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
649 FZUS51 KLWX 140234 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 1034 PM EDT Wed Aug 13 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. ANZ500-140800- 1034 PM EDT Wed Aug 13 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... A frontal system will approach and move through the forecast area tonight through Thursday as high pressure moves further offshore. This frontal boundary eventually stalls nearby on Friday into the first half of the weekend. $$ ANZ535-140800- Tidal Potomac from Key Bridge to Indian Head- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...SW winds around 5 kt. Waves 1 ft or less. Scattered showers and tstms late this evening, then isolated showers and tstms. Vsby 1 NM or less late this evening. .THU...NW winds around 5 kt. Waves 1 ft. A chance of showers and tstms. Vsby 1 NM or less. .THU NIGHT...N winds around 5 kt. Waves 1 ft. .FRI...NE winds around 5 kt. Waves 1 ft. .FRI NIGHT...E winds around 5 kt. Waves 1 ft. .SAT...E winds around 5 kt. Waves 1 ft. .SAT NIGHT...S winds around 5 kt. Waves 1 ft. .SUN...SW winds around 5 kt. Waves 1 ft or less. .MON...E winds around 5 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ536-140800- Tidal Potomac from Indian Head to Cobb Island- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...W winds 5 kt. Waves less than 1 ft. Scattered showers and tstms late this evening, then isolated showers and tstms. .THU...NW winds around 5 kt. Waves 1 ft. .THU NIGHT...NW winds around 5 kt. Waves 1 ft. A chance of showers and tstms. Vsby 1 NM or less. .FRI...NE winds around 5 kt. Waves 1 ft. .FRI NIGHT...E winds around 5 kt. Waves 1 ft. .SAT...E winds around 5 kt. Waves 1 ft. .SAT NIGHT...SE winds around 5 kt. Waves 1 ft. .SUN...S winds around 5 kt. Waves 1 ft or less. .MON...E winds 5 kt. Waves less than 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ537-140800- Tidal Potomac from Cobb Island to Smith Point- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. Scattered showers and tstms late this evening, then scattered showers with isolated tstms. Vsby 1 NM or less late this evening. .THU...NW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. Vsby 1 NM or less. .THU NIGHT...NW winds around 5 kt. Waves flat. A chance of showers and tstms. Vsby 1 NM or less. .FRI...NE winds 5 kt. Waves less than 1 ft. A chance of showers. .FRI NIGHT...E winds 5 kt. Waves less than 1 ft. .SAT...E winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...SE winds around 5 kt. Waves 1 ft. .SUN...S winds 5 to 10 kt. Waves 1 ft or less. .MON...NW winds 5 kt...becoming SE. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ530-140800- Chesapeake Bay north of Pooles Island- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...S winds 10 kt...becoming NW. Waves 1 ft or less. Scattered tstms. Scattered showers. Vsby 1 to 3 NM. .THU...N winds around 5 kt. Waves flat. A chance of showers and tstms. Vsby 1 NM or less. .THU NIGHT...N winds around 5 kt. Waves flat. .FRI...NE winds 5 kt. Waves less than 1 ft. .FRI NIGHT...E winds 5 kt. Waves flat. .SAT...E winds 5 kt. Waves flat. .SAT NIGHT...S winds around 5 kt. Waves flat. .SUN...SW winds 5 to 10 kt. Waves 1 ft or less. .MON...E winds 5 kt. Waves less than 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ531-140800- Chesapeake Bay from Pooles Island to Sandy Point- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...SW winds 5 to 10 kt...becoming NW late. Waves 1 ft or less. Scattered showers and tstms. Vsby 1 NM or less. .THU...N winds 5 kt. Waves flat. A chance of showers and tstms. Vsby 1 NM or less. .THU NIGHT...N winds around 5 kt. Waves flat. .FRI...NE winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...E winds 5 kt. Waves less than 1 ft. .SAT...E winds 5 kt. Waves less than 1 ft. .SAT NIGHT...S winds 5 kt. Waves less than 1 ft. .SUN...SW winds 5 to 10 kt. Waves 1 ft or less. .MON...N winds 5 to 10 kt...becoming SE. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ538-140800- Patapsco River including Baltimore Harbor- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...W winds 5 kt. Waves flat. Scattered showers. Scattered tstms late this evening, then isolated tstms. .THU...N winds around 5 kt. Waves flat. A chance of showers and tstms. Vsby 1 NM or less. .THU NIGHT...N winds around 5 kt. Waves flat. .FRI...NE winds 5 kt. Waves less than 1 ft. .FRI NIGHT...E winds around 5 kt. Waves 1 ft or less. .SAT...E winds 5 kt. Waves flat. .SAT NIGHT...S winds around 5 kt. Waves flat. .SUN...SW winds around 5 kt. Waves 1 ft or less. .MON...E winds 5 kt. Waves less than 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ539-140800- Chester River to Queenstown MD- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...SW winds 5 kt. Waves less than 1 ft. Scattered tstms. Scattered showers. Vsby 1 to 3 NM. .THU...NW winds 5 kt. Waves flat. A chance of showers and tstms. .THU NIGHT...N winds around 5 kt. Waves flat. .FRI...NE winds 5 kt. Waves less than 1 ft. .FRI NIGHT...E winds 5 