781 WGHW50 PHFO 202305 FFWHFO HIC003-212315- /O.EXT.PHFO.FF.W.0018.000000T0000Z-260321T2315Z/ /00000.U.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Honolulu HI 105 PM HST Fri Mar 20 2026 The National Weather Service in Honolulu has extended the * Flash Flood Warning for... A Dam Failure on the Kaukonahua Stream below Wahiawa Dam on... The island of Oahu in Honolulu County * Until 115 PM HST Saturday. * At 105 PM HST, emergency management reported the imminent failure of Wahiawa Dam. HAZARD...Flash flooding from the imminent failure of Wahiawa Dam. SOURCE...Emergency management. IMPACT...Flooding of areas downstream from the Wahiawa Dam along the Kaukonahua Stream. * The nearest downstream area from the dam is Waialua, Haleiwa, and Kaukonahua Stream. This includes the following streams and drainages... Poamoho Stm- Dole Fields, Poamoho Stm- Kaukonahua Hwy, Kaukonahua Stm- Schofield, Mohiakea Gul, Waialua Town, Kaukonahua Stm- N Fork Wahiawa, Kaukonahua Stm- Wahiawa, Kiikii Stm- Waialua, Helemano/Opaeula Stm- Haleiwa, Kaukonahua Stm- Waialua and Anahulu R- Haleiwa. Flooding is occurring along the Kaukonahua Stream. This warning may need to be extended beyond 115 PM HST Saturday if flooding persists. && LAT...LON 2159 15812 2160 15811 2161 15810 2151 15804 2149 15805 2158 15814 2159 15813 FLASH FLOOD...OBSERVED DAM FAILURE...IMMINENT $$ TS  968 WGHW50 PHFO 202331 FFWHFO HIC003-210300- /O.EXT.PHFO.FF.W.0017.000000T0000Z-260321T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Honolulu HI 131 PM HST Fri Mar 20 2026 ...FLASH FLOOD EMERGENCY FOR NORTHERN OAHU... The National Weather Service in Honolulu has extended the * Flash Flood Warning for... The island of Oahu in Honolulu County * Until 500 PM HST. * At 131 PM HST, emergency management reported ongoing flood impacts in the North Shore areas. The Wahiawa Reservoir and area streams remain elevated as well. Additional areas of heavy rain are expected over the next few hours which could exacerbate existing flooding and cause additional rises in stream and reservoir water levels. This is a FLASH FLOOD EMERGENCY for Northern Oahu. This is a PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER GROUND NOW! HAZARD...Heavy rain producing life threatening flash flooding. SOURCE...Emergency management. IMPACT...Severe flooding in drainages, streams, rivers, roads, properties, and other low lying areas. Numerous public road closures in effect, as well as landslides in steep terrain. Significant property damage is ongoing for homes and other properties in low lying areas and is likely to continue with additional heavy rain. * Some locations that will experience flash flooding include... northern half of Oahu, along and north of a line from Waianae Valley to Mililani Mauka to Waiahole. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to higher ground now! This is an extremely dangerous and life-threatening situation. Do not attempt to travel unless you are fleeing an area subject to flooding or under an evacuation order. Stay away from streams, rivers, drainage ditches, and culverts, even if they are currently dry. The heavy rains may cause rock and mudslides in steep terrain areas. && This warning may need to be extended beyond 500 PM HST if flooding persists. LAT...LON 2148 15824 2153 15825 2157 15829 2158 15829 2159 15828 2160 15813 2169 15805 2173 15798 2155 15783 2150 15783 2140 15818 FLASH FLOOD...OBSERVED FLASH FLOOD DAMAGE THREAT...CATASTROPHIC $$ TS  464 WHUS51 KLWX 202339 SMWLWX ANZ534-542-543-210045- /O.NEW.KLWX.MA.W.0019.260320T2339Z-260321T0045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Baltimore MD/Washington DC 739 PM EDT Fri Mar 20 2026 The National Weather Service in Sterling Virginia has issued a * Special Marine Warning for... Chesapeake Bay from Drum Point MD to Smith Point VA... Patuxent River to Broomes Island MD... Tangier Sound and the inland waters surrounding Bloodsworth Island... * Until 845 PM EDT. * At 739 PM EDT, gust fronts were located along a line extending from near Chesapeake Beach to Breton Bay, moving east at 50 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Buoy. IMPACT...Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. * Locations impacted include... Greenwell State Park, Hooper Island Light, Smith Island, Crisfield, Deep Hole, Mouth Of The Potomac River, Nanticoke River Mouth, Southwest Middle Grounds, Deal Island, Ewell, Cuckold Creek, Point Lookout, Tangier Sound, Drum Point, Point No Point, Honga River, Fishing Bay, The Targets, Richland Point Buoy, and Bivalve. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. && LAT...LON 3811 7644 3807 7633 3829 7640 3839 7658 3836 7639 3832 7642 3836 7618 3822 7604 3836 7601 3831 7602 3823 7597 3836 7586 3826 7592 3823 7582 3818 7595 3806 7578 3806 7580 3790 7590 3789 7624 TIME...MOT...LOC 2339Z 285DEG 49KT 3866 7646 3820 7670 HAIL...0.00IN WIND...>34KTS $$ DHOF  154 FZUS71 KLWX 202340 MWSLWX Marine Weather Statement National Weather Service Baltimore MD/Washington DC 740 PM EDT Fri Mar 20 2026 ANZ536-537-210030- /O.CON.KLWX.MA.W.0017.000000T0000Z-260321T0030Z/ 740 PM EDT Fri Mar 20 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 830 PM EDT... For the following areas... Tidal Potomac from Cobb Island MD to Smith Point VA... Tidal Potomac from Indian Head to Cobb Island MD... At 739 PM EDT, showers were located along a line extending from 8 nm west of Chesapeake Beach to 9 nm northeast of Popes Creek to near Colonial Beach, moving east at 15 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Observed wind. IMPACT...Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. Locations impacted include... Yeocomico River, Potomac Creek, Breton Bay, Westmoreland State Park, Nanjemoy Creek, Quantico, Swan Point, Coltons Point, Gunston Hall, Coles Point, Saint George Island, Occoquan Bay, Popes Creek, Saint Clements Bay, Piney Point, Mouth Of The Potomac River, Maryland Point, Port Tobacco River, Leesylvania State Park, and Cobb Island. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. && LAT...LON 3850 7733 3866 7724 3865 7716 3870 7720 3863 7709 3851 7724 3839 7723 3846 7701 3835 7696 3827 7684 3823 7658 3814 7651 3809 7638 3793 7627 3803 7651 3815 7661 3816 7684 3820 7693 3838 7706 3833 7729 TIME...MOT...LOC 2339Z 270DEG 17KT 3866 7672 3846 7681 3826 7691 HAIL...0.00IN WIND...>34KTS $$ DHOF  565 FZUS71 KLWX 202340 RRA MWSLWX Marine Weather Statement National Weather Service Baltimore MD/Washington DC 740 PM EDT Fri Mar 20 2026 ANZ530>533-538>541-210030- /O.CON.KLWX.MA.W.0018.000000T0000Z-260321T0030Z/ 740 PM EDT Fri Mar 20 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 830 PM EDT... For the following areas... Chesapeake Bay from North Beach to Drum Point MD... Chesapeake Bay from Pooles Island to Sandy Point MD... Chesapeake Bay from Sandy Point to North Beach MD... Chesapeake Bay north of Pooles Island MD... Chester River to Queenstown MD... Choptank River to Cambridge MD and the Little Choptank River... Eastern Bay... Patapsco River including Baltimore Harbor... At 740 PM EDT, strong thunderstorms were located along a line extending from 11 nm northeast of Chester River to near Miles River to near Choptank River, moving east at 20 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Observed wind. IMPACT...Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. Locations impacted include... Choptank River, Kent Narrows Bridge, North Point State Park, Magothy River, Rock Hall, Chester River, Eastern Bay, Dobbins Island, Blackwalnut Point, Pooles Island, Herring Bay, Sandy Point State Park, Northeast River, Bloody Point Light, Thomas Point Light, Calvert Cliffs, Poplar Island, Parsons Island, Fort Smallwood State Park, and Pinehurst. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. && LAT...LON 3945 7601 3946 7586 3945 7586 3939 7604 3936 7588 3932 7618 3879 7619 3885 7627 3875 7634 3859 7605 3861 7627 3836 7625 3832 7642 3870 7655 3902 7641 3926 7665 3923 7643 3945 7628 3936 7625 3960 7595 TIME...MOT...LOC 2340Z 261DEG 21KT 3908 7599 3883 7614 3861 7628 HAIL...0.00IN WIND...>34KTS $$ DHOF