Commerce Secretary Carlos Gutierrez and NOAA officials, Under Secretary Conrad Lautenbacher and National Weather Service Director D.L. Johnson, today named Xavier William (Bill) Proenza to replace Max Mayfield as the Director of its National Hurricane Center and two other divisions of the NOAA Tropical Prediction Center in Miami. Proenza will become the Director upon Mayfield’s retirement on January 3 after 34 years of federal service at the hurricane center.