CGoering@nyiso.com writes to the NYISO_TECH_EXCHANGE Discussion List:

The AMP triggered for Capital, Hudson Valley, Millwood, Dunwoodie, New York
City, and Long Island during hours beginning 9 through 19; for all eleven
zones in New York State during hours beginning 10 through 18; and Long
Island during hours beginning 9 through 20 in the Day-Ahead Market for
August 10, 2001.  Mitigation took place in West, Central, Hudson Valley,
and Long Island as a result of verification of conduct and impact.