Evolution of HWRF Initial implementation in 2007 hurricane season –Model design and development of movable nested grid started in 2002 –Initial HWRF workshop at NSF in 2004 –28 different configurations tested individually (each with about 200 simulations) before initial implementation –Extensive 3-season (2004-2006) pre-implementation testing of HWRF for all storms in the Atlantic and Eastern Pacific basins Vortex initialization upgrades in 2008 –Address intensity bias for weaker systems, modifications to storm balance Infrastructure upgrade and transition to P6 in 2009 –Capability enhancements to allow coupling to HyCOM and Wave Watch-III –Script enhancements (identical scripts for NCO operations and EMC parallels) Physics and initialization upgrades in 2010 to improve the forecast skill.
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