Forecaster summary - Issued 2018-06-28T00:34:45

The high energy electron flux (greater than 2 MeV) at GEO started at moderate levels, then increased to high from 27/1255 UTC, peaking at 3920 pfu at 27/2010 UTC. The electron flux is likely to remain at moderate to high levels through the period in response to elevated solar winds, although may fall temporarily  if there is an increase in geomagnetic activity due to the arrival of CH05 high speed stream. 

The corresponding 24-hour electron fluence rose above the Active threshold (1e8 integrated pfu) at 27/2100 UTC, ending the period at 1.28e8 integrated pfu. The fluence is expected to remain above the Active threshold over the coming four days.

REFM predicted values are likely to be too high, with the Very Active threshold not currently expected to be reached over the coming days.