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The model is designed to provide short-range hourly weather forecasts for North America. The Rapid Refresh was officially made operational on 1 May 2012, replacing the Rapid Update Cycle (RUC). The model also serves as the boundary conditions for the higher-resolution High Resolution Rapid Refresh ( HRRR ) model, that uses a 3 km (1.9 mi) grid ...
Graphical 12-hour forecast output from RUC2. The Rapid Update Cycle (RUC) was an American atmospheric prediction system that consisted primarily of a numerical forecast model and an analysis system to initialize the model. The first operational implementation was created in 1994, with 60km resolution and a 3-hour cycle.
Despite its use in a wide range of emergency response events, HYSPLIT is not a U.S. Environmental Protection Agency (U.S. EPA) preferred or recommended model for regulatory purposes. AERMOD, a steady-state gaussian plume dispersion model, is the US EPA's preferred model for estimating point source impacts for primary emitted pollutants. [22]
The NWS forecast predicts that Park Fire smoke will generally head north and east, affecting communities such as Redding and Red Bluff. The current forecast runs to Sunday. Park Fire smoke forecast
The WRF-NMM solver variant was based on the Eta model, and later nonhydrostatic mesoscale model, developed at NCEP. The WRF-NMM (NMM) is supported to the community by the Developmental Testbed Center (DTC). The WRF serves as the basis for the RAP and HRRR models: high-resolution operational forecast models run regularly at NCEP. The WRF also ...
Weather Underground is a commercial weather service providing real-time weather information over the Internet.It provides weather reports for most major cities around the world on its Web site, as well as local weather reports for newspapers and third-party sites.
Summer-like heat and smoke from Canadian wildfires return to Southern New England this week. The high temperature in Providence should reach 80 degrees Tuesday and Wednesday and potentially ...
It comprises a spectral atmospheric model with a terrain-following vertical coordinate system coupled to a 4D-Var data assimilation system.In 1997 the IFS became the first operational forecasting system to use 4D-Var. [2] Both ECMWF and Météo-France use the IFS to make operational weather forecasts, but using a different configuration and resolution (the Météo-France configuration is ...