April 17, 2026

…FLASH FLOOD WATCH FOR MAUI FROM 6 PM HST TODAY UNTIL 6 AM HST
WEDNESDAY…

…FLASH FLOOD WATCH FOR THE BIG ISLAND FROM MIDNIGHT UNTIL 6 PM
HST WEDNESDAY…

…FLASH FLOOD WATCH IN EFFECT FROM 6 PM HST THIS EVENING THROUGH
WEDNESDAY AFTERNOON…
The National Weather Service in Honolulu has issued a

  • Flash Flood Watch for the Big Island.

  • From 6 PM HST this evening through Wednesday afternoon.

  • An upper level trough will produce heavy showers and
    thunderstorms along a band of moisture that will slowly move
    down to the Big Island tonight and Wednesday. The main threat
    for flash flooding will be over windward slopes.
    Instructions: 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. Monitor later forecasts and be prepared to take action if a Flash Flood Warning is issued. If you experience heavy rain or rising water, head to higher ground immediately.
    Target Area:
    Big Island Interior
    Big Island North and East
    Kohala
    Kona
    South Big Island

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