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The WMO abbreviated heading is a component of the WMO Meteorological message agreed by WMO members for use in exchanging data and products on the Global Telecommunication System between National Meteorological Centers of the world.

The NAM, or the North American Model, is a mesoscale model with a horizontal resolution of 12 kilometers (about 7 miles) that's designed to handle smaller systems across the United States and parts of Canada and Mexico.

Where the NDFD Conus data is restricted only to the USA, the NBM data covers the entire grid, including the portions of Canada and Mexico that the NDFD data omits. The NBM Conus domain is also slightly larger, extending further west and north compared to the NDFD domain.

The WMO Binary Universal Form for the Representation of meteorological data (BUFR) is a binary code designed to represent any meteorological data set employing a continuous binary stream. It has been designed to achieve efficient exchange and storage of meteorological and oceanographic data.

The North American Mesoscale Forecast System (NAM) is one of the National Centers For Environmental Prediction's (NCEP) major models for producing weather forecasts. NAM generates multiple grids (or domains) of weather forecasts over the North American continent at various horizontal resolutions.

The National Blend of Models (NBM) is a nationally consistent and skillful suite of calibrated forecast guidance based on a blend of both NWS and non-NWS numerical weather prediction model data and post-processed model guidance.

It has a much better resolution than global models such as the GFS and takes small-scale weather phenomena into account, which makes it the most effective model in that region.