Special Marine Warning issued October 16 at 9:42PM EDT until October 16 at 10:15PM EDT by NWS Baltimore MD/Washington DC

Each update compares two versions we saved. This may not include every update from the source. A missing report does not mean an event has ended.

Showing 1 change

1. Saved by us

   17 October 2026 at 01:47 UTC

   Version 2

   Source status changed

   Title

   Before

   Special Marine Warning issued October 16 at 9:11PM EDT until October 16 at 10:15PM EDT by NWS Baltimore MD/Washington DC

   After

   Special Marine Warning issued October 16 at 9:42PM EDT until October 16 at 10:15PM EDT by NWS Baltimore MD/Washington DC

   Source updated

   Before

   17 October 2026 at 01:11 UTC

   After

   17 October 2026 at 01:42 UTC

   Effective from

   Before

   17 October 2026 at 01:11 UTC

   After

   17 October 2026 at 01:42 UTC

   Forecast onset

   Before

   17 October 2026 at 01:11 UTC

   After

   17 October 2026 at 01:42 UTC

   Message type

   Before

   Alert

   After

   Update

   Source status

   Before

   Source alert

   After

   Source update

   Official description

   Before

   SMWLWX 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 1015 PM EDT. * At 911 PM EDT, strong thunderstorms were located along a line extending from near Quantico to 8 nm southwest of Potomac Creek to 24 nm southwest of Fairview Beach, moving east 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... Breton Bay, Potomac Creek, Saint Clements Bay, Westmoreland State Park, Maryland Point, Nanjemoy Creek, Port Tobacco River, Quantico, Cobb Island, Swan Point, Coltons Point, Nomini Bay, Mathias Point, U.S. 301 Nice Memorial Bridge, Wicomico River, White Point Beach, Popes Creek, Brent Point, Fairview Beach, and Colonial Beach.

   After

   For the following areas... Tidal Potomac from Cobb Island MD to Smith Point VA... Tidal Potomac from Indian Head to Cobb Island MD... At 942 PM EDT, strong thunderstorms were located along a line extending from near Port Tobacco River to Colonial Beach to 15 nm southwest of Westmoreland State Park, moving east 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... Breton Bay, Potomac Creek, Saint Clements Bay, Maryland Point, Nanjemoy Creek, Port Tobacco River, Cobb Island, Swan Point, Coltons Point, Mathias Point, U.S. 301 Nice Memorial Bridge, Wicomico River, White Point Beach, Popes Creek, Brent Point, Nomini Bay, Fairview Beach, Colonial Beach, and Dahlgren.

   External source link

   Before

   https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.19e25fa51c5077ad086dafc3a2840f02f743da3c.001.1

   After

   https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.b23bdb1f689983eff71654d8d3e1839e1689d45e.001.1

   Bulletin issued: 17 October 2026 at 01:42 UTC

   View saved version 2

   Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.

   {
     "id": "nws:1922e0be1fea5f268db7def8",
     "authorityId": "urn:oid:2.49.0.1.840.0.b23bdb1f689983eff71654d8d3e1839e1689d45e.001.1",
     "sender": "w-nws.webmaster@noaa.gov",
     "references": [
       {
         "identifier": "urn:oid:2.49.0.1.840.0.19e25fa51c5077ad086dafc3a2840f02f743da3c.001.1",
         "sender": "w-nws.webmaster@noaa.gov"
       }
     ],
     "category": "weather",
     "title": "Special Marine Warning issued October 16 at 9:42PM EDT until October 16 at 10:15PM EDT by NWS Baltimore MD/Washington DC",
     "eventType": "Special Marine Warning",
     "occurredAt": "2026-10-17T01:42:00.000Z",
     "issuedAt": "2026-10-17T01:42:00.000Z",
     "timeBasis": "Bulletin issued",
     "effectiveAt": "2026-10-17T01:42:00.000Z",
     "onsetAt": "2026-10-17T01:42:00.000Z",
     "expiresAt": "2026-10-17T02:15:00.000Z",
     "forecastEndAt": "2026-10-17T02:15:00.000Z",
     "severity": "Severe",
     "urgency": "Immediate",
     "certainty": "Likely",
     "messageType": "Update",
     "status": "Source update",
     "place": "Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA",
     "coordinates": null,
     "issuer": "NWS Baltimore MD/Washington DC",
     "summary": "Special Marine Warning · Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA. Severe; likely; urgency: immediate.",
     "description": "For the following areas...\nTidal Potomac from Cobb Island MD to Smith Point VA...\nTidal Potomac from Indian Head to Cobb Island MD...\n\nAt 942 PM EDT, strong thunderstorms were located along a line\nextending from near Port Tobacco River to Colonial Beach to 15 nm\nsouthwest of Westmoreland State Park, moving east at 40 knots.\n\nHAZARD...Wind gusts 34 knots or greater.\n\nSOURCE...Radar indicated.\n\nIMPACT...Boaters in small craft could be thrown overboard by\nsuddenly higher winds and waves capsizing their vessel.\n\nLocations impacted include...\nBreton Bay, Potomac Creek, Saint Clements Bay, Maryland Point,\nNanjemoy Creek, Port Tobacco River, Cobb Island, Swan Point, Coltons\nPoint, Mathias Point, U.S. 301 Nice Memorial Bridge, Wicomico River,\nWhite Point Beach, Popes Creek, Brent Point, Nomini Bay, Fairview\nBeach, Colonial Beach, and Dahlgren.",
     "instruction": "Move to safe harbor until hazardous weather passes.",
     "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.b23bdb1f689983eff71654d8d3e1839e1689d45e.001.1",
     "source": "nws",
     "sourceName": "NOAA NWS"
   }

   Visit the external source ↗

   The external page may have changed since this version was saved.