Lots of high energy particles at higher latitudes, more expected on 31 July
This from NOAA. .
Geophysical Activity Summary 27/2100Z to 28/2100Z:
The geomagnetic field was at unsettled to major storm conditions.
Major storm periods were observed between 28/0000 to 0300 UTC and 28/0300 to 0600 UTC. Heightened activity was due to the onset of a coronal hole high speed stream. Solar wind speed at ACE increased early in the period from approximately 470 km/s to a maximum of 710 km/s around 28/0400 UTC. Wind speed has been slowly declining and ended the summary period at approximately 570 km/s.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled with isolated active periods possible on 29 July. On 30 July, quiet to unsettled conditions are expected. On 31 July, a coronal hole high speed stream is expected to move into geoeffective position causing unsettled to active conditions with minor storm periods possible.