Aided by favorable conditions, Ana gradually strengthened while moving westward, threatening to pass over the island chain of Hawaii once or several times as indicated by early forecasts.

Afterwards, Ana weakened and began to fluctuate in intensity as it turned to the north and eventually northeast as it rounded a subtropical ridge and interacted with a cold front before becoming a hurricane briefly again on October 25.

[1] 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.

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.

[1] Ana's extratropical remnant continued to race northeastward across the Pacific Ocean, before making landfall in British Columbia, dissipating afterward on October 28.

[2] Three days later, a tropical storm warning was issued for Kauai and Niihau,[3] and was extended to include portions of the Papahānaumokuākea Marine National Monument.

[1] He reported extensive vegetation damage as well as tree tops levelled at "an estimated Beaufort Wind Scale range of 40–50 mph (64–80 km/h)".