All of the items you have considered to this point should help you with your precipitation forecasts. Statistical guidance on probability of precipitation is also available from the NGM, AVN, and MRF models via the links listed for this section. National Weather Service forecasts and observations can be accessed via the "Iowa" link. Examine a recent plot of surface data via the "RAP Surface Data" link and a loop of radar imagery from the "RAP Radar Data" link.