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Hawaii Island Weather Update for March 17th, 2020

Notice Level: Precautionary (Information Update Needed)

A Flash Flood Watch for Hawaii Island has been extended until Wednesday evening (March 18th). Moderate and Heavy Rains with the possibility of thunderstorms is likely Tuesday evening into Wednesday. (See Post for Further Details)

Published By: HIRSC Team - Hawaii Island (Holualoa) Section and Weather Unit


FLASH FLOOD WATCH NOW IN EFFECT THROUGH WEDNESDAY AFTERNOON... The Flash Flood Watch is now in effect for * Kahoolawe, Kauai, Lanai, Maui, Molokai, Niihau, Oahu and the Big Island. * Through Wednesday afternoon. * A kona low west of the state will continue to produce bands of heavy rain and thunderstorms across portions of the island chain through Wednesday. While all islands could experience flooding rainfall, the greatest risk for flooding will be on Kauai and Oahu, where soils remain saturated due to recent heavy rain. * Heavy rain will likely affect urban and leeward locations, as well as lower elevations, which are more vulnerable to flooding impacts. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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.