Hello, I am Sam and I'm from California. Back in September of 2019, a small tornado touched down near the town that I live in. I remember being horrified because I had never been in a tornado warning before. Ever since that day I've been very interested in weather. Currently, I use GR2 Analyst, I primarily use it to track storms during tornado season and to analyze past severe weather events, I find volumetric mode, cross sections, and derived products especially useful. I wish to learn more about GR2 Analyst and how WSR-88D Doppler radar work.