iNWS Alert

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

HIZ001-003-004-006-007-009>011-015>018-022-023-026>054-061545-
/O.NEW.PHFO.FA.A.0011.260907T0400Z-260909T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Niihau-Kauai Southwest-Kauai Mountains-Waianae Coast-Oahu North
Shore-Olomana-Central Oahu-Waianae Mountains-Lanai Mauka-
Kahoolawe-Maui Windward West-Maui Leeward West-Haleakala Summit-
Kona-Kohala-Big Island Interior-Big Island Summits-Kauai North-
Kauai East-Kauai South-East Honolulu-Honolulu Metro-Ewa Plain-
Koolau Windward-Koolau Leeward-Molokai Windward-Molokai Southeast-
Molokai North-Molokai West-Molokai Leeward South-Lanai Windward-
Lanai Leeward-Lanai South-Maui Central Valley North-Maui Central
Valley South-Windward Haleakala-Kipahulu-South Maui/Upcountry-
South Haleakala-Big Island South-Big Island Southeast-Big Island
East-Big Island North-
344 PM HST Sat Sep 5 2026

...FLOOD WATCH IN EFFECT FROM SUNDAY EVENING THROUGH TUESDAY
AFTERNOON...

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...All main Hawaiian Islands.

* WHEN...From Sunday evening through Tuesday afternoon.

* 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...
- 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.
- The entire state.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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