Flash Flood — Maui, Hawaii

2022-05-01 to 2022-05-02 · near Makena, Maui, Hawaii

Event narrative

Piilani Highway between mile markers 31 and 39 became impassable after heavy rain, and a culvert was washed out at the Lelekea Culvert crossing.

Wider weather episode

An upper air disturbance caused heavy showers and isolated thunderstorms. Early on in the episode, a flash flood occurred over a portion of Maui along Piilani Highway. Otherwise, the precipitation produced small stream and drainage ditch flooding, and ponding on roadways, over other parts of Maui and on the Big Island. No serious injuries were reported.

View location on OpenStreetMap → (20.6211, -156.3595)

Source: NOAA Storm Events Database, event_id 1018140. Narrative written by the NWS forecast office that issued the report.