Forecaster summary - Issued 2018-06-04T00:31:21

The high energy electron flux has been at high levels during the last 24 hours, due to the connection to the high speed stream from coronal hole 98. These levels are expected to persist for days 1 and 2, before gradually declining as the high speed stream eases.  The associated electron fluence is currently at  Active levels, and continues to gradually build.  This is likely to exceed the Very Active (1e9 particles cm^-2 sr^-1 day^-1 ) threshold (60% chance) on day 1, with a chance of continuing into day 2, before gradually subsiding in response to electron flux rates also beginning to trend downwards.  No further enhancements are then anticipated.