840
WHUS71 KLWX 311608
MWWLWX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
1208 PM EDT Thu Jul 31 2025

ANZ530-531-538-539-010400-
/O.NEW.KLWX.SC.Y.0113.250801T0400Z-250802T0400Z/
Chesapeake Bay north of Pooles Island MD-
Chesapeake Bay from Pooles Island to Sandy Point MD-
Patapsco River including Baltimore Harbor-
Chester River to Queenstown MD-
1208 PM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
MIDNIGHT EDT FRIDAY NIGHT...

* WHAT...Northeast winds 10 to 15 kt with gusts up to 20 kt
  expected.

* WHERE...Chesapeake Bay north of Sandy Point MD, Patapsco River
  including Baltimore Harbor, and Chester River to Queenstown MD.

* WHEN...From midnight tonight to midnight EDT Friday 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.

&&

$$

ANZ532-533-540-541-010400-
/O.NEW.KLWX.SC.Y.0113.250801T0400Z-250802T1600Z/
Chesapeake Bay from Sandy Point to North Beach MD-
Chesapeake Bay from North Beach to Drum Point MD-Eastern Bay-
Choptank River to Cambridge MD and the Little Choptank River-
1208 PM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO NOON
EDT SATURDAY...

* WHAT...North winds 10 to 15 kt with gusts up to 20 kt expected.

* WHERE...Chesapeake Bay from Sandy Point MD to Drum Point MD,
  Eastern Bay, and Choptank River to Cambridge MD and the Little
  Choptank River.

* WHEN...From midnight tonight to noon EDT Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ534-537-543-010400-
/O.NEW.KLWX.SC.Y.0113.250801T1000Z-250803T0400Z/
Chesapeake Bay from Drum Point MD to Smith Point VA-
Tidal Potomac from Cobb Island MD to Smith Point VA-
Tangier Sound and the inland waters surrounding Bloodsworth
Island-
1208 PM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM FRIDAY TO MIDNIGHT
EDT SATURDAY NIGHT...

* WHAT...Northeast winds 10 to 15 kt with gusts up to 20 kt
  expected.

* WHERE...Chesapeake Bay from Drum Point MD to Smith Point VA,
  Tidal Potomac from Cobb Island MD to Smith Point VA, and
  Tangier Sound and the inland waters surrounding Bloodsworth
  Island.

* WHEN...From 6 AM Friday to midnight EDT Saturday 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.

&&

$$

ANZ535-010400-
/O.NEW.KLWX.SC.Y.0113.250801T1000Z-250802T0400Z/
Tidal Potomac from Key Bridge to Indian Head MD-
1208 PM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM FRIDAY TO MIDNIGHT
EDT FRIDAY NIGHT...

* WHAT...Northeast winds around 10 kt with gusts up to 20 kt
  expected.

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

* WHEN...From 6 AM Friday to midnight EDT Friday 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.

&&

$$

ANZ536-542-010400-
/O.NEW.KLWX.SC.Y.0113.250801T1000Z-250802T1600Z/
Tidal Potomac from Indian Head to Cobb Island MD-
Patuxent River to Broomes Island MD-
1208 PM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM FRIDAY TO NOON EDT
SATURDAY...

* WHAT...North winds around 10 kt with gusts up to 20 kt
  expected.

* WHERE...Tidal Potomac from Indian Head to Cobb Island MD, and
  Patuxent River to Broomes Island MD.

* WHEN...From 6 AM Friday to noon EDT Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

DHOF