* Hurricanes do move forward, but their speed varies significantly. 10-15 mph is a common translation speed for hurricanes, meaning how fast they move across the Earth's surface.

* However, hurricanes also have internal wind speeds that are much faster. These are the winds swirling around the eye of the hurricane, and they can reach speeds of 74 mph or more to be classified as a hurricane.

Here's a better way to think about it:

* Translation speed: The speed at which a hurricane travels across the Earth's surface. This can range from a few mph to over 30 mph.

* Wind speed: The speed of the wind swirling within the hurricane itself. This is what determines the hurricane's category on the Saffir-Simpson Hurricane Wind Scale.

So, while 10-15 mph is a typical translation speed, it doesn't describe the full picture of a hurricane's movement.