The Weather Research & Forecasting Model

The Weather Research and Forecasting (WRF) Model is a next-generation mesoscale numerical weather prediction system designed to serve both atmospheric research and operational forecasting needs. It features two dynamical cores, a data assimilation system, and a software architecture allowing for parallel computation and system extensibility. The model serves a wide range of meteorological applications across scales ranging from meters to thousands of kilometers. The effort to develop WRF began in the latter part of the 1990's and was a collaborative partnership principally among the National Center for Atmospheric Research (NCAR), the National Oceanic and Atmospheric Administration (represented by the National Centers for Environmental Prediction (NCEP) and the (then) Forecast Systems Laboratory (FSL)), the Air Force Weather Agency (AFWA), the Naval Research Laboratory, the University of Oklahoma, and the Federal Aviation Administration (FAA).

WRF allows researchers the ability to produce simulations reflecting either real data (observations, analyses) or idealized atmospheric conditions. WRF provides operational forecasting a flexible and computationally efficient platform, while offering advances in physics, numerics, and data assimilation contributed by the many research community developers. WRF is currently in operational use at NCEP, AFWA, and other centers.

WRF has grown to have a large worldwide community of users (over 20,000 in over 130 countries), and workshops and tutorials are held each year at NCAR. There are two dynamical core versions of WRF, each with its own web page. The Advanced Research WRF (ARW) is supported to the community by the NCAR Mesoscale and Microscale Meteorology Division: The WRF-NMM (NMM) is supported to the community by the Developmental Testbed Center (DTC):

This site ( provides general information on the WRF model and its organization and offers links to WRF users' pages, real-time applications, and WRF announcements. For full, updated information on use of the modeling system, users are encouraged to visit the WRF-ARW and WRF-NMM home pages (see above).


WRF Questions or Comments: email
Website Questions or Comments: email Webmaster
















Upcoming Events

Complete details at: Events

Title: WRF Users's Tutorial
Type of Event: tutorial
Start Date: 07 - 21 - 2014
End Date: 08 - 01 - 2014


WRF Users' Workshop Presentations

The WRAB's strategic plan for WRF model development: Research-Community Priorities for WRF-System Development


Final Report of the Technical Workshop on WRF-ESMF Convergence, February 9 - 10, 2006, Boulder, CO. (pdf)


There is a WRF Users Forum at: