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TheNorth American Mesoscale Model (NAM) is anumerical weather prediction model run byNational Centers for Environmental Prediction for short-termweather forecasting. Currently, theWeather Research and Forecasting Non-hydrostatic Mesoscale Model (WRF-NMM) model system serves as the dynamical core of the NAM model. The WRF replaced the Eta model on June 13, 2006.[1] The NAM is run four times a day (00, 06, 12, 18 UTC) out to 84 hours, with 12 km horizontal resolution and with three-hour temporal resolution, providing finer detail than other operational forecast models. Itsensemble is known as theShort Range Ensemble Forecast (SREF) and runs out 87 hours.
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