| 11. | Accelerating, Betty continued on a westward track while passing south of a subtropical ridge.
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| 12. | Susan subsequently moved towards the southwest as the subtropical ridge of high pressure weakened.
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| 13. | With the rainbands, while moving nearly due northward, through a weakness in the subtropical ridge.
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| 14. | A subtropical ridge to the north of the cyclone resulted in it continuing generally westward.
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| 15. | Hurricane Florence turned to the north and north-northeast through a break in the subtropical ridge.
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| 16. | Tracking west-northwestward along a subtropical ridge to the north, Haima began to form an eye.
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| 17. | After forming, the depression tracked generally westward due to a subtropical ridge to the north.
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| 18. | When the subtropical ridge shifts due to ENSO, so will the preferred tropical cyclone tracks.
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| 19. | Nilam continued to track northwestward under the influence of a low to mid-level subtropical ridge.
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| 20. | Directly under the subtropical ridge are the doldrums, or horse latitudes, where winds are lighter.
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