Feb 28, 2017
The combination of a nearby surface low and upper trough brought heavy showers and thunderstorms to parts of the Aloha State, mainly Kauai, Oahu, and Maui. Some of the rainfall was enough to cause flash flooding in a few instances. However, there were no reports of serious injuries. The total cost of damages was not known, but a report about flooding at Waimea Valley Park on Oahu on the 28th indicated damages in the $10's of thousands.
Source: NOAA National Weather Service Storm Events Database (event 674324). 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.