In this paper, we performed a high-resolution numerical simulation of Danny over a four-day period, from its genesis stage to its landfall. The simulation began at 0000 UTC 16 July 1997 when only a weak surface low was present over northern Gulf of Mexico. The PSU/NCAR MM5 model with triply-nested (81/27/9 km) grids was able to successfully simulate the development of a small tropical cyclone 72 h into the simulation,and its subsequent landfall over the Gulf coast (at 86 h into the simulation). The simulated low possessed tight surface pressure gradients and a maximum wind of about 30 m/s. Additional numerical experiments indicated that the simulation of the genesis of Danny was very sensitive to the choice of precipitation physics and planetary boundary parameterizations. The best simulation was obtained with the use of Betts-Miller convective parameterization and the NCEP MRF (Medium Range Forecast) model PBL parameterization. Additional experiments are being performed with the use of 3 km and 1 km meshes, and with the use of WRF (Weather Research and Forecast) model. Comparison of model simulated storm structure with radar observations of Danny will be performed and presented at the conference.