Overview of the ISNet data set and conclusions and recommendations from a March 2004 workshop to review ISNet data

The continuous ISNet operation started 1 May 2003. During mid-summer all three stations were operating and by late July noise reducing eddy fences installed at all network locations. Data obtained were analyzed from two perspectives. One compared infrasonic signal detections with storm data reports of tornadoes and funnels, sorting results by observatory and state. The other perspective reviewed all significant infrasonic signals (i.e. signals typically showing high signal-to-noise ratio, continuous energy, and long duration) and preliminary comparisons were made with the meteorology. Results from both these perspectives are reviewed. A workshop was held in late March 2003 to summarize the data and experiences with the ISNet operations. The conclusions and recommendations are reviewed; including recommendations to continue operation for the 2004 severe weather season and to provide more display options.