In preparation for the 2022 chase season, I would like to update my understanding of the “status” of the various global and CAM models that are most commonly used for chasing. I know that many of the models are upgraded each year, that certain upgraded versions may be experimental or operational, and that even as some biases are corrected, others remain and new ones become apparent. Without being a professional meteorologist, it’s impossible to stay on top of all the latest in the field of NWP (heck, I can barely keep up with stuff in my own profession ), so I (and I assume many other ST members) would appreciate any meteorologists willing to share a summarized update of major changes since last season, and/or any useful resources or papers about the topic (as long as not too complex for a relative layman). The objective is to get up to speed on the latest and to provide context for forecasting this spring, i.e. what should we be keeping in mind as we look at various models, based on recent upgrades and/or newly discovered strengths, weaknesses, and biases?