A method and monitoring center for monitoring occurrence of events in a monitored area, where a monitoring equipment displays information that reflects sensor data reported from sensors in the monitored area. When the monitoring center detects an abnormal event, it identifies a set of sensors which are potentially impacted by the event, and triggers the sensors to enter a vigilance state of elevated operation and to deliver enhanced sensor data. Further, a representation of the abnormal event is auto-zoomed on the monitoring equipment based on the enhanced sensor data from the sensors to increase resolution of the displayed representation.