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Uploaded on Feb 18, 2010
This animation was created from data produced from NCAR's Weather Research and Forecasting model (also known as WRF, Advanced Research WRF or ARW) Version 2.1.0. It is a 72-hour forecast of Hurricane Katrina, initialized at 0000 UTC August 27, 2005, about 60 hours before landfall. The path of the hurricane in the animation predicts almost precisely the path of the actual hurricane.
In this animation, the white isosurface represents the cloud water mixing ratio (QCLOUD) and the colored surface at the bottom is the relative wind speed where red indicates the highest velocity.