kt. Waves flat. .SAT...E winds 5 kt. Waves flat. .SAT NIGHT...S winds around 5 kt. Waves flat. .SUN...SW winds 5 to 10 kt. Waves 1 ft or less. .MON...E winds 5 kt. Waves less than 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ532-140800- Chesapeake Bay from Sandy Point to North Beach- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...SW winds 5 to 10 kt...becoming W late. Waves 1 ft. Scattered showers and tstms late this evening, then isolated showers and tstms. Vsby 1 NM or less late this evening. .THU...N winds 5 kt. Waves flat. A chance of showers and tstms. Vsby 1 NM or less. .THU NIGHT...NW winds 5 kt. Waves flat. .FRI...NE winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...E winds 5 kt. Waves less than 1 ft. .SAT...E winds 5 kt. Waves less than 1 ft. .SAT NIGHT...S winds 5 kt. Waves less than 1 ft. .SUN...SW winds 5 to 10 kt. Waves 1 ft or less. .MON...NE winds 5 to 10 kt...becoming SE. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ540-140800- Eastern Bay- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...SW winds 5 kt. Waves less than 1 ft. Scattered showers and tstms. .THU...NW winds 5 kt. Waves flat. A chance of showers and tstms. .THU NIGHT...N winds around 5 kt. Waves flat. .FRI...NE winds 5 kt. Waves less than 1 ft. .FRI NIGHT...E winds 5 kt. Waves less than 1 ft. .SAT...E winds 5 kt. Waves less than 1 ft. .SAT NIGHT...S winds 5 kt. Waves flat. .SUN...SW winds 5 to 10 kt. Waves 1 ft or less. .MON...NE winds 5 to 10 kt...becoming SE. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ533-140800- Chesapeake Bay from North Beach to Drum Point- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...S winds 15 kt with gusts to 20 kt... becoming W 5 kt. Waves 1 ft. Scattered showers. Scattered tstms late this evening, then isolated tstms. .THU...NW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. Vsby 1 NM or less. .THU NIGHT...NW winds around 5 kt. Waves flat. .FRI...NE winds 5 kt. Waves less than 1 ft. .FRI NIGHT...E winds 5 kt. Waves less than 1 ft. .SAT...E winds 5 kt. Waves less than 1 ft. .SAT NIGHT...SE winds 5 kt. Waves less than 1 ft. .SUN...SW winds 5 to 10 kt. Waves 1 ft or less. .MON...NE winds 5 to 10 kt...becoming SE. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ541-140800- Choptank River to Cambridge MD and the Little Choptank River- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...S winds 15 kt...becoming W 5 kt. Waves 1 ft. Scattered showers. Scattered tstms late this evening, then isolated tstms. .THU...NW winds 5 kt. Waves flat. A chance of showers and tstms. .THU NIGHT...NW winds around 5 kt. Waves flat. A chance of showers and tstms. .FRI...NE winds 5 kt. Waves less than 1 ft. .FRI NIGHT...E winds 5 kt. Waves less than 1 ft. .SAT...E winds 5 kt. Waves less than 1 ft. .SAT NIGHT...SE winds around 5 kt. Waves 1 ft. .SUN...SW winds 5 to 10 kt. Waves 1 ft or less. .MON...N winds 5 to 10 kt...becoming SE. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ542-140800- Patuxent River to Broomes Island MD- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...SW winds 5 kt. Waves less than 1 ft. Scattered showers. Scattered tstms late this evening, then isolated tstms. .THU...NW winds around 5 kt. Waves 1 ft. A chance of showers and tstms. Vsby 1 NM or less. .THU NIGHT...N winds around 5 kt. Waves 1 ft. A chance of showers and tstms. Vsby 1 NM or less. .FRI...NE winds 5 kt. Waves less than 1 ft. A chance of showers. .FRI NIGHT...E winds around 5 kt. Waves 1 ft. .SAT...E winds 5 kt. Waves less than 1 ft. .SAT NIGHT...SE winds around 5 kt. Waves 1 ft. .SUN...S winds around 5 kt. Waves 1 ft. .MON...NE winds 5 to 10 kt...becoming SE. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ534-140800- Chesapeake Bay from Drum Point to Smith Point- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...SW winds 10 kt. Waves 1 ft. Scattered showers. Scattered tstms late this evening, then isolated tstms. .THU...NW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. Vsby 1 NM or less. .THU NIGHT...NW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. .FRI...NE winds 5 kt. Waves less than 1 ft. .FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft. .SAT...E winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft. .SUN...S winds 5 to 10 kt. Waves 1 ft or less. .MON...NW winds 5 to 10 kt...becoming SE. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ543-140800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 1034 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...SW winds 10 kt. Waves 1 ft. Scattered showers. Scattered tstms late this evening, then isolated tstms. .THU...W winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. Vsby 1 NM or less. .THU NIGHT...NW winds 5 kt. Waves flat. A chance of showers and tstms. .FRI...NE winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft. .SAT...E winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft. .SUN...SW winds 5 to 10 kt. Waves 1 ft or less. .MON...NW winds 5 to 10 kt...becoming SE. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$