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.

Hurricane Symbol Storm Special! View the latest observations near Atlantic Hurricane Sam.

National Weather Service Marine Forecast FZUS51 KLWX

FZUS51 KLWX 281736
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
136 PM EDT Tue Sep 28 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. 

ANZ500-290800-
136 PM EDT Tue Sep 28 2021

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

A cold front will cross the waters late tonight. Canadian high
pressure will then build southward toward the waters through the end
 of the work week, continuing into the weekend. Small Craft
Advisories may be needed for portions of the waters on Wednesday.



ANZ535-290800-
Tidal Potomac from Key Bridge to Indian Head-
136 PM EDT Tue Sep 28 2021

THIS AFTERNOON
W winds 10 kt. Waves 1 ft. Showers and tstms
likely.

TONIGHT
N winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.

WED
N winds 5 to 10 kt. Waves 1 ft.

WED NIGHT
N winds around 5 kt. Waves 1 ft.

THU
N winds around 5 kt. Waves 1 ft.

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

FRI
NW winds around 5 kt. Waves 1 ft or less.

SAT
W winds around 5 kt. Waves 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.



ANZ536-290800-
Tidal Potomac from Indian Head to Cobb Island-
136 PM EDT Tue Sep 28 2021

THIS AFTERNOON
W winds 5 to 10 kt. Waves 1 ft. Showers and tstms
likely.

TONIGHT
W winds 5 to 10 kt...becoming N in the late evening and
overnight. Waves 1 ft. A chance of showers and tstms.

WED
N winds 5 to 10 kt. Waves 1 ft.

WED NIGHT
N winds around 5 kt. Waves 1 ft.

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

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

FRI
N winds around 5 kt. Waves 1 ft.

SAT
W winds 5 kt. Waves less than 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.



ANZ537-290800-
Tidal Potomac from Cobb Island to Smith Point-
136 PM EDT Tue Sep 28 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH WEDNESDAY AFTERNOON...

THIS AFTERNOON
SW winds 10 kt. Waves 1 ft. Showers and tstms
likely.

TONIGHT
W winds 10 to 15 kt...becoming N after midnight. Gusts up
to 20 kt. Waves 1 to 2 ft. A chance of showers and tstms.

WED
N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft.

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
N winds 5 to 10 kt. Waves 2 ft.

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

SAT
NW winds 5 to 10 kt...becoming SW. Waves 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.



ANZ530-290800-
Chesapeake Bay north of Pooles Island-
136 PM EDT Tue Sep 28 2021

THIS AFTERNOON
W winds 10 kt. Waves 1 ft. A chance of showers and
tstms.

TONIGHT
N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

WED
N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft or less.

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
N winds 5 to 10 kt. Waves 1 ft.

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

SAT
NW winds 5 kt. Waves less than 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.



ANZ531-290800-
Chesapeake Bay from Pooles Island to Sandy Point-
136 PM EDT Tue Sep 28 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH WEDNESDAY MORNING...

THIS AFTERNOON
W winds 10 kt. Waves 1 ft. Showers and tstms
likely.

TONIGHT
NW winds 10 to 15 kt...becoming N after midnight. Gusts
up to 20 kt. Waves 2 ft. A chance of showers and tstms.

WED
N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft.

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
N winds 5 to 10 kt. Waves 1 to 2 ft.

FRI
N winds 5 to 10 kt. Waves 1 ft or less.

SAT
W winds 5 kt. Waves less than 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.



ANZ538-290800-
Patapsco River including Baltimore Harbor-
136 PM EDT Tue Sep 28 2021

THIS AFTERNOON
W winds 10 kt. Waves 1 ft. Showers and tstms
likely.

TONIGHT
N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers and tstms.

WED
N winds 10 kt. Waves 1 ft.

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

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
N winds 5 to 10 kt. Waves 1 ft.

FRI
NW winds around 5 kt. Waves 1 ft or less.

SAT
W winds 5 kt. Waves less than 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.



ANZ539-290800-
Chester River to Queenstown MD-
136 PM EDT Tue Sep 28 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH WEDNESDAY MORNING...

THIS AFTERNOON
SW winds 10 kt. Waves 1 ft. Showers and tstms
likely.

TONIGHT
NW winds 10 to 15 kt...becoming N after midnight. Gusts
up to 20 kt. Waves 1 to 2 ft. A chance of showers and tstms.

WED
N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft.

