741 FZUS71 KLWX 212020 MWSLWX Marine Weather Statement National Weather Service Baltimore MD/Washington DC 420 PM EDT Tue Jul 21 2026 ANZ536-537-212130- /O.CON.KLWX.MA.W.0156.000000T0000Z-260721T2130Z/ 420 PM EDT Tue Jul 21 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 530 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 420 PM EDT, strong thunderstorms were located along a line extending from near Nomini Bay to near Yeocomico River to near Northern Neck Reef, moving east at 40 knots. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar indicated. IMPACT...Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. Locations impacted include... Breton Bay, Saint Clements Bay, Piney Point, Mouth Of The Potomac River, Maryland Point, Nanjemoy Creek, Port Tobacco River, Point Lookout, Tall Timbers, Cobb Island, Swan Point, Coltons Point, Nomini Bay, Coles Point, Mathias Point, U.S. 301 Nice Memorial Bridge, Saint George Island, Wicomico River, White Point Beach, and Popes Creek. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 3815 7661 3816 7684 3821 7694 3826 7696 3830 7703 3838 7706 3833 7729 3840 7723 3839 7723 3846 7701 3835 7696 3827 7684 3823 7658 3814 7651 3807 7633 3791 7627 TIME...MOT...LOC 2020Z 249DEG 39KT 3810 7669 3800 7649 3780 7626 HAIL...<.75IN WIND...>34KTS $$ BJL 803 FZUS71 KLWX 212021 MWSLWX Marine Weather Statement National Weather Service Baltimore MD/Washington DC 421 PM EDT Tue Jul 21 2026 ANZ534-543-212115- /O.CON.KLWX.MA.W.0158.000000T0000Z-260721T2115Z/ 421 PM EDT Tue Jul 21 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 515 PM EDT... For the following areas... Chesapeake Bay from Drum Point MD to Smith Point VA... Tangier Sound and the inland waters surrounding Bloodsworth Island... At 421 PM EDT, strong thunderstorms were located along a line extending from near Smith Island to near Deep Hole to Saint Inigoes Creek, moving east at 35 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. Locations impacted include... Hooper Island Light, Smith Island, Deep Hole, Nanticoke River Mouth, Southwest Middle Grounds, Ewell, Tangier Sound, Honga River, Point No Point, Bivalve, The Targets, Richland Point Buoy, and Deal Island. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. && LAT...LON 3822 7640 3831 7616 3822 7603 3837 7600 3823 7597 3836 7586 3826 7592 3823 7589 3823 7582 3819 7594 3814 7596 3814 7579 3806 7587 3806 7581 3807 7578 3802 7584 3803 7587 3790 7591 3789 7624 TIME...MOT...LOC 2021Z 252DEG 36KT 3796 7596 3807 7619 3811 7641 HAIL...0.00IN WIND...>34KTS $$ BJL 463 FZUS71 KLWX 212023 MWSLWX Marine Weather Statement National Weather Service Baltimore MD/Washington DC 423 PM EDT Tue Jul 21 2026 ANZ535-536-212115- /O.CON.KLWX.MA.W.0157.000000T0000Z-260721T2115Z/ 423 PM EDT Tue Jul 21 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 515 PM EDT... For the following areas... Tidal Potomac from Indian Head to Cobb Island MD... Tidal Potomac from Key Bridge to Indian Head MD... At 422 PM EDT, a strong thunderstorm and gust front was located over Fort Washington, moving northeast at 30 knots. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar indicated. IMPACT...Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. Locations impacted include... Potomac Creek, Widewater, Leesylvania State Park, National Harbor, Smallwood State Park, Quantico, Fort Washington, Tidal Basin, Reagan National Airport, Gunston Hall, Mason Neck State Park, Woodrow Wilson Bridge, Indian Head, Key Bridge, Occoquan Bay, Fort Hunt, Brent Point, and Alexandria. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 3850 7733 3867 7724 3866 7719 3864 7720 3865 7716 3869 7720 3873 7706 3890 7708 3891 7705 3885 7700 3871 7700 3869 7701 3867 7708 3862 7709 3851 7724 3840 7723 3833 7729 3841 7733 TIME...MOT...LOC 2022Z 238DEG 28KT 3869 7703 HAIL...<.75IN WIND...