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From: Jesse Ferrell (WeatherMatrix) (jesse{at}weathermatrix.net)
Date: Mon Sep 15 2003 - 07:06:56 EDT

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At 03:43 AM 9/15/2003 +0000, Yahoo! Groups Notification wrote:

>Hello,
>
>A message has been sent to the stormreports group from
>
> janschutz{at}yahoo.com
>
>The message summary:
>--------------------
>FROM: janschutz{at}yahoo.com
>DATE: Sun, 14 Sep 2003 20:43:20 -0700 (PDT)
>SUBJECT: Re: In relationship to Andrew, just how powerful is Isabel? Has
>
>In relationship to Andrew, just how powerful is Isabel? Has
>the Nat'l Hurricane Center ever officially designated a
>hurricane as a "super hurricane"?
>
>Just wondering.
>

Hurricane Andrew was not declared Cat 5 until last year, before that it was
considered a Cat 4, so Isabel WAS considerably worse than Andrew (160 vs.
145) however they did upgrade Andrew last year to 165 so now they are
close. The key with Andrew was that it was Cat 5 AT LANDFALL. Cat 5
hurricanes in the Atlantic are not uncommon but it is very UNcommon for
them to be that strength at landfall. Worse, Andrew made landfall twice,
once in Florida and once in Louisiana.

There is not really a term "super hurricane" though I think people use it
like "super typhoon" below.

"Super-typhoon" is a term utilized by the U.S. Joint Typhoon Warning Center
for typhoons that reach maximum sustained 1-minute surface winds of at
least 65 m/s (130 kt, 150 mph). This is the equivalent of a strong
<D1.htm>Saffir-Simpson category 4 or category 5 hurricane in the Atlantic
basin or a <D2.htm>category 5 severe tropical cyclone in the Australian basin.

"Major hurricane" is a term utilized by the National Hurricane Center for
hurricanes that reach maximum sustained 1-minute surface winds of at least
50 m/s (96 kt, 111 mph). This is the equivalent of <D1.htm>category 3, 4
and 5 on the Saffir-Simpson scale. The term "intense hurricane" is
unofficial, but is often used in the scientific literature. It is the same
as "major hurricane".

Sources
http://www.nhc.noaa.gov/1992andrew.html
http://www.nhc.noaa.gov/NOAA_pr_8-21-02.html
http://www.aoml.noaa.gov/hrd/tcfaq/A3.html

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Jesse Ferrell - Meteorologist / Webmaster / Founder - WeatherMatrix
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