Skip Navigation Links weather.gov 
NOAA logo-Select to go to the NOAA homepage NDBC Title GraphicClick to go to NDBC home page   Select to go to the NWS homepage
Home About Us Contact Us
 
 
    
    Station List

 Data Access
    Mobile Access
    Classic Maps
         Recent
         DART®
    Obs Search
    Ship Obs Report
    BuoyCAMs
    TAO
    DODS
    OceanSITES
    HF Radar
    OSMC
    Dial-A-Buoy
    RSS Feeds Image indicating link to RSS feed access page
    Web Widget
    Web Data Guide
    Maintenance Schedule
    Station Status Report

 Program Info
    TAO
    DART®
    IOOS®

 Publications
    NDBC PEA
    NDBC FONSI
    NDBC DQC Handbook

 Visitor Information
 
USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.

National Weather Service Marine Forecast FZUS51 KLWX

FZUS51 KLWX 250541
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1241 AM EST Thu Feb 25 2021

Tidal Potomac River and Maryland portion of Chesapeake Bay.

Forecasts of wave heights do not include effects of wind direction
relative to tidal currents. Expect higher waves when winds are
blowing against the tidal flow. 

ANZ500-252100-
1241 AM EST Thu Feb 25 2021

SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY

A cold front will pass through the waters tonight and high  pressure
will build overhead for Thursday into Friday. Low pressure  may
impact the waters later Friday into the weekend.



ANZ535-252100-
Tidal Potomac from Key Bridge to Indian Head-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EST THIS MORNING


Overnight
NW winds 10 to 15 kt with gusts to 30 kt. Waves 1 to
2 ft.

THU
NW winds 10 to 15 kt. Gusts up to 30 kt... diminishing to
20 kt in the late morning and afternoon. Waves 1 ft.

THU NIGHT
NW winds around 5 kt. Waves 1 ft.

FRI
NE winds 5 kt. Waves less than 1 ft.

FRI NIGHT
SE winds 5 kt. Waves less than 1 ft. Rain likely.

SAT
S winds 5 kt. Waves less than 1 ft. Rain likely.

SAT NIGHT
S winds around 5 kt. Waves 1 ft. A chance of showers.

SUN
W winds around 5 kt. Waves 1 ft. Showers likely.

MON
NW winds 5 to 10 kt. Waves 1 ft. Showers likely in the
morning, then a chance of showers. A chance of snow showers after
midnight. 



ANZ536-252100-
Tidal Potomac from Indian Head to Cobb Island-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EST THIS MORNING


Overnight
NW winds 10 to 15 kt. Gusts up to 20 kt... increasing
to 30 kt late. Waves 1 to 2 ft.

THU
NW winds 10 to 15 kt with gusts to 25 kt... becoming N 5 kt
late. Waves 1 to 2 ft.

THU NIGHT
N winds 5 kt. Waves less than 1 ft.

FRI
E winds 5 kt. Waves less than 1 ft.

FRI NIGHT
SE winds 5 kt. Waves less than 1 ft. Rain likely.

SAT
S winds 5 kt. Waves less than 1 ft. Rain likely.

SAT NIGHT
S winds around 5 kt. Waves 1 ft. A chance of showers.

SUN
W winds around 5 kt. Waves 1 ft. Showers.

MON
NW winds 5 to 10 kt. Waves 1 ft. Showers.



ANZ537-252100-
Tidal Potomac from Cobb Island to Smith Point-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON


Overnight
W winds 15 kt...becoming NW late. Gusts up to 20 kt.
Waves 2 ft.

THU
N winds 10 to 15 kt with gusts to 25 kt... diminishing to
5 kt late. Waves 2 to 3 ft.

THU NIGHT
N winds 5 kt. Waves less than 1 ft.

FRI
E winds 5 to 10 kt. Waves 1 ft.

FRI NIGHT
SE winds 5 to 10 kt. Waves 1 ft. Rain likely.

SAT
S winds 5 to 10 kt with gusts to 20 kt. Waves 2 ft. Rain
likely.

SAT NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.

SUN
W winds 5 to 10 kt. Waves 1 ft. Showers.

MON
NW winds 10 to 15 kt. Waves 1 to 2 ft. Showers.



ANZ530-252100-
Chesapeake Bay north of Pooles Island-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EST THIS MORNING


Overnight
NW winds 10 to 15 kt with gusts to 30 kt. Waves 1 to
2 ft...except flat near the mouth of the Susquehanna.

THU
NW winds 10 to 15 kt with gusts to 30 kt. Waves 1 to 2 ft.

THU NIGHT
NW winds 5 kt. Waves less than 1 ft.

FRI
NE winds 5 kt. Waves flat.

FRI NIGHT
SE winds 5 to 10 kt. Waves 1 ft. A chance of rain.

