27th November


Following a solar sector boundary (SSB) change that occurred at about
26/1615 UTC, solar wind velocity increased slightly, from approximately
280 km/s to approximately 320 km/s. Velocities remained steady near the
320 km/s mark through most of the period before starting to decrease
just after 0400 UTC. IMF total field displayed a very slow enhancement
throughout the period, increasing from 2 nT at the beginning to 5 nT by
the end of the period. IMF Bz remained mostly positive with isolated
ventures southward near the beginning of the period. Bz ended the period
at 2 nT.

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