Recently, I went looking to get an update on University of Maryland Baltimore County's efforts to use Streams to build a wildfire monitoring application. It was the subject of a press release for Streams in the fall of 2009. Turns out they completed the application in the fall of 2010, but I hadn't learned of it until just recently.
They describe their project on the web, show how Streams is used to analyze image data and predict how smoke from wildfires will disburse. They've done analysis using historic data sets, and have some really cool Google Earth images. They have even posted the Streams source code to Google. It involved some rather complex modeling and analytics, using the Local Ensemble Transform Kalman Filter (LETKF) as data assimilation algorithm.
So, another cool application for Streams, and reference story!