Real-world data from diverse domains require real-time scalable analysis. Large-scale data processing frameworks or engines such as Hadoop fall short when results are needed on-the-fly. Apache Spark's streaming library is increasingly becoming a popular choice as it can stream and analyze a significant amount of data. In this paper, we analyze large-scale geo-temporal data collected from the USGODAE (United States Global Ocean Data Assimilation Experiment) data catalog, and showcase and assess the ability of Spark stream processing. We measure the latency of streaming and monitor scalability by adding and removing nodes in the middle of a streaming job. We also verify the fault tolerance by stopping nodes in the middle of a job and making sure that the job is rescheduled and completed on other nodes. We design a full-stack application that automates data collection, data processing and visualizing the results. We also use Google Maps API to visualize results by color coding the world map with values from various analytics.