Just received a mail from CME Group:
"October 28, 2012
To Our Valued Customers,
As a result of the securities industry decision to close US equities markets tomorrow because of Hurricane Sandy, CME Group will be closing its US equity futures and equity options on futures markets on the trading floor and on CME Globex at 8:15 am, CT, tomorrow Monday, Oct. 29. These markets opened at 5:00 p.m. CT today and will remain open until 8:15 a.m. CT tomorrow.
All other CME Group futures and options on futures markets will remain open. We will continue to monitor the situation as well as continue our coordination with other exchanges and will keep you updated as information becomes available.
CME Group"