Forecaster summary - Issued 2018-04-12T00:15:39

High energy electron counts increased significantly on 11th due to the established coronal hole high speed stream, with the 24 hour integrated electron fluence rising above the active threshold by 11/1800 UTC. In the absence of any significant geomagnetic activity (a decreasing risk through the period), flux levels are forecast to remain at moderate to high levels throughout, even as high speed stream influences wane later in the period. Active levels of fluence are therefore expected to persist through the period, with a chance of reaching very active levels (greater than 1e9 integrated pfu), especially on day 2 (13th).