The Hydrometeorological Prediction Center ( a.k.a. HPC ) is one of nine Service Centers that are part of the National Centers for Environmental Prediction ( NCEP ) , which is part of the National Weather Service , which in turn is part of the National Oceanic and Atmospheric Administration ( NOAA ) of the U.S. government . The Hydrometeorological Prediction Center ( HPC ) is one of nine service centers under the umbrella of the National Centers for Environmental Prediction ( NCEP ) , a part of the National Weather Service , which in turn is part of the National Oceanic and Atmospheric Administration ( NOAA ) of the U.S. government .