287 

WHUS51 KLWX 301206

SMWLWX

ANZ535-301400-

/O.NEW.KLWX.MA.W.0251.251030T1206Z-251030T1400Z/



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Special Marine Warning

National Weather Service Baltimore MD/Washington DC

806 AM EDT Thu Oct 30 2025



The National Weather Service in Sterling Virginia has issued a



* Special Marine Warning for...

  Tidal Potomac from Key Bridge to Indian Head MD...



* Until 1000 AM EDT.



* At 806 AM EDT, strong thunderstorms were located along a line

  extending from Key Bridge to Woodrow Wilson Bridge to near Indian

  Head, moving north at 40 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...

  Fort Washington, Tidal Basin, Reagan National Airport, Gunston

  Hall, 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 7708 3873 7706 3890 7708 3891 7705

      3885 7700 3870 7700 3867 7708 3862 7709

      3864 7710 3864 7711 3865 7714 3864 7713

      3866 7716 3870 7721

TIME...MOT...LOC 1206Z 186DEG 38KT 3888 7707 3878 7705 3862 7704 



HAIL...0.00IN

WIND...>34KTS



$$



DHOF






861 

FZUS71 KLWX 301240

MWSLWX



Marine Weather Statement

National Weather Service Baltimore MD/Washington DC

840 AM EDT Thu Oct 30 2025



ANZ535-301250-

/O.CAN.KLWX.MA.W.0251.000000T0000Z-251030T1400Z/

840 AM EDT Thu Oct 30 2025



...THE SPECIAL MARINE WARNING IS CANCELLED...



The affected areas were... 

Tidal Potomac from Key Bridge to Indian Head MD...



The thunderstorms have moved out of the area and no longer pose a

significant threat to boaters.



&&



LAT...LON 3873 7708 3873 7706 3890 7708 3891 7705

      3885 7700 3870 7700 3867 7708 3862 7709

      3864 7710 3864 7711 3865 7714 3864 7713

      3866 7716 3870 7721

TIME...MOT...LOC 1235Z 186DEG 38KT 4010 7690 4000 7688 3984 7687 



$$



DHOF






287 

FZUS71 KLWX 301241

MWSLWX



Marine Weather Statement

National Weather Service Baltimore MD/Washington DC

841 AM EDT Thu Oct 30 2025



ANZ531>533-538-301400-

/O.CON.KLWX.MA.W.0250.000000T0000Z-251030T1400Z/

841 AM EDT Thu Oct 30 2025



...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1000 AM 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...

Patapsco River including Baltimore Harbor...



At 840 AM EDT, a severe thunderstorm capable of producing waterspouts

was located over Thomas Point Light, moving north at 45 knots.



HAZARD...Waterspouts and 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. 

         Waterspouts can easily overturn boats and create locally 

         hazardous seas.



Locations impacted include...

North Point State Park, Pooles Island, Greenbury Point, Shady Side,

Herring Bay, Highland Beach, Gunpowder River, Sandy Point State Park,

Severn River, Bloody Point Light, Thomas Point Light, Calvert Cliffs,

Poplar Island, Fort Smallwood State Park, Pinehurst, Hart Miller

Island, Gibson Island, Bodkin Point, Chesapeake Beach, and Love

Point.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Move to safe harbor immediately as gusty winds and high waves are

expected.



&&



LAT...LON 3939 7630 3930 7628 3927 7621 3917 7628

      3904 7630 3894 7636 3885 7638 3838 7634

      3842 7644 3850 7652 3870 7655 3899 7649

      3902 7641 3913 7645 3926 7665 3930 7660

      3922 7649 3923 7643 3932 7635 3940 7636

TIME...MOT...LOC 1240Z 180DEG 47KT 3894 7641 



WATERSPOUT...POSSIBLE

HAIL...0.00IN

WIND...>34KTS



$$



DHOF