Abstract: The National Weather Service has developed an operational objective system which produces 2?6 h probability forecasts of severe IOM storms. The probabilities Pertain to square areas of about 85 n mi (155 km) on a side which ...

Abstract: The Local AWIPS (Advanced Weather Interactive Processing System) MOS (model output statistics) Program (LAMP) quantitative precipitation forecast (QPF) system produces 1?22-h forecasts of precipitation over the conterminous ...

Abstract: All known long-term records of forecasting performance for different types of precipitation forecasts in the National Weather Service were examined for relative skill and secular trends in skill. The largest upward trends ...

Abstract: The recent emergence of the National Digital Forecast Database as the flagship product of the National Weather Service has resulted in an increased demand for forecast guidance products on fine-mesh grids. Unfortunately, ...

Abstract: The Meteorological Development Laboratory (MDL) of the National Weather Service (NWS) has developed high-resolution Global Forecast System (GFS)-based model output statistics (MOS) 6- and 12-h quantitative precipitation ...

Abstract: Comparative verification of operational 6-h quantitative precipitation forecast (QPF) products used for streamflow models run at National Weather Service (NWS) River Forecast Centers (RFCs) is presented. The QPF products ...

Abstract: Gridded fields of monthly mean relative frequency for ≥0.10 (2.5), ≥0.25 (6.4), ≥0.50 (12.7), ≥1.00 (25.4), and ≥2.00 (50.8) in. (mm) of precipitation have been developed for 1-, 3-, and 6-h periods over the conterminous ...