Molokaʻi spent Sunday under a Flash Flood Warning that was set to remain in effect through 6 p.m. HST on April 12, 2026, according to the National Weather Service in Honolulu. Officials warned that sudden, life‑threatening runoff could quickly inundate streams, culverts and low‑lying roads and urged residents to stay away from areas that are known to flood.
The @NWSHonolulu has issued a Flash Flood Warning for Moloka‘i until 6:00 pm HST (4/12). More info here: https://t.co/imrXL9JFAL https://t.co/Tk9poG1TmF
— Hawaii EMA (@Hawaii_EMA) April 13, 2026
What the warning covered
The National Weather Service in Honolulu said the alert applied to all forecast zones on Molokaʻi and warned that heavy downpours could trigger rapid rises in streams, flooded roadways and possible landslides, especially in drainages and gulches. Forecasters said a Kona low pulling tropical moisture northward kept the flood threat elevated across the islands.
County response and local impacts
Maui County and emergency partners opened temporary shelter space while public‑safety teams watched stream levels and cleared debris as conditions changed, Hawaii News Now reported. County officials also urged residents on Maui and Molokaʻi to conserve water and sign up for local alerts while response crews remained on standby.
Why Molokaʻi is especially at risk
Officials said soils and stream channels across Maui County are still saturated from a series of Kona lows in March that produced record rainfall at higher elevations, which increases the odds that even brief bursts of heavy rain will cause flash flooding, according to the Maui County news office. Hoodline earlier covered a related advisory for the island in its earlier advisory coverage. That recent run of storms means runoff can be rapid and roads such as Kamehameha V Highway have been hazardous during past events.
How to stay safe
The Hawaiʻi Emergency Management Agency reposted the National Weather Service alert and reminded residents that social accounts are not monitored around the clock and that 9‑1‑1 remains the number to call for emergencies, Hawaiʻi Emergency Management Agency. Residents are advised to avoid driving through floodwater, move to higher ground if flooding threatens and sign up for Genasys Protect and county alerts for official instructions.
For the latest forecasts and any new warnings, residents are urged to monitor updates from the National Weather Service in Honolulu and local emergency pages.
