摘要: The use of Quantitative Precipitation Forecasts (QPFs) in hydrologic model will211significantly impact River Forecast Centers' (RFCs) ability to forecast accurate 211river stages over a specific drainage basin. Improvements in n... 展开 The use of Quantitative Precipitation Forecasts (QPFs) in hydrologic model will211significantly impact River Forecast Centers' (RFCs) ability to forecast accurate 211river stages over a specific drainage basin. Improvements in numerical models, 211the modernization of the NWS, and the establishment of the Hydrometeorological 211Analysis and Support (HAS) Unit at each of the 13 national RFCs have made it 211possible to generate QPFs locally. The implementation of the Windows QPF (WinQPF) 211software program at local Weather Forecast Offices (WFOs) allows forecasters to 211generate and disseminate gridded precipitation forecasts to RFCs twice daily. 211These QPFs include four-six hour forecasts of areally averaged rainfall over 211river basins in the local Hydrologic Service Area (HSA). HAS Unit forecasters 211then composite these local QPFs for their area of responsibility as input into 211hydrologic models. In order for forecaster to improve their QPF prediction, WFOs 211need verification schemes to compare RFC-calculated Mean Areal Precipitation 211(MAP) to WFO generated QPFs. This will aid in the identification of local 211precipitation forecast biases, and provide real time quality control of station 211generated QPFs. This study examines selected widespread precipitation events over 211the Fort Worth HSA. A locally developed QPF verification scheme is used to 211provide insight into the regional climatology of MAP, the identification of 211station wet and dry biases, and the accuracy of local QPF efforts to predict mean 211areal precipitation amounts. 收起