On August 28, a vigorous tropical wave entered the Atlantic. It moved west-northwestward over Cabo Verde, bringing strong storms to the islands on August 30. Two days later, it acquired enough organization to be designated Tropical Depression Twelve. The system began to move north-northwestward toward a low in the eastern Atlantic and strengthened into Tropical Storm Katia. Katia managed to develop a decent area of strong thunderstorms and intensified further, reaching peak winds of 60 mph on September 2.
However, as it gained latitude and moved away from the tropics, wind shear increased out of the south and the storm encountered much drier air. Rapid weakening followed. Katia slowed down and turned back northwest as it ran into a low-level subtropical ridge. It weakened to a tropical depression early on September 4 and then a remnant low later the same day.
The image above shows Katia at its peak intensity on September 2.
Katia did not threaten any land areas as a tropical cyclone during its journey through the eastern Atlantic.
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