April 21, 2026

Hawai’i Island & The State is Still Under Flash Flood Watch Until 6pm Friday

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Flash Flood Watch
Alert:
…FLASH FLOOD WATCH FOR ALL ISLANDS UNTIL 6 PM FRIDAY…

…FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON…
The Flash Flood Watch continues for

* Niihau, Kauai, Oahu, Molokai, Lanai, Maui, Kahoolawe and the Big
Island.

* Through Friday afternoon

* A low west of Kauai will keep the atmosphere moist and
unstable, maintaining the potential for locally heavy
rainfall.

* Significant flooding may occur due to the overflow of streams
and drainages. Roads in several areas may be closed, along
with property damage in urban or low lying spots due to
runoff. Landslides may also occur in areas with steep terrain.
Instructions: Be prepared to take action if a Flash Flood Warning is issued. If you experience heavy rain or rising waters, head to higher ground immediately. A Flash Flood Watch means that conditions are favorable for flash flooding. Flash Flooding is LIFE THREATENING. Do not cross fast flowing water in your vehicle or on foot.
Target Area:
Big Island Interior
Big Island North and East
Big Island Summit
Central Oahu
Haleakala Summit
Kahoolawe
Kauai Leeward
Kauai Mountains
Kauai Windward
Kohala
Kona
Lanai Makai
Lanai Mauka
Leeward Haleakala
Maui Central Valley
Maui Leeward West
Maui Windward West
Molokai Leeward
Molokai Windward
Niihau
Oahu Koolau
Oahu North Shore
Oahu South Shore
Olomana
South Big Island
Waianae Coast
Waianae Mountains
Windward Haleakala

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