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 facilitating parallel computation and system extensibility. The model serves a wide range of meteorological applications across scales from tens of 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 to generate atmospheric simulations based on real data (observations, analyses) or idealized conditions. WRF offers operational forecasting a flexible and computationally-efficient platform, while providing advances in physics, numerics, and data assimilation contributed by developers in the broader research community. WRF is currently in operational use at NCEP, AFWA, and other centers.

WRF has a large worldwide community of registered users (over 25,000 in over 130 countries), and workshops and tutorials are held each year at NCAR. There are two dynamical core variants 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 detailed information on contents and use of the modeling system, users should visit the WRF-ARW and WRF-NMM home pages (see above).


For WRF questions or comments, email wrfhelp: .
For website questions or comments, email webmaster: webmaster .
















Upcoming Events

Information on events may be found at: Events.

Title: 16th Annual WRF Users' Workshop
Type of Event: announcement
Start Date: 06 - 15 - 2015
End Date: 06 - 19 - 2015

Title: WRF User's Summer Tutorial
Type of Event: announcement
Start Date: 07 - 27 - 2015
End Date: 08 - 07 - 2015


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: