High-Resolution Hail Observations: Implications for NWS Warning Operations and Climatological Data
New operationally-relevant perspectives of hail observations are revealed by the examination of approximately 30 unique cases of high-resolution hail datasets acquired from the ongoing field research project, A Hail Spatial and Temporal Observing Network Effort (HailSTONE). These high-resolution hail observations provide tremendous spatiotemporal insight into the hail-fall character of convective storms, and mitigate the inherent limitations of Storm Data. This study provides a preliminary investigation of both real-time and post-event hail reports available to operational meteorologists, and compares these reports to high-resolution hail observations collected by HailSTONE. The detailed and high-quality data resolution also affords an opportunity to verify the maximum hail size forecast in NWS warnings and statements. In this study, observed size biases in NWS products and in the historical hail database are explored, as is current radar-based conceptual models for hail size prediction.