What's the difference between a tropical storm and a hurricane?

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by Jeff Renner

Bio | Email | Follow: @Jeffrennerwx

KING5.com

Posted on August 30, 2011 at 6:04 PM

What's the difference between a tropical storm and a hurricane?

Wind speed. Both are storms of tropical origin, fueled by warm sea surface temperatures. Storms with wind speeds of 39 to 73 mph are called a tropical storm; those with wind speeds of 74 mph or greater are called hurricanes.

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