158
WGHW60 PHFO 070031
FFAHFO
URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE HONOLULU HI
231 PM HST MON APR 6 2026
..FLOOD WATCH FOR ALL ISLANDS IN THE STATE OF HAWAII
HIZ001-003-004-006-007-009>011-015>018-022-023-026>054-071445-
/O.NEW.PHFO.FA.A.0007.260408T1600Z-260411T0400Z/
/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-
231 PM HST MON APR 6 2026
* WHAT...FLASH FLOODING CAUSED BY EXCESSIVE RAINFALL IS POSSIBLE.
* WHERE...KAUAI, NIIHAU, OAHU, MAUI, MOLOKAI, LANAI, KAHOOLAWE, AND
THE BIG ISLAND.
* WHEN...FROM WEDNESDAY MORNING THROUGH FRIDAY AFTERNOON.
* IMPACTS...SIGNIFICANT FLOODING MAY OCCUR DUE TO EXCESSIVE RAINFALL
AND 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...
- A DEEP LAYERED TROUGH WILL DEVELOP WEST OF THE ISLANDS AND
DRAW ABUNDANT MOISTURE NORTHWARD AS IT STRENGTHENS ON
TUESDAY. INSTABILITY AND UPWARD FORCING WILL ENHANCE THE
AVAILABLE MOISTURE AND BRING THE POTENTIAL FOR HEAVY RAIN AND
THUNDERSTORMS LEADING TO FLASH FLOODING ACROSS ALL ISLANDS IN
THE STATE OF HAWAII.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.
FOSTER
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