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
N winds 5 to 10 kt. Waves 1 to 2 ft.

FRI
N winds 5 to 10 kt. Waves 1 ft or less.

SAT
W winds 5 kt. Waves less than 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.



ANZ532-290800-
Chesapeake Bay from Sandy Point to North Beach-
136 PM EDT Tue Sep 28 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH WEDNESDAY MORNING...

THIS AFTERNOON
SW winds 10 kt. Waves 1 ft. Showers and tstms
likely.

TONIGHT
NW winds 10 to 15 kt...becoming N after midnight. Gusts
up to 20 kt. Waves 1 to 2 ft. A chance of showers and tstms.

WED
N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft.

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
N winds 5 to 10 kt. Waves 1 to 2 ft.

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

SAT
W winds 5 kt. Waves less than 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.



ANZ540-290800-
Eastern Bay-
136 PM EDT Tue Sep 28 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH WEDNESDAY MORNING...

THIS AFTERNOON
SW winds 10 kt. Waves 1 ft. Showers and tstms
likely.

TONIGHT
NW winds 10 to 15 kt...becoming N after midnight. Gusts
up to 20 kt. Waves 1 ft. A chance of showers and tstms.

WED
N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft.

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
N winds 5 to 10 kt. Waves 1 ft.

FRI
N winds 5 to 10 kt. Waves 1 ft or less.

SAT
W winds 5 kt. Waves less than 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.



ANZ533-290800-
Chesapeake Bay from North Beach to Drum Point-
136 PM EDT Tue Sep 28 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH WEDNESDAY MORNING...

THIS AFTERNOON
SW winds 10 kt. Waves 1 ft. Showers and tstms
likely.

TONIGHT
W winds 10 to 15 kt...becoming N after midnight. Gusts up
to 20 kt. Waves 1 to 2 ft. A chance of showers and tstms.

WED
N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft.

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
N winds 10 kt. Waves 2 ft.

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

SAT
W winds 5 to 10 kt. Waves 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.



ANZ541-290800-
Choptank River to Cambridge MD and the Little Choptank River-
136 PM EDT Tue Sep 28 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH WEDNESDAY MORNING...

THIS AFTERNOON
SW winds 10 kt. Waves 1 ft. Showers and tstms
likely.

TONIGHT
W winds 10 kt...becoming N after midnight. Gusts up to
20 kt. Waves 1 to 2 ft. Showers and tstms likely.

WED
N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

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

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
N winds 5 to 10 kt. Waves 1 ft.

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

SAT
W winds 5 kt. Waves less than 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.



ANZ542-290800-
Patuxent River to Broomes Island MD-
136 PM EDT Tue Sep 28 2021

THIS AFTERNOON
SW winds 5 to 10 kt. Waves 1 ft. Showers and tstms
likely.

TONIGHT
NW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

WED
N winds 10 to 15 kt. Waves 1 ft.

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

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
N winds 5 to 10 kt. Waves 1 ft.

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

SAT
W winds 5 kt. Waves less than 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.



ANZ534-290800-
Chesapeake Bay from Drum Point to Smith Point-
136 PM EDT Tue Sep 28 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH WEDNESDAY AFTERNOON...

THIS AFTERNOON
S winds 10 kt. Waves 1 ft. Showers and tstms
likely.

TONIGHT
SW winds 10 to 15 kt...becoming N late. Gusts up to
20 kt. Waves 2 ft. A chance of showers and tstms.

WED
N winds 15 to 20 kt. Waves 3 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 to 2 ft.

THU
N winds 5 to 10 kt. Waves 1 to 2 ft.

THU NIGHT
N winds 10 kt. Waves 2 ft.

FRI
N winds 5 to 10 kt. Waves 1 to 2 ft.

SAT
W winds 5 to 10 kt. Waves 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.



ANZ543-290800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
136 PM EDT Tue Sep 28 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH WEDNESDAY AFTERNOON...

THIS AFTERNOON
SW winds 10 kt. Waves 1 ft. Showers and tstms
likely.

TONIGHT
SW winds 10 to 15 kt...becoming N late. Gusts up to
20 kt. Waves 1 to 2 ft. A chance of showers and tstms.

WED
N winds 15 to 20 kt. Waves 2 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft.

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
N winds 5 to 10 kt. Waves 1 ft.

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

SAT
W winds 5 to 10 kt. Waves 1 ft. 

Winds and waves higher and visibilities lower in and near tstms.