Hurricane Categories

Eye of KatrinaThere are five Hurricane Categories: Cat 1 has wind-speeds of 64-82 knots, 2 has wind-speeds of 83-95 knots, 3 has wind-speeds of 96-113 knots, 4 has wind-speeds of 114-135 knots, and 5 has wind-speeds of 135+ knots. There are other measurements such as surge and indicators of damage. The strength or force of the wind is not a linear relationship compared to its speed – it’s exponential – small increases in speed mean big things if you’re being blown on.

Photo credit: alpoma

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