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Home > WRF NMM documentation

WRF-NMM was developed by the National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Prediction (NCEP). The NOAA/NCEP and the Developmental Testbed Center (DTC) are currently maintaining and supporting the WRF-NMM portion of the overall WRF code (Version 2) that includes:

  • Nonhydrostatic Mesoscale Model (NMM) dynamic solver, including one-way static nesting;
  • WRF Preprocessing System (WPS) / Standard Initialization (SI) package;
  • Numerous physics packages contributed by WRF partners and the research community;
  • WRF Postprocessing (WPP) package and scripts for several graphical packages.


NOMADS contains NAM output over CONUS (awphys) on the 12-km Lambert-conic conformal 218 grid and over Alaska (awak3d) on the 11.25-km polar-stereographic 242 grid. The domains covered by the NAM and these output grids can be viewed at

WRF-NMM users home page:
Implementation briefing:
NCEP model Graphics:
NCEP-NMM Home Page:


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