First Alert Weather Day declared for threat of heavy rain

HONOLULU (HawaiiNewsNow) – Your HNN First Alert Weather Team has declared Friday as a First Alert Weather Day for all islands except Hawaii island due to the threat of heavy showers that could cause flooding.

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The National Weather Service in Honolulu has also issued a Flood Watch for Niihau, Kauai, Oahu, Molokai, Lanai, Maui and Kahoolawe through at least 6 p.m. Friday.

Low pressure system to bring flood threat

An unseasonably cold upper level low pressure system will move in over the islands from the north, producing periods of heavy showers that could cause flooding.

The weather service says the center of the low is forecast to move over Kauai at around noon Friday. It is then expected to weaken and slowly drift eastward.

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Periods of thunderstorms, heavy showers possible

Unstable conditions within the system can produce periods of thunderstorms and heavy showers that could lead to flooding.

Flood-prone roads and other low-lying areas may be closed due to runoff and overflowing streams from the heavy showers. Urban areas could get more property damage due to rapid runoff.

The flood watch may be extended into the overnight hours for parts of the state.

View the latest weather conditions here.

Download the HNN Weather app from the Apple App Store or Google Play for the latest updates from your First Alert Weather Team: chief meteorologist Jennifer Robbins, meteorologist Drew Davis, and weather anchors Guy Hagi, Ben Gutierrez, and Billy V.

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