Plot Description: Normalized standard deviation of Vertically Integrated Water Vapor Transport (IVT) (shaded according to scale) and ensemble mean IVT (contours) from the European Centre for Medium-Range Weather Forecasts (ECMWF) Ensemble Prediction System (EPS). Normal data are forecasts from the previous 30 days from the same initialization time (N=# in the top right indicates the number of model runs used).