Apr 13, 2018
A developing upper low northwest of the state, in combination with tropical moisture, induced periods of heavy showers and thunderstorms, and generated historic flash flooding conditions over the Garden Isle of Kauai. An apparent 24-hour rainfall total of 49.69 inches, ending at 1245 HST April 15th, was recorded at an automated rain gauge|in Waipa, Kauai, about a mile west of Hanalei. If this total is certified, it will be a new 24-hour rainfall record for the United States, beating the old re
Source: NOAA National Weather Service Storm Events Database (event 742752). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Honolulu County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.