In a message sent to residents Sunday afternoon, [Norwalk, Connecticut] Mayor Richard A. Moccia warned of a 16-foot storm surge brought to land by Hurricane Sandy. [...] “I have declared a state of emergency in the City,” he said. “Coastal flooding from this event will peak at midnight on Monday night and will be worse than any flooding Norwalk has experienced in recent history. If you have ever experienced flooding before it is likely you will be flooded in this storm.” Moccia said that the storm will be equal to a Category 4 hurricane and will produce 16 foot storm surges.