The Next Generation 1-km Warn-on-Forecast System for Short-term Prediction of Flash Flood Producing Intense Rainfall

The NOAA National Severe Storms Laboratory is currently developing the next generation Warn-on-Forecast System at 1-km horizontal grid spacing (WoFS-1km) to achieve Warn-on-Forecast goals. The experimental WoFS-1km uses the WRF-ARW dynamical core and NOAA GSI-EnKF data assimilation software. The WoFS-1km science and technology that is currently under development will be transitioned to the next-generation MPAS-A dynamical core and JEDI data assimilation software in the near future. This presentation will assess the ability of WoFS-1km in predicting flash flood producing extreme rainfall using recent record-breaking events.