In mid-October 2014, disorganized but deep convection persisted in the Central Pacific at low latitudes.
By October 12, the Central Pacific Hurricane Center (CPHC) noted the potential for tropical cyclogenesis in the vicinity of the convection.
Over the next day, rapid organization occurred as an area of low pressure formed and convection became significantly better organized.
Based on this, advisories were issued on Tropical Depression Two-C at 21:00 UTC.
Further organization continued within the system and the cyclone was eventually upgraded to Tropical Storm Ana by the next day.

A cold front that had been passing through the Central Pacific had begun to weaken a subtropical ridge to Ana's north, which allowed it to gain latitude as it moved west due to deep steering flow.
Under a favorable environment with above-normal sea surface temperatures, Ana gradually intensified as it tracked northwest towards Hawaii, eventually become a hurricane by 21:00 UTC on October 17, shortly before reaching peak intensity nine hours later at 06:00 UTC on October 18 about 120 miles (190 km) southwest of the Big Island.
Ana began to curve westwards, and weakening began to ensue shortly afterwards, and fell below hurricane intensity by 06:00 UTC on October 20.

Ana continued to track westwards away from the Hawaiian islands, until it reached the western periphery of the subtropical ridge and as a cold front began to extend towards it.
At this point, Ana had weakened to a minimal tropical storm.
As it turned northeast, warm sea surface temperatures caused Ana to rapidly reorganize and strengthen, and by 03:00 UTC on October 25, Ana became a hurricane again, with a cloud-filled eye developing aside other structural improvements.
As it accelerated northeast at speeds of 40 mph (64 km/h), Ana succumbed to the wind shear and weakened again to a tropical storm.
By 15:00 UTC on October 26, Ana had transitioned into an extratropical cyclone.
According to the CPHC, this made Ana the longest-lived and longest-tracked tropical cyclone that stayed entirely within the Central Pacific basin.
Ana's extratropical remnant continued to race northeastward across the Pacific Ocean, before making landfall in British Columbia, dissipating afterward on October 28.
In mid-October 2014, disorganized but deep convection persisted in the Central Pacific at low latitudes. By October 12, the Central Pacific Hurricane Center (CPHC) noted the potential for tropical cyclogenesis in the vicinity of the convection. Over the next day, rapid organization occurred as an area of low pressure formed and convection became significantly better organized. Based on this, advisories were issued on Tropical Depression Two-C at 21:00 UTC. Further organization continued within the system and the cyclone was eventually upgraded to Tropical Storm Ana by the next day.
A cold front that had been passing through the Central Pacific had begun to weaken a subtropical ridge to Ana's north, which allowed it to gain latitude as it moved west due to deep steering flow. Under a favorable environment with above-normal sea surface temperatures, Ana gradually intensified as it tracked northwest towards Hawaii, eventually become a hurricane by 21:00 UTC on October 17, shortly before reaching peak intensity nine hours later at 06:00 UTC on October 18 about 120 miles (190 km) southwest of the Big Island. Ana began to curve westwards, and weakening began to ensue shortly afterwards, and fell below hurricane intensity by 06:00 UTC on October 20.
Ana continued to track westwards away from the Hawaiian islands, until it reached the western periphery of the subtropical ridge and as a cold front began to extend towards it. At this point, Ana had weakened to a minimal tropical storm. As it turned northeast, warm sea surface temperatures caused Ana to rapidly reorganize and strengthen, and by 03:00 UTC on October 25, Ana became a hurricane again, with a cloud-filled eye developing aside other structural improvements. As it accelerated northeast at speeds of 40 mph (64 km/h), Ana succumbed to the wind shear and weakened again to a tropical storm. By 15:00 UTC on October 26, Ana had transitioned into an extratropical cyclone. According to the CPHC, this made Ana the longest-lived and longest-tracked tropical cyclone that stayed entirely within the Central Pacific basin. Ana's extratropical remnant continued to race northeastward across the Pacific Ocean, before making landfall in British Columbia, dissipating afterward on October 28.
Hurricane Ana