Forecaster summary - Issued 2021-04-04T00:12:49

The high energy electron flux (greater than 2 MeV) is likely to continue at the current background to moderate values to start the period, but may reach high levels through the diurnal cycle on days 2 and 3 (5th & 6th), and more especially on day 4 (7th) when a more significant high speed stream is expected to become established at L1 from CH40 in the southwest. The associated 24 hour fluence is forecast to remain below the Active (1e8 integrated pfu) level, but perhaps with a more general rising trend later in the period. However, persistence values for both flux and fluence (and hence current REFM data) will be of more limited use through this forecast period, with CH40 not evident on the sun's previous rotation.