The high energy electron flux (greater than 2MeV) is expected to fluctuate diurnally between background and moderate levels on day 1 (26th). On day 2 (27th) the anticipated onset of the high speed stream from CH56/- is expected to result in an increase in the electron counts, likely fluctuating between moderate and high levels. The corresponding electron fluence is therefore expected to increase from day 2 (27th) and is likely to exceed the Active threshold (1e8 integrated pfu) on days 3 and 4 (27th and 28th).