Small Craft Advisory

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
319 PM HST Mon Aug 18 2025

PHZ119>121-123-124-191600-
/O.CON.PHFO.SC.Y.0036.000000T0000Z-250820T1600Z/
Maalaea Bay-Pailolo Channel-Alenuihaha Channel-
Big Island Leeward Waters-Big Island Southeast Waters-
319 PM HST Mon Aug 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST
WEDNESDAY...

* WHAT...East winds 20 to 25 kt.

* WHERE...Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big
  Island Leeward Waters and Big Island Southeast Waters.

* WHEN...Until 6 AM HST Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

Coastal Flood Statement

Coastal Hazard Message
National Weather Service Honolulu HI
331 PM HST Mon Aug 18 2025

...MINOR COASTAL FLOODING DURING HIGH TIDE THIS WEEK...

Peak monthly high tides combined with water levels that are
running higher than predicted will lead to minor flooding along
the shoreline and in low-lying coastal areas starting as early as
Tuesday afternoon and likely peaking Wednesday and Thursday
afternoons. Coastal flooding is possible around the daily peak
tide, which will be during the afternoon hours.

HIZ001-003-006-007-009-016>018-023-026-029>035-037>054-191445-
/O.NEW.PHFO.CF.S.0004.250819T2200Z-250822T0400Z/
Niihau-Kauai Southwest-Waianae Coast-Oahu North Shore-Olomana-
Kahoolawe-Maui Windward West-Maui Leeward West-Kona-Kohala-
Kauai North-Kauai East-Kauai South-East Honolulu-Honolulu Metro-
Ewa Plain-Koolau Windward-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-
331 PM HST Mon Aug 18 2025

...COASTAL FLOOD STATEMENT IN EFFECT FROM TUESDAY AFTERNOON
THROUGH THURSDAY AFTERNOON...

* WHAT...Isolated minor coastal flooding expected.

* WHERE...Portions of Kahoolawe, Kauai, Lanai, Maui, Molokai,
  Niihau, Oahu and the Big Island.

* WHEN...From Tuesday afternoon through Thursday afternoon.

* IMPACTS...Flooding of beaches that are normally dry, minor
  coastal erosion, and saltwater inundation.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid driving through flooded roadways. If you are forced to
drive through salt water, be sure to rinse your vehicle with
fresh water. Move electronics, vehicles or other valuables to
higher ground. Monitor vessels to ensure mooring lines don`t get
too tight and watch out for overwash around boat ramps. Secure
canoes or other watercraft stowed on beaches.

&&

Submit your coastal flooding photos to the University of Hawaii
Sea Grant College Program`s Hawaii and Pacific Islands King
Tides Project at:

PacificIslandsKingTides.org

$$