page_title: Hurricane Ana
section_title: Preparations and impact
hierarchical_section_title: Hurricane Ana / Preparations and impact
caption_attribution_description: English: Tropical Storm Ana (02C) in the North Pacific Ocean
context_page_description: Hurricane Ana was the second tropical cyclone in 2014 to threaten the U.S. state of Hawaii with a direct hit, after Iselle in August. The twenty-first named storm and fifteenth hurricane of the 2014 Pacific hurricane season, Ana formed from a disturbance that formed in the Central Pacific in mid-October. It rapidly consolidated, and a tropical depression developed by October 13. 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. By October 17, it had strengthened to a hurricane south of Hawaii and reached its peak intensity shortly afterwards while also making its closest approach. 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. Ana transitioned into an extratropical cyclone on October 26, and raced across the northwest Pacific before dissipating by October 28 after it came ashore in Western Canada.
context_section_description: Beginning on October 15, various tropical cyclone warnings and watches were issued for Hawaii, starting with a tropical storm watch for the Big Island. Three days later, a tropical storm warning was issued for Kauai and Niihau, and was extended to include portions of the Papahānaumokuākea Marine National Monument. The threat of the storm forced parks and beaches to close in the state. While passing south of Hawaii, Ana produced heavy rainfall on most of the islands, peaking at 11.67 in (296 mm) at Keaumo on the Big Island. The rains caused the Sand Island water treatment plant in Honolulu to overflow, which sent about 5,000 gallons of partially treated wastewater into Honolulu Harbor.
  Although no real-time wind reports of damage from Ana was reported on the Big Island, a post-storm report in November 2014 by resident Keith Robinson reported that there was damage in the southern vicinity of Niihau. 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)". Although it was not officially verified, the CPHC decided to treat the report as part of the conditions experienced in the area that was under a tropical storm warning.
caption: Tropical Storm Ana near French Frigate Shoals on October 22.
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