Reconnection During May 27-28, 1997

This substorm was embedded in the recovery of a storm caused by a magnetic cloud. The substorm occurred after a long period of southward IMF and magnetospheric pulsations.
The plot shows the location of the ISTP spacecraft. WIND and IMP8 were in the solar wind, GEOTAIL was in the magnetotail, close to midnight, INTERBALL was in the southern magnetosheath, near the bowshock.

POLAR UVI images show intense auroral activity in a large area in the evening sector on May 27.