Precipitation from two cold, winter orographic storms during February 2005 and April 2006 in Yosemite National Park and the Sierra Nevada was simulated with the NCAR mesoscale weather model called WRF (Weather Research and Forecasting model). The sea-surface temperature of the Pacific Ocean upwind of the mountains was prescribed with six different fixed temperatures and the resulting simulated precipitation compared to the actual storm precipitation. Warm sea-surface temperatures increased the precipitation above normal by a factor of about six. Based on the likely increase in precipitation rate and frequency of storms following the Genesis Flood, glaciers thousands of feet thick would have easily developed in a few hundred years following the Genesis Flood.