Building on our experience from CASA in Oklahoma we have configured a 3DVAR analysis system with 400-m grid spacing and an ARPS model system with Incremental Analysis Updating (IAU) for 0-2h forecasts with low latency. Besides providing real-time information for local governments and the National Weather Service, the system can be used as a basis for the testing of observation system impacts. This work describes the current system including recent developments for the handling of upgrades to the operational WSR-88D weather radars. Some testing of a hybrid Bratseth multi-scale successive correction scheme in combination with a 3DVAR scheme at radar scale will be shown and compared to the real-time configuration for some severe storms from the spring of 2014.
Supplementary URL: http://forecast.ou.edu/