Tropical Depression Twelve formed on Sept. 14 over the western Cabo Verde Islands and strengthened into Tropical Storm Karl by the evening of Sept. 15.

Karl moved westward across the open Atlantic Ocean before turning more northwest on Sept. 21.

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Karl then turned more northward by Sept. 23 and passed just east of Bermuda on the morning of Sept. 24 with 65 mph sustained winds.

Bermuda International Airport was glanced by rainbands on the western edge of Karl on the morning of Sept. 24, recording a wind gust to 43 mph as Karl's center came within 50 miles of the archipelago.

Karl turned northeastward later on Sept. 24 and its maximum sustained winds increased to 70 mph, well to the northeast of Bermuda.

The National Hurricane Center declared Karl post-tropical on Sept. 25 as it raced into the North Atlantic with 70 mph winds.

This post-tropical cyclone produced areas of tropical storm-force winds over the North Atlantic into Sept. 26 as it merged with another extratropical storm east-northeast of Newfoundland.

Incidentally, according to Colorado State University tropical scientist, Dr. Phil Klotzbach, Karl was the longest-lived Atlantic named storm never to reach hurricane intensity in 13 years .

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