Fig. 5: Precipitation prediction discrepancies from NowcastNet at varying lead times for four extreme rainfall events.
From: Hybrid physics-AI outperforms numerical weather prediction for extreme precipitation nowcasting
Comparison of precipitation prediction discrepancies (in mm/h) from NowcastNet model at different lead times (T + 10 min, T + 1 h, T + 2 h, and T + 3 h) with MRMS for four extreme rainfall events on August 21, 2021 (T = 8:00 UTC), February 17, 2022 (T = 18:00 UTC), February 16, 2023 (T = 12:00 UTC) and March 15, 2024 (T = 3:00 UTC), within the TVA area. The basemap shows US state boundaries. Blue shades represent underestimation, while red shades represent overestimation of precipitation. With increasing lead time, discrepancies between MRMS and NowcastNet predictions become more pronounced.
