Types Of Winds

Types of winds are determined by several factors. The velocity of the air current, and the direction of that current can determine what type of wind it is, as well as the wind’s danger potential. Wind of 19 to 24 miles per hour (mph) is classified as a breeze, and isn’t harmful. When the wind reaches a speed of 47 mph, it’s called a strong gale, and may cause some damage to fruit crops and other vegetation. At 64-75 mph, the wind is considered a wind storm and may be dangerous to both crops and properties. Above 75 mph, wind is a hurricane, and can be catastrophic to crops, properties, and man himself.

A tornado is the most dangerous kind of wind. A swirling, energetic wind that rotates in a counterclockwise direction, sometimes at a speed of over 300 mph is the tornado. No one knows the true speed of a tornado, but the destruction is surely measurable, both in terms of human and property destruction.

Mariners use a scale drawn up in 1805 by Rear Admiral Sir Francis Beaufort, a famous British hydrographer, who developed a table of the strengths of winds based on the effect of wind on sailing ships. Here are some of Sir Francis Beaufort’s ratings;

0-1 MPH – Calm, 1-2 MPH – Light Breeze, 4-7 MPH – Slight Breeze, 8-12 MPH – Gentle Breeze, 13-18 MPH – Moderate Breeze, 19-24 MPH – Fresh Breeze, 25-31 MPH – Strong Breeze, 32-38 MPH – Moderate Gale, 39-46 MPH – Fresh Gale, 47-54 MPH – Strong Gale, 55-63 MPH – Whole Gale, 64-75 MPH – Wind Storm, Above 75 MPH – Hurricane.

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