The cause was high fluxes from the first of 6-7 solar CMEs

Nov 27, 2000 Shift Report
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We are in the SI safe mode. SCS 107 ran , kicked off by EPHIN. RADMON
tripped at 331:19:46. The cause was high fluxes from the first of 6-7
solar CMEs. We plan to resume normal operations tomorrow at ~ 5:30 am
EST, although, we may find that fluxes rise above acceptable levels,
requiring us to stay in the safe configuration.

We had maneuvered to the new target position for OBSID 2041, the
source KI 284, as expected for the timing of the quaternion update and
enabling of RADMON after belt passage. We can stay at this orientation
only until day 333:16. The telecon decided that ACE rates were so high
that we needed to activate SCS 107. However, from the high GOES rates
it was predicted that EPHIN would have already run SCS 107. This
prediction proved correct.