15th Anniversary of Category Five Hurricanes Elida, Hernan, and Kenna

On July 25, 2002, Hurricane Elida in the eastern Pacific reached Category Five status when its winds reached 155 mph (250 km/hr).  Elida became the first of three east Pacific Category Five hurricanes to form during that busy season.  It was followed by Hurricane Hernan (which became a Cat 5 on sept. 1st) and then …

Paper on how vertical wind shear impacts surface winds in hurricanes published in Monthly Weather Review

Summary: Scatterometers are instruments on aircraft or satellites that are used to measure wind speed and direction at the ocean surface. In this follow-up to a 2016 study, the surface wind in tropical cyclones around the world are studied using a large set of measurements from 2000 to 2011. The impact of tropical cyclone intensity, …

20th anniversary of the first operational synoptic surveillance mission with the NOAA G-IV

  On 14 July, 1997, Tropical Storm Claudette was moving northeastward offshore the east coast of the US.  Eager to test the new Gulfstream-IV (G-IV) jet aircraft and the new Global Positioning System dropwindsonde, the National Hurricane Center tasked the first-ever operational synoptic surveillance mission geared toward improving track forecasts. Initial condition differences in the …

HRD Scientists brief NOAA Aircraft Operations Center personnel on IFEX 2017, Lakeland, FL – 19 July 2017

Intensity Forecast Experiment (IFEX) Program Director Paul Reasor and HRD Director Frank Marks briefed the Aircraft Operations Center (AOC) personnel at their brand new facility at Lakeland Linder Regional Airport on IFEX plans for 2017 and Hurricane Forecast Improvement Project progress, respectively. The two presentations are available in a .zip archive on the anonymous ftp …