

temperature. The solar origin of the observed shock is presently unclear. Currently

the Bz component of the interplanetary magnetic field returned to being negative and

no geomagnetic disturbance is expected (K Dourbes reached 3 and currently K=2 Kp=3,

as last reported by Dourbes and NOAA, respectively).

Reference for this alert

All Presto solar alerts