234 

WHHW50 PHFO 211811

SMWHFO

PHZ116>121-211915-

/O.NEW.PHFO.MA.W.0057.260321T1811Z-260321T1915Z/



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Special Marine Warning

National Weather Service Honolulu HI

811 AM HST Sat Mar 21 2026



The National Weather Service in Honolulu has issued a



* Special Marine Warning for...

  Alenuihaha Channel...

  Kaiwi Channel...

  Maalaea Bay...

  Maui County Leeward Waters...

  Maui County Windward Waters...

  Pailolo Channel...



* Until 915 AM HST.



* At 810 AM HST, a broad line of thunderstorms extends across waters 

  around Maui, Molokai, and Lanai. Individual thunderstorms in this 

  area were moving north to 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...

  Laau Point, Kalaupapa, Cape Halawa, Shipwreck Beach, Ilio Point,

  FAD Buoy K, Kahului Harbor, and FAD Buoy O.



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.



Frequent lightning is occurring with these storms. If caught on the 

open water, stay below deck if possible.



&&



LAT...LON 2180 15651 2161 15622 2156 15601 2139 15570

      2092 15623 2095 15633 2090 15648 2100 15655

      2103 15664 2095 15670 2086 15668 2078 15655

      2080 15649 2073 15645 2009 15719 2034 15751

      2052 15762 2063 15789 2185 15669

TIME...MOT...LOC 1810Z 235DEG 13KT 2081 15721 



HAIL...0.00IN

WIND...>34KTS



$$



Wroe






629 

WGHW70 PHFO 211840

FFSHFO



Flash Flood Statement

National Weather Service Honolulu HI

840 AM HST Sat Mar 21 2026



HIC003-212100-

/O.CON.PHFO.FF.W.0021.000000T0000Z-260321T2100Z/

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

Honolulu HI-

840 AM HST Sat Mar 21 2026



...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 11 AM HST THIS 

MORNING FOR THE ISLAND OF OAHU IN HONOLULU COUNTY...



At 840 AM HST, emergency management continued to report road 

closures across Oahu due to recent flooding, and the Wahiawa 

Reservoir remains elevated. While the heaviest bands of showers have 

moved east of Oahu, additional showers with rain rates of 0.5 to 1 

inch per hour will be moving over the island from the south and west 

this morning.





HAZARD...Flash flooding caused by heavy rain.



SOURCE...Emergency management.



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...

the entire Island of Oahu.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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

if they are currently dry.



Do not cross fast flowing or rising water in your vehicle, or on 

foot. Turn around, don't drown.



&&



LAT...LON 2125 15769 2125 15772 2127 15773 2124 15782

      2130 15790 2129 15811 2136 15815 2148 15824

      2153 15825 2158 15829 2160 15813 2169 15805

      2173 15798 2155 15783 2147 15783 2143 15779

      2147 15779 2147 15772 2141 15773 2131 15764



FLASH FLOOD...OBSERVED



$$



WROE