Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
756 FZUS51 KLWX 272034 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 434 PM EDT Wed Aug 27 2025 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. Waves flat where waters are iced over. ANZ500-280800- 434 PM EDT Wed Aug 27 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... High pressure will build over the Mid-Atlantic this week. A cold front likely crosses the region Friday. High pressure returns for the weekend. Small Craft Advisories may be needed Thursday into Thursday night, and again on Friday. $$ ANZ535-280800- Tidal Potomac from Key Bridge to Indian Head- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...W winds 5 to 10 kt in the evening...becoming light. Waves 1 ft or less. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds around 5 kt. Waves 1 ft. .FRI NIGHT...N winds 5 kt. Waves less than 1 ft. .SAT...NE winds around 5 kt. Waves 1 ft. .SUN...NE winds around 5 kt. Waves 1 ft or less. $$ ANZ536-280800- Tidal Potomac from Indian Head to Cobb Island- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...W winds around 5 kt. Waves 1 ft or less. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 kt. Waves less than 1 ft. .FRI NIGHT...N winds 5 kt. Waves less than 1 ft. .SAT...NE winds around 5 kt. Waves 1 ft. .SUN...NE winds around 5 kt. Waves 1 ft. $$ ANZ537-280800- Tidal Potomac from Cobb Island to Smith Point- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...SW winds 5 kt. Waves less than 1 ft. .THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. $$ ANZ530-280800- Chesapeake Bay north of Pooles Island- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...NW winds 5 to 10 kt. Waves 1 ft or less. .THU...SW winds 5 to 10 kt. Waves 1 ft or less. .THU NIGHT...S winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft or less. .SUN...N winds 5 kt. Waves less than 1 ft. $$ ANZ531-280800- Chesapeake Bay from Pooles Island to Sandy Point- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...W winds 5 to 10 kt. Waves 1 ft or less. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 10 to 15 kt. Waves 2 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft or less. $$ ANZ538-280800- Patapsco River including Baltimore Harbor- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...NW winds 5 to 10 kt in the evening...becoming light. Waves 1 ft or less. .THU...SW winds 5 to 10 kt...becoming S late. Waves 1 ft or less. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft or less. .SUN...NE winds around 5 kt. Waves 1 ft or less. $$ ANZ539-280800- Chester River to Queenstown MD- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 5 kt. Waves less than 1 ft. .TONIGHT...W winds around 5 kt. Waves 1 ft or less. .THU...SW winds 5 to 10 kt. Waves 1 ft or less. .THU NIGHT...S winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft or less. .SUN...NE winds around 5 kt. Waves 1 ft or less. $$ ANZ532-280800- Chesapeake Bay from Sandy Point to North Beach- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...W winds 5 to 10 kt. Waves 1 ft or less. .THU...SW winds 10 to 15 kt. Waves 1 to 2 ft. .THU NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft or less. $$ ANZ540-280800- Eastern Bay- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 5 kt. Waves less than 1 ft. .TONIGHT...W winds around 5 kt. Waves 1 ft or less. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft or less. .SUN...NE winds 5 to 10 kt. Waves 1 ft or less. $$ ANZ533-280800- Chesapeake Bay from North Beach to Drum Point- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...W winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. .THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. $$ ANZ541-280800- Choptank River to Cambridge MD and the Little Choptank River- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 5 kt. Waves less than 1 ft. .TONIGHT...W winds 5 kt. Waves less than 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft or less. $$ ANZ542-280800- Patuxent River to Broomes Island MD- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...SW winds around 5 kt. Waves 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...S winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. $$ ANZ534-280800- Chesapeake Bay from Drum Point to Smith Point- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 10 kt. Waves 2 ft. .TONIGHT...W winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. .THU NIGHT...S winds 15 to 20 kt. Waves 3 ft. .FRI...W winds 10 to 15 kt...becoming NW 5 kt in the afternoon. Waves 1 to 2 ft. .FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 to 2 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. $$ ANZ543-280800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 434 PM EDT Wed Aug 27 2025 .REST OF THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. .THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .FRI...W winds 10 to 15 kt. Waves 1 ft. .FRI NIGHT...SE winds 5 to 10 kt...becoming NE after midnight. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. $$