Severe · Flood WatchActive alert

Flood Watch issued September 6 at 4:15AM HST until September 8 at

Affecting Niihau; Kauai Southwest; Kauai Mountains; Kauai North; Kauai East; Kauai South

In effect until: Sep 7, 2026, 4:15 AM

Niihau; Kauai Southwest; Kauai Mountains; Kauai North; Kauai East; Kauai South

Possible impact zone; conditions develop through 4:15 AM.

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

See it on the live map View official source

Read the original bulletin (official text)

Moisture along the eastern flank of Hurricane Lowell will bring
periods of heavy rain to the main Hawaiian Islands late Sunday
through Tuesday.

* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.

* WHERE...Kauai and Niihau.

* WHEN...From noon HST today through Tuesday afternoon.

* IMPACTS...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.

* ADDITIONAL DETAILS...
- Moisture along the eastern flank of Hurricane Lowell will bring
periods of heavy rain to the main Hawaiian islands late Sunday
through Tuesday. Initially, the threat of heavy rain will be
highest along windward and mountain areas, then the threat will
spread everywhere as the winds become more southerly by Monday.
- Kauai and Niihau.

Free. In your language.

Get the next alert for your area before it matters.

Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Flood Watch issued September 6 at 4:15AM HST until September 8 at

Get the next alert for your area before it matters.

Get alerts in your language