587
WGHW60 PHFO 061415
FFAHFO
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Honolulu HI
415 AM HST Sun Sep 6 2026
.Moisture along the eastern flank of Hurricane Lowell will bring
periods of heavy rain to the main Hawaiian Islands late Sunday
through Tuesday.
HIZ006-007-009>011-015>018-022-023-026>028-032>054-070415-
/O.EXT.PHFO.FA.A.0011.260906T2200Z-260909T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
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-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-415 AM HST Sun Sep 6 2026
...FLOOD WATCH NOW IN EFFECT FROM NOON HST TODAY THROUGH TUESDAY
AFTERNOON...
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Maui, Lanai, Molokai, Oahu, The Big Island and Kahoolawe.
* WHEN...From noon HST today 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 Sunday
afternoon 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.
- Maui, Lanai, Molokai, Oahu, The Big Island and Kahoolawe.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
HIZ001-003-004-029>031-070415-
/O.EXT.PHFO.FA.A.0011.260906T2200Z-260909T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Niihau-Kauai Southwest-Kauai Mountains-Kauai North-Kauai East-
Kauai South-415 AM HST Sun Sep 6 2026
...FLOOD WATCH NOW IN EFFECT FROM NOON HST TODAY THROUGH TUESDAY
AFTERNOON...
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Kauai and Niihau.
* WHEN...From noon HST today through Tuesday afternoon.
* IMPACTS...Significant flooding may occur due to the overflow of
streams and drainages. Roads in several areas may be closed, along
with property damage in urban or low lying spots due to runoff.
Landslides may also occur in areas with steep terrain.
* ADDITIONAL DETAILS...
- Moisture along the eastern flank of Hurricane Lowell will bring
periods of heavy rain to the main Hawaiian islands late Sunday
through Tuesday. Initially, the threat of heavy rain will be
highest along windward and mountain areas, then the threat will
spread everywhere as the winds become more southerly by Monday.
- Kauai and Niihau.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$