633 WHUS51 KLWX 202234 SMWLWX ANZ536-537-210030- /O.NEW.KLWX.MA.W.0017.260320T2234Z-260321T0030Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Baltimore MD/Washington DC 634 PM EDT Fri Mar 20 2026 The National Weather Service in Sterling Virginia has issued a * Special Marine Warning for... Tidal Potomac from Cobb Island MD to Smith Point VA... Tidal Potomac from Indian Head to Cobb Island MD... * Until 830 PM EDT. * At 634 PM EDT, gust fronts were located along a line extending from Fort Hunt to Smallwood State Park to Fairview Beach, moving east at 15 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... 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 2234Z 285DEG 17KT 3874 7708 3854 7717 3834 7727 HAIL...0.00IN WIND...>34KTS $$ DHOF  377 WHUS51 KLWX 202236 SMWLWX ANZ530>533-538>541-210030- /O.NEW.KLWX.MA.W.0018.260320T2236Z-260321T0030Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Baltimore MD/Washington DC 636 PM EDT Fri Mar 20 2026 The National Weather Service in Sterling Virginia has issued a * Special Marine Warning for... Chesapeake Bay from North Beach to Drum Point MD... Chesapeake Bay from Pooles Island to Sandy Point MD... Chesapeake Bay from Sandy Point to North Beach MD... Chesapeake Bay north of Pooles Island MD... Chester River to Queenstown MD... Choptank River to Cambridge MD and the Little Choptank River... Eastern Bay... Patapsco River including Baltimore Harbor... * Until 830 PM EDT. * At 636 PM EDT, strong thunderstorms were located along a line extending from Magothy River to Deale to 11 nm southwest of Chesapeake Beach, moving east at 20 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Buoy. IMPACT...Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. * Locations impacted include... Choptank River, Kent Narrows Bridge, North Point State Park, Magothy River, Rock Hall, Chester River, Eastern Bay, Dobbins Island, Blackwalnut Point, Pooles Island, Herring Bay, Sandy Point State Park, Northeast River, Bloody Point Light, Thomas Point Light, Calvert Cliffs, Poplar Island, Parsons Island, Fort Smallwood State Park, and Pinehurst. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. && LAT...LON 3945 7601 3946 7586 3945 7586 3939 7604 3936 7588 3932 7618 3879 7619 3885 7627 3875 7634 3859 7605 3861 7627 3836 7625 3832 7642 3870 7655 3902 7641 3926 7665 3923 7643 3945 7628 3936 7625 3960 7595 TIME...MOT...LOC 2236Z 261DEG 21KT 3903 7644 3878 7658 3856 7672 HAIL...0.00IN WIND...>34KTS $$ DHOF  752 WGHW50 PHFO 202255 FFWHFO HIC003-210200- /O.EXT.PHFO.FF.W.0019.000000T0000Z-260321T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Honolulu HI 1255 PM HST Fri Mar 20 2026 The National Weather Service in Honolulu has extended the * Flash Flood Warning for... The island of Oahu in Honolulu County * Until 400 PM HST. * At 1255 PM HST, radar indicated heavy rain continuing to move over east Oahu. Rain was generally falling at a rate of 1 to 2 inches per hour. Due to elevated stream levels, lingering rain, and the potential for additional heavy showers moving in, the warning will be extended. 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. && This warning may need to be extended beyond 400 PM HST if flooding persists. 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 $$ TS