Fri Sep 02 2016 12:57 PM
Re: Tropical Storm Hermine forms in Gulf of Mexico

To add to what Ed has said, it usually takes a pretty stout breeze to knock out professionally installed anemometers, and several were lost overnight. It is incorrect to conclude that the maximum wind speed at a given location was "x" because that was the highest that station reported prior to being sent offline.

Velocity data during Hermine's lowest pressures near and at landfall (982-984mb) showed reliable peak winds of 90 to 115 MPH aloft between 200' and 3000' above the surface, located in a few sizable sections of the incipient eyewall. This coincides well with recon data finding reliable winds at or above 100 MPH at flight level in many locations. While Hermine did not appear to be the most efficient tropical cyclone at working these very strong winds located just above the surface down to the surface, it is reasonable to go with a 20% reduction, and that gels well with anecdotal reports coming in.

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