Hurricanes and pressure

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bordot
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Hurricanes and pressure

#1 Postby bordot » Sat Aug 22, 2009 2:25 am

Hello, I was just wondering why a hurricane's intensity is judged by their pressure?

Thanks.
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jinftl
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Re: Hurricanes and pressure

#2 Postby jinftl » Sat Aug 22, 2009 6:50 pm

The lower the pressure, the greater the pressure gradient....this in turn is what causes wind. In general, the lower the pressure, the higher the resulting winds. A hurricane (or any storm) is an area of lower pressure...so the pressure is really the 'driver', not just a 'descriptive' measurement used to assess storm strength.
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