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Saffir–Simpson scale

Discover how scientists measure the super-strong winds of hurricanes to keep us safe!

Images

A Visible Image of the Atlantic's Category 2 Hurricane Michael

A Visible Image of the Atlantic's Category 2 Hurricane Michael

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Key Facts

Scale Type
Tropical cyclone wind intensity scale.
Number of Categories
Five, numbered 1 through 5.
Minimum Wind Speed for Category 1
74 miles per hour.
Maximum Wind Speed for Category 5
157 miles per hour or more.
Wind Measurement Basis
One-minute average of maximum sustained winds at 10 meters above the surface.

Meet the Hurricane Wind-O-Meter!

Imagine a giant measuring stick for hurricane winds! That's kind of what the Saffir-Simpson scale is. It's a way for scientists to tell everyone how strong a hurricane's winds are. They give hurricanes numbers from 1 to 5, like levels in a video game. The higher the number, the scarier the winds! It helps people know if they need to get ready for a big storm.

Who Invented This Cool Scale?

Two smart people, Herbert Saffir and Bob Simpson, came up with this idea a long time ago. Herbert was an engineer who knew a lot about buildings and wind. Bob was a hurricane expert who worked for the government. They wanted a simple way to describe how powerful hurricanes could be. They combined their knowledge to create this special scale that helps us understand these powerful storms.

Why Knowing Hurricane Strength Matters!

Knowing how strong a hurricane's winds are is super important! It's like knowing if a dog is a tiny puppy or a big, strong dog. A Category 1 hurricane has winds like a strong gust of wind that can blow leaves around. But a Category 5 hurricane has winds so strong they can blow over buildings! This scale helps people decide if they need to leave their homes and find a safe place.

How They Measure the Wind!

Scientists measure the fastest winds in a hurricane. They look at winds that blow steadily for a whole minute. For a Category 1 hurricane, these winds are at least 74 miles per hour. That's faster than a car on the highway! For the strongest Category 5 hurricanes, the winds are super-duper fast, over 157 miles per hour. That's faster than many race cars!

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Based on content from Wikipedia · Licensed under CC BY-SA 4.0