>34KTS $$ BJL 237 FZUS74 KLIX 212031 MWSLIX Marine Weather Statement National Weather Service New Orleans LA 331 PM CDT Tue Jul 21 2026 GMZ529-212100- 331 PM CDT Tue Jul 21 2026 ...A STRONG THUNDERSTORM OVER THE WATERS... The areas affected include... Lake Maurepas... At 331 PM CDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots. This thunderstorm was located over Lake Maurepas, moving southeast at 15 knots. Mariners can expect gusty winds to around 30 knots, locally higher waves, and dangerous lightning strikes. Boaters should seek safe harbor immediately until this activity passes. && LAT...LON 3027 9037 3024 9040 3017 9046 3017 9052 3030 9056 3034 9047 $$ Zeringue 141 FZUS71 KLWX 212038 MWSLWX Marine Weather Statement National Weather Service Baltimore MD/Washington DC 438 PM EDT Tue Jul 21 2026 ANZ536-212048- /O.CAN.KLWX.MA.W.0156.000000T0000Z-260721T2130Z/ 438 PM EDT Tue Jul 21 2026 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Tidal Potomac from Indian Head to Cobb Island MD... The thunderstorms have moved out of the warned area and no longer pose a significant threat to boaters. A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for southern Maryland...and the adjacent coastal waters. && LAT...LON 3815 7661 3817 7679 3825 7674 3823 7658 3814 7651 3807 7633 3791 7627 TIME...MOT...LOC 2038Z 245DEG 32KT 3815 7654 3805 7634 3785 7611 $$ ANZ537-212130- /O.CON.KLWX.MA.W.0156.000000T0000Z-260721T2130Z/ 438 PM EDT Tue Jul 21 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 530 PM EDT... For the following areas... Tidal Potomac from Cobb Island MD to Smith Point VA... At 438 PM EDT, strong thunderstorms were located along a line extending from Tall Timbers to near Mouth Of The Potomac River to near Northern Neck Reef, moving northeast at 30 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. Locations impacted include... Breton Bay, Point Lookout, Tall Timbers, Coltons Point, Saint Clements Bay, Nomini Bay, Coles Point, Piney Point, Mouth Of The Potomac River, Saint George Island, and White Point Beach. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 3815 7661 3817 7679 3825 7674 3823 7658 3814 7651 3807 7633 3791 7627 TIME...MOT...LOC 2038Z 245DEG 32KT 3815 7654 3805 7634 3785 7611 HAIL...0.00IN WIND...>34KTS $$ CJL 147 FZUS71 KLWX 212041 MWSLWX Marine Weather Statement National Weather Service Baltimore MD/Washington DC 441 PM EDT Tue Jul 21 2026 ANZ536-212051- /O.CAN.KLWX.MA.W.0157.000000T0000Z-260721T2115Z/ 441 PM EDT Tue Jul 21 2026 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Tidal Potomac from Indian Head to Cobb Island MD... The front has moved out of the warned area and no longer poses a significant threat to boaters. A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for District of Columbia...southern and central Maryland...northern Virginia...and the adjacent coastal waters. && LAT...LON 3873 7706 3890 7708 3891 7705 3885 7700 3871 7700 3869 7701 3868 7708 TIME...MOT...LOC 2041Z 216DEG 23KT 3888 7726 3890 7702 3887 7687 $$ ANZ535-212115- /O.CON.KLWX.MA.W.0157.000000T0000Z-260721T2115Z/ 441 PM EDT Tue Jul 21 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 515 PM EDT... For the following areas... Tidal Potomac from Key Bridge to Indian Head MD... At 441 PM EDT, a front was located along a line extending from 8 nm northwest of Alexandria to Tidal Basin to 8 nm east of Reagan National Airport, moving northeast at 25 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. Locations impacted include... Tidal Basin, Fort Washington, Reagan National Airport, Woodrow Wilson Bridge, Key Bridge, Fort Hunt, National Harbor, and Alexandria. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. && LAT...LON 3873 7706 3890 7708 3891 7705 3885 7700 3871 7700 3869 7701 3868 7708 TIME...MOT...LOC 2041Z 216DEG 23KT 3888 7726 3890 7702 3887 7687 HAIL...0.00IN WIND...>34KTS $$ CJL 277 FZUS74 KLIX 212050 MWSLIX Marine Weather Statement National Weather Service New Orleans LA 350 PM CDT Tue Jul 21 2026 GMZ541-212100- /O.CAN.KLIX.MA.W.0285.000000T0000Z-260721T2115Z/ 350 PM CDT Tue Jul 21 2026 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Terrebonne Bay... The thunderstorm has moved out of the area and no longer poses a significant threat to boaters. && LAT...LON 2915 9102 2885 9068 2851 9071 2860 9127 2862 9126 2868 9126 TIME...MOT...LOC 2050Z 341DEG 27KT 2883 9078 $$ GMZ551-570-212115- /O.CON.KLIX.MA.W.0285.000000T0000Z-260721T2115Z/ 350 PM CDT Tue Jul 21 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 415 PM CDT... For the following areas... Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm... Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM... At 350 PM CDT, a severe thunderstorm capable of producing waterspouts was located 13 nm south of Isle Derniers, moving south at 25 knots. HAZARD...Waterspouts, wind gusts to 40 knots, and small hail. SOURCE...Radar indicated. IMPACT...Waterspouts can quickly form and capsize boats...damage vessels and oil rigs...and create suddenly higher waves. Small craft could be damaged in briefly higher winds and suddenly higher waves. The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds will be dangerous for boaters or anyone near the water. Boaters should avoid waterspouts and never try to navigate near them. Make sure all on board are wearing life jackets. Seek shelter or move to safe harbor until hazardous weather passes. && LAT...LON 2915 9102 2885 9068 2851 9071 2860 9127 2862 9126 2868 9126 TIME...MOT...LOC 2050Z 341DEG 27KT 2883 9078 WATERSPOUT...POSSIBLE HAIL...<.75IN WIND...40KTS $$ Zeringue 811 FZUS74 KLIX 212050 RRA MWSLIX Marine Weather Statement National Weather Service New Orleans LA 350 PM CDT Tue Jul 21 2026 GMZ551-570-212200- /O.CON.KLIX.MA.W.0286.000000T0000Z-260721T2200Z/ 350 PM CDT Tue Jul 21 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 500 PM CDT... For the following areas... Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm... Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM... At 350 PM CDT, a severe thunderstorm capable of producing waterspouts was located 7 nm south of Point Au Fer Island, moving southwest at 15 knots. HAZARD...Waterspouts and wind gusts to 40 knots. SOURCE...Radar indicated. IMPACT...Waterspouts can quickly form and capsize boats...damage vessels and oil rigs...and create suddenly higher waves. Small craft could be damaged in briefly higher winds and suddenly higher waves. The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds will be dangerous for boaters or anyone near the water. Boaters should avoid waterspouts and never try to navigate near them. Make sure all on board are wearing life jackets. Seek shelter or move to safe harbor until hazardous weather passes. && LAT...LON 2922 9126 2927 9123 2926 9119 2915 9102 2904 9107 2878 9123 2879 9126 TIME...MOT...LOC 2050Z 027DEG 14KT 2918 9118 WATERSPOUT...POSSIBLE HAIL...0.00IN WIND...40KTS $$ Zeringue 174 FZUS71 KPHI 212051 MWSPHI Marine Weather Statement National Weather Service Mount Holly NJ 451 PM EDT Tue Jul 21 2026 ANZ485-212100- /O.CON.KPHI.MA.W.0102.000000T0000Z-260721T2100Z/ 451 PM EDT Tue Jul 21 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 500 PM EDT... For the following areas... Waters from Cape May NJ to Fenwick Island DE from 20 to 60 NM... At 451 PM EDT, a severe thunderstorm capable of producing waterspouts was located 22 nm east of Chicken Bone, moving east at 35 knots. HAZARD...Waterspouts, wind gusts to 40 knots, and large hail. SOURCE...Radar indicated. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 3838 7413 3854 7365 3808 7386 3820 7422 TIME...MOT...LOC 2051Z 255DEG 33KT 3824 7397 WATERSPOUT...POSSIBLE HAIL...>.75IN WIND...40KTS $$ Staarmann 131 FZUS71 KLWX 212054 MWSLWX Marine Weather Statement National Weather Service Baltimore MD/Washington DC 454 PM EDT Tue Jul 21 2026 ANZ535-212104- /O.CAN.KLWX.MA.W.0157.000000T0000Z-260721T2115Z/ 454 PM EDT Tue Jul 21 2026 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Tidal Potomac from Key Bridge to Indian Head MD... The front has moved out of the area and no longer poses a significant threat to boaters. A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for District of Columbia...southern and central Maryland...northern Virginia...and the adjacent coastal waters. && LAT...LON 3873 7706 3890 7708 3891 7705 3885 7700 3871 7700 3869 7701 3868 7708 TIME...MOT...LOC 2051Z 221DEG 13KT 3891 7723 3893 7699 3890 7684 $$ CJL 333 FZUS71 KOKX 212055 MWSOKX Marine Weather Statement National Weather Service New York NY 455 PM EDT Tue Jul 21 2026 ANZ338-345-353-355-212104- /O.EXP.KOKX.MA.W.0067.000000T0000Z-260721T2100Z/ 455 PM EDT Tue Jul 21 2026 ...THE SPECIAL MARINE WARNING WILL EXPIRE AT 500 PM EDT... The affected areas were... Sandy Hook NJ to Fire Island Inlet NY out 20 NM... Fire Island Inlet to Moriches Inlet NY out 20 NM... New York Harbor... Long Island South Shore Bays... The gust front has weakened and no longer poses a significant threat to boaters. A Tornado Watch remains in effect until 900 PM EDT for northeastern New Jersey...and southeastern New York. && LAT...LON 4073 7404 4071 7398 4062 7402 4059 7397 4060 7396 4064 7393 4068 7382 4062 7372 4065 7370 4064 7364 4067 7354 4067 7339 4070 7332 4062 7294 4030 7313 4029 7326 4059 7409 4067 7413 TIME...MOT...LOC 2054Z 294DEG 54KT 4047 7291 4040 7294 4036 7301 4034 7307 $$ DW