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Thegreatdr (talk | contribs) →See also: Reordering in alphabetical order and adding TC rainfall forecasting |
Thegreatdr (talk | contribs) →Track models: Adding blurb about the upcoming NCEP Hurricane WRF |
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*'''NOGAPS''' ([[United States Navy]] Global Atmospheric Prediction System)
*'''GFS''' ([[National Weather Service]] [[Global Forecast System]])
Beginning in [[2007]], the [[National Centers for Environmental Prediction|NCEP]] Hurricane-WRF will be used to help predict rainfall from tropical cyclones.<ref>WRF Program Coordinator. [http://wrf-model.org/development/wexob/meetings/Monthly-PC-Report-31Oct04.pdf Monthly Report of the WRF Program Coordinator.] Retrieved on [[2007-04-10]].</ref>
Some models do not produce output quickly enough to be used for the forecast cycle immediately after the model starts running. Most of the above track models (except CLIPER) require data from global weather models, which produce output about four hours after [[synoptic time]]. However, the NHC issues forecasts only three hours after that time, so some "early" models - NHC90, BAM, and LBAR - are run using a 12-hour-old forecast for the current time. "Late" models, such as the GFS and GFDL, finish after the advisory has already been issued. These models are [[interpolation|interpolated]] to the current storm position for use in the following forecast cycle - for example, GFDI.<ref name="NHCsummary_DeMaria"/><ref name="2005_Verification"/>
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