127  
WHUS71 KLWX 202340  
MWWLWX  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
740 PM EDT MON OCT 20 2025  
 
ANZ535-536-210745-  
/O.CON.KLWX.SC.Y.0146.251021T1500Z-251022T0000Z/  
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD-  
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD-  
740 PM EDT MON OCT 20 2025  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT  
TUESDAY...  
 
* WHAT...SOUTH WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT EXPECTED.  
 
* WHERE...TIDAL POTOMAC RIVER FROM KEY BRIDGE TO COBB ISLAND MD.  
 
* WHEN...FROM 11 AM TO 8 PM EDT TUESDAY.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
 
ANZ530-210745-  
/O.CON.KLWX.SC.Y.0146.251021T1500Z-251022T0400Z/  
CHESAPEAKE BAY NORTH OF POOLES ISLAND MD-  
740 PM EDT MON OCT 20 2025  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO  
MIDNIGHT EDT TUESDAY NIGHT...  
 
* WHAT...SOUTH WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT EXPECTED.  
 
* WHERE...CHESAPEAKE BAY NORTH OF POOLES ISLAND MD.  
 
* WHEN...FROM 11 AM TUESDAY TO MIDNIGHT EDT TUESDAY NIGHT.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
 
ANZ531>534-537>543-210745-  
/O.CON.KLWX.SC.Y.0146.251021T1500Z-251022T1000Z/  
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD-  
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD-  
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD-  
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA-  
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA-  
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-  
CHESTER RIVER TO QUEENSTOWN MD-EASTERN BAY-  
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-  
PATUXENT RIVER TO BROOMES ISLAND MD-  
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH  
ISLAND-  
740 PM EDT MON OCT 20 2025  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO  
6 AM EDT WEDNESDAY...  
 
* WHAT...SOUTHWEST WINDS 10 TO 20 KT WITH GUSTS UP TO 25 KT  
EXPECTED.  
 
* WHERE...CHESAPEAKE BAY FROM SMITH POINT VA TO POOLES ISLAND MD  
AND ADJOINING ESTUARIES, AND TIDAL POTOMAC FROM COBB ISLAND MD  
TO SMITH POINT VA.  
 
* WHEN...FROM 11 AM TUESDAY TO 6 AM EDT WEDNESDAY.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
 
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