573 

WHHW50 PHFO 210425

SMWHFO

PHZ115>117-210630-

/O.NEW.PHFO.MA.W.0050.260321T0425Z-260321T0630Z/



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Special Marine Warning

National Weather Service Honolulu HI

625 PM HST Fri Mar 20 2026



The National Weather Service in Honolulu has issued a



* Special Marine Warning for...

  Kaiwi Channel...

  Maui County Windward Waters...

  Oahu Leeward Waters...



* Until 830 PM HST.



* At 624 PM HST, a strong thunderstorm was located near Hanauma Bay,

  moving northeast at 20 knots.



  HAZARD...Wind gusts 34 knots or greater.



  SOURCE...Radar.



  IMPACT...Small craft could be damaged in briefly higher winds and 

           suddenly higher waves.



* Locations impacted include...

  FAD Buoy T, FAD Buoy O, FAD Buoy HH, FAD Buoy N, and Ilio Point.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Prepare for gusty winds, steep and fast-building seas, and blinding

downpours. Stay low or go below, and make sure all on board are

wearing life jackets.



&&



LAT...LON 2180 15651 2161 15622 2153 15593 2117 15679

      2117 15691 2122 15698 2119 15707 2122 15724

      2104 15736 2086 15757 2076 15786 2113 15815

      2131 15789 2126 15782 2129 15770 2126 15770

      2163 15733 2171 15715 2183 15713 2189 15706

TIME...MOT...LOC 0424Z 241DEG 20KT 2118 15772 



HAIL...0.00IN

WIND...>34KTS



$$



Kino






661 

WGHW70 PHFO 210449

FFSHFO



Flash Flood Statement

National Weather Service Honolulu HI

649 PM HST Fri Mar 20 2026



HIC003-210700-

/O.CON.PHFO.FF.W.0019.000000T0000Z-260321T0700Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

Honolulu HI-

649 PM HST Fri Mar 20 2026



...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 9 PM HST THIS EVENING 

FOR THE ISLAND OF OAHU IN HONOLULU COUNTY...



At 649 PM HST, radar indicated moderate to locally heavy rain over 

parts of leeward and east Oahu. Rain was falling at a rate of 0.5 to 

1.5 inches per hour. Additional bands of moderate to locally heavy 

showers will be possible through tonight. Flash Flooding is ongoing, 

or is expected to begin shortly.



HAZARD...Flash flooding caused by heavy rain.



SOURCE...Radar.



IMPACT...Flooding in drainages, streams, rivers, roads,

         properties, and other low-lying areas. Public road

         closures possible in some areas. Landslides are possible

         in steep terrain.



Some locations that will experience flash flooding include...

  Honolulu, Waipio, Moanalua, Halawa, Salt Lake, Aiea, Kalihi, Pearl 

  City, Ahuimanu, Iroquois Point, Manoa, Kahaluu, Kaneohe, Waiahole, 

  Waipahu, Waikele, Palolo, Maunawili, Waikane and Ewa Beach.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Stay away from streams, rivers, drainage ditches, and culverts, even 

if they are currently dry.



Excessive runoff from heavy rainfall will cause flooding of drainage 

ditches and streams, streets, highways, properties, and other low 

lying spots.



&&



LAT...LON 2147 15783 2143 15779 2144 15778 2147 15779

      2147 15772 2146 15771 2141 15773 2134 15769

      2131 15764 2126 15769 2125 15772 2127 15773

      2125 15783 2129 15787 2130 15790 2129 15796

      2131 15797 2129 15811 2140 15818 2150 15783



FLASH FLOOD...RADAR INDICATED



$$



KINO