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Hurricane Weather Research and Forecasting Model

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HWRF 96 hour (4 day) forecast for Hurricane Katrina heading for New Orleans in 2005.

The Hurricane Weather Research and Forecasting (HWRF) model is a specialized version of the Weather Research and Forecasting (WRF) model and is used to forecast the track and intensity of tropical cyclones. The model was developed by the National Oceanic and Atmospheric Administration, the U.S. Naval Research Laboratory, the University of Rhode Island, and Florida State University.[1] It became operational in 2007. [2]

About the HWRF Model

The HWRF is a new computer model that will be the operational backbone for hurricane track and intensity forecasts by the National Hurricane Center (NHC).[2] The model will use data from satellite observations, buoys, and reconnaisance aircraft, making it able to access more meteorological data than any other hurricane model before it.[2] The model will eventually run at an even higher resolution which will allow smaller scale features to become more discernible.[2]

The following model description can be found in the Product Description Document for the National Centers for Environmental Prediction's Model Analyses & Forecasts[3]:
— The HWRF provides operational guidance for forecasters at the National Hurricane Center in both the Atlantic and East Pacific basins. Hurricane forecasts are produced on demand every six hours at 00, 06, 12, and 18 UTC for up to four tropical storms at a time. The HWRF hurricane model graphics are available at six hour increments up to 126 hours. Often, there are less than 126 hours.

— The model is a nested grid system with an outermost domain and a nested grid with resolutions of 27 and 9 km respectively and 42 vertical levels. The HWRF vortex initialization uses the 6 hour forecast as the first guess, then uses regional GSI 3DAR data assimilation to produce the initial hurricane vortex that matches the intensity and structure parameters provided operationally by NHC. The HWRF is coupled to a high-resolution version of the Princeton Ocean Model for the Atlantic Basin. The ocean initialization system uses observed altimeter observations to provide a more realistic Loop Current and Gulf Stream conditions.

— Information on the model products can be found at the production model web page http://www.nco.ncep.noaa.gov/pmb/products/hur/

Mary Glackin, acting director of NOAA’s National Weather Service, says that "It is vital that we understand all the factors of hurricane forecasting throughout the life of a storm and HWRF will provide an unprecedented level of detail. Over the next several years, this model promises to improve forecasts for tropical cyclone intensity, wave and storm surge, and hurricane-related inland flooding." She also says that the HWRF "will be one of the most dynamic tools available" for forecasters.[2]

See also

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References

  1. ^ "Weather Forecast Accuracy Gets Boost with New Computer Model". UCAR press release. Retrieved 2007-07-09.
  2. ^ a b c d e "New Advanced Hurricane Model Aids NOAA Forecasters". NOAA Magazine. Retrieved 2007-07-09.
  3. ^ "Product Description Document: NCEP Model Analyses & Forecasts" (PDF). NCEP. Retrieved 2007-07-11.

Websites with the HWRF model


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