Abstract: Based on the original operational limited area model, a new high resolution limited area model was developed and started operational run on May 15, 1996. Besides the increasements of horizontal resolution, the main improvements in the model are: (1) introduction of more reasonable physical processes, such as soil process, the budget of radiation on surface, surface friction and vertical diffusion in PBL; (2) Kuo scheme is replaced by mass flux scheme in the cumulus convection parameterization. The results of quasi-operational run are reviewed completely