Flood Watch issued September 16 at 4:03PM HST until September 18 at 6:00AM HST by NWS Honolulu HI
Remnant moisture from former Tropical Storm Norbert will bring
periods of moderate to heavy showers to the Hawaiian Islands tonight
through Friday morning.
WHAT: Flash flooding caused by excessive rainfall is possible.
WHERE: All main Hawaiian Islands.
WHEN: Through late Thursday night.
IMPACTS: Flood prone roads and other low lying areas may be closed
due to elevated runoff and overflowing streams. Urban areas may
receive more significant flooding and property damage due to rapid
runoff.
ADDITIONAL DETAILS:
- A band of remnant moisture from Norbert will move east across the
islands tonight into Friday, bringing moderate to locally heavy
showers. There is a slight chance of thunderstorms on Thursday as
well, which could produce briefly higher rain rates, increasing
the risk of flash flooding.
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You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.