SAT
S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. Rain
likely.

SAT NIGHT
N winds around 5 kt. Waves 1 ft or less. A chance of
showers.

SUN
W winds around 5 kt. Waves 1 ft or less. Showers likely.

MON
NW winds 5 to 10 kt. Waves 1 ft. Showers likely in the
morning, then a chance of showers through the night. 



ANZ531-252100-
Chesapeake Bay from Pooles Island to Sandy Point-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EST THIS MORNING


Overnight
NW winds 10 to 15 kt with gusts to 30 kt. Waves 2 to
3 ft.

THU
NW winds 10 to 15 kt. Gusts up to 30 kt in the morning. Waves
2 to 3 ft.

THU NIGHT
NW winds 5 kt. Waves less than 1 ft.

FRI
NE winds 5 kt. Waves less than 1 ft.

FRI NIGHT
SE winds 5 to 10 kt. Waves 1 ft. Rain likely.

SAT
S winds 5 to 10 kt. Waves 1 ft. Rain likely.

SAT NIGHT
S winds around 5 kt. Waves 1 ft. A chance of showers.

SUN
W winds around 5 kt. Waves 1 ft. Showers likely.

MON
NW winds 5 to 10 kt. Waves 1 to 2 ft. Showers likely in the
morning, then a chance of showers through the night. 



ANZ538-252100-
Patapsco River including Baltimore Harbor-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EST THIS MORNING


Overnight
NW winds 10 to 15 kt with gusts to 30 kt. Waves 1 to
2 ft.

THU
NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft.

THU NIGHT
NW winds 5 kt. Waves less than 1 ft.

FRI
NE winds 5 kt. Waves flat.

FRI NIGHT
SE winds 5 to 10 kt. Waves 1 ft. Rain likely.

SAT
S winds 5 kt. Waves less than 1 ft. Rain likely.

SAT NIGHT
N winds around 5 kt. Waves 1 ft or less. A chance of
showers.

SUN
W winds around 5 kt. Waves 1 ft or less. Showers likely.

MON
NW winds 5 to 10 kt. Waves 1 ft. Showers likely in the
morning, then a chance of showers through the night. 



ANZ539-252100-
Chester River to Queenstown MD-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EST THIS MORNING


Overnight
NW winds 10 to 15 kt with gusts to 30 kt. Waves 2 to
3 ft.

THU
NW winds 10 to 15 kt. Gusts up to 30 kt in the morning. Waves
2 to 3 ft.

THU NIGHT
NW winds 5 kt. Waves less than 1 ft.

FRI
NE winds 5 kt. Waves less than 1 ft.

FRI NIGHT
SE winds 5 to 10 kt. Waves 1 ft. Rain likely.

SAT
S winds 10 kt. Waves 1 ft. Rain likely.

SAT NIGHT
S winds around 5 kt. Waves 1 ft. A chance of showers.

SUN
W winds around 5 kt. Waves 1 ft. Showers likely.

MON
NW winds 5 to 10 kt. Waves 1 to 2 ft. Showers likely in the
morning, then a chance of showers through the night. 



ANZ532-252100-
Chesapeake Bay from Sandy Point to North Beach-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON


Overnight
NW winds 10 to 15 kt with gusts to 30 kt. Waves 2 to
3 ft.

THU
NW winds 10 to 15 kt with gusts to 30 kt... diminishing to
5 kt late. Waves 2 to 3 ft.

THU NIGHT
NW winds 5 kt. Waves less than 1 ft.

FRI
NE winds 5 kt. Waves less than 1 ft.

FRI NIGHT
SE winds 5 to 10 kt. Waves 1 ft. Rain likely.

SAT
S winds 5 to 10 kt. Waves 2 ft. Rain likely.

SAT NIGHT
S winds around 5 kt. Waves 1 ft. A chance of showers.

SUN
SW winds 5 kt. Waves less than 1 ft. Showers likely.

MON
NW winds 5 to 10 kt. Waves 1 to 2 ft. Showers likely, then a
chance of rain and snow showers after midnight. 



ANZ540-252100-
Eastern Bay-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON


Overnight
W winds 10 kt with gusts to 20 kt...becoming NW 20 kt
with gusts to 30 kt late. Waves 1 to 2 ft.

THU
NW winds 10 to 15 kt with gusts to 30 kt. Waves 1 to 2 ft.

THU NIGHT
NW winds 5 kt. Waves less than 1 ft.

FRI
NE winds 5 kt. Waves less than 1 ft.

FRI NIGHT
SE winds 5 to 10 kt. Waves 1 ft. Rain likely.

SAT
S winds 10 kt. Waves 1 ft. Rain likely.

SAT NIGHT
S winds around 5 kt. Waves 1 ft. A chance of showers.

