Precipitation from three winter storms during December, 2005; November, 2006; and October, 2008 in Yellowstone National Park was simulated with the National Center for Atmospheric Research (NCAR) mesoscale weather model called WRF (Weather Research and Forecasting model). The sea-surface temperature of the Pacific Ocean upwind of the western United States was prescribed with six different fixed temperatures and the resulting simulated precipitation compared to the actual storm precipitation. Sea-surface temperatures over 30°C (86°F) increased the precipitation above normal by as much as a factor of four. Based on the likely four-fold increase in precipitation rate and doubling of the frequency of storms following the Genesis Flood, glaciers over a kilometer (3,300 ft.) thick would have developed in a few hundred years.