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