SUN
W winds around 5 kt. Waves 1 ft. Showers likely.

MON
NW winds 5 to 10 kt. Waves 1 ft. Showers likely, then a
chance of rain and snow showers after midnight. 



ANZ533-252100-
Chesapeake Bay from North Beach to Drum Point-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON


Overnight
W winds 10 kt...becoming NW 20 kt late. Gusts up to
25 kt. Waves 2 to 3 ft.

THU
N winds 10 to 15 kt with gusts to 30 kt... diminishing to
5 kt late. Waves 2 to 3 ft.

THU NIGHT
N winds 5 kt. Waves less than 1 ft.

FRI
NE winds 5 kt. Waves less than 1 ft.

FRI NIGHT
SE winds 5 to 10 kt. Waves 1 ft. Rain likely.

SAT
S winds 10 kt with gusts to 20 kt. Waves 2 ft. Rain likely.

SAT NIGHT
SW winds 5 kt. Waves less than 1 ft. A chance of
showers.

SUN
W winds 5 to 10 kt. Waves 1 ft. Showers.

MON
NW winds 10 to 15 kt. Waves 1 to 2 ft. Showers.



ANZ541-252100-
Choptank River to Cambridge MD and the Little Choptank River-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON


Overnight
W winds 10 kt...becoming NW 20 kt late. Gusts up to
25 kt. Waves 1 to 2 ft.

THU
NW winds 15 kt with gusts to 30 kt... becoming N 5 to 10 kt
in the afternoon. Waves 1 to 2 ft.

THU NIGHT
NW winds 5 kt. Waves less than 1 ft.

FRI
NE winds 5 kt. Waves less than 1 ft.

FRI NIGHT
SE winds 5 to 10 kt. Waves 1 ft. Rain likely.

SAT
S winds 10 kt with gusts to 20 kt. Waves 1 ft. Rain likely.

SAT NIGHT
S winds around 5 kt. Waves 1 ft. A chance of showers.

SUN
SW winds 5 kt. Waves less than 1 ft. Showers.

MON
NW winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely . 



ANZ542-252100-
Patuxent River to Broomes Island MD-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON


Overnight
NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

THU
N winds 10 to 15 kt with gusts to 25 kt... diminishing to
5 kt late. Waves 1 ft.

THU NIGHT
N winds 5 kt. Waves less than 1 ft.

FRI
NE winds 5 kt. Waves less than 1 ft.

FRI NIGHT
SE winds 5 to 10 kt. Waves 1 ft. Rain likely.

SAT
S winds 10 kt with gusts to 20 kt. Waves 1 ft. Rain likely.

SAT NIGHT
SW winds 5 to 10 kt in the evening... becoming light.
Waves 1 ft. A chance of showers.

SUN
W winds around 5 kt. Waves 1 ft. Showers.

MON
NW winds 5 to 10 kt. Waves 1 ft. Showers.



ANZ534-252100-
Chesapeake Bay from Drum Point to Smith Point-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON


Overnight
SW winds 15 kt...becoming NW late. Waves 2 ft.

THU
NW winds 15 to 20 kt with gusts to 30 kt... becoming N 5 to
10 kt in the afternoon. Waves 2 to 3 ft.

THU NIGHT
N winds 5 kt. Waves less than 1 ft.

FRI
E winds 5 to 10 kt. Waves 1 ft.

FRI NIGHT
E winds 5 to 10 kt. Waves 1 ft. Rain likely.

SAT
S winds 10 kt with gusts to 20 kt. Waves 2 ft. Rain likely.

SAT NIGHT
SW winds 5 to 10 kt. Waves 1 to 2 ft. A chance of
showers.

SUN
SE winds 5 to 10 kt...becoming W. Waves 1 to 2 ft. Showers.

MON
NW winds 10 to 15 kt. Waves 1 to 2 ft. Showers.



ANZ543-252100-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1241 AM EST Thu Feb 25 2021

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON


Overnight
SW winds 15 kt...becoming NW late. Waves 1 to 2 ft.

THU
NW winds 15 to 20 kt with gusts to 25 kt... diminishing to
5 to 10 kt with gusts to 20 kt in the afternoon. Waves 1 to 2 ft.

THU NIGHT
N winds 5 kt. Waves less than 1 ft.

FRI
E winds 5 to 10 kt. Waves 1 ft.

FRI NIGHT
E winds 5 to 10 kt. Waves 1 ft. Rain likely.

SAT
SE winds 10 to 15 kt...becoming S in the afternoon. Gusts up
to 20 kt. Waves 2 ft. Rain likely.

SAT NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.

SUN
W winds 5 to 10 kt. Waves 1 ft. Showers.

MON
NW winds 10 to 15 kt. Waves 1 to 2 ft. Showers.