First Alert Weather Day declared for threat of heavy rain; Oahu under flash flood warning
Hawaii News Now • • nation
Key Points:
- A First Alert Weather Day has been declared for all Hawaiian islands except Hawaii Island due to the threat of heavy showers and potential flooding.
- The National Weather Service has issued a Flood Watch for Oahu, Molokai, Lanai, Maui, and Hawaii Island through 8 a.m. Saturday, with a flash flood warning for Oahu extended until 6:15 p.m.
- Thunderstorms producing heavy rain, with rates up to 2 inches per hour, are impacting areas including the Koolau mountains, central and leeward Oahu, causing road closures and flooding in residential areas.
- An unseasonably cold upper-level low pressure system moving over Kauai is causing unstable weather, with periods of heavy showers and thunderstorms expected to continue, increasing flood risks.
- Flood-prone roads and low-lying areas may remain closed due to runoff and overflowing streams, and the flood watch could be extended overnight for parts of the state.