Flash Flood in Honolulu County, Hawaii
Flash Flood March 9, 2021 – March 10, 2021 · Honolulu County, Hawaii
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Four feet of water from heavy rain flooded William Henry Road in Kaneohe in windward Oahu. A blocked drain caused the backup of water, inundating some homes in the area. Major flooding problems continued over windward portions of Oahu and the North Shore, especially around Haleiwa and Waialua. The Opaeula Stream overflowed at Haleiwa Road and caused flooding of homes in the area. Also in windward Oahu, flooding was reported along Okana Road and a partial road closure occurred on Kamehameha Highway between Wailehua Road and Waikane Store.
The wider storm
A slow-moving surface trough, heading east to west, and an upper disturbance triggered heavy showers and isolated thunderstorms that caused flash flooding in some instances. Damages occurred to public and private property, including roads and bridges washed out. Nine homes were destroyed, 44 suffered major damage, and 55 suffered minor damage. No significant injuries were reported.
Began near Kaneohe (21.4180, -157.7938).
Source: NOAA Storm Events Database, event 938605. Narratives are written by the National Weather Service forecast office that issued the report.
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