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(1/7)
Latest Coastal Waters Forecast by KLWX
Issued 7/12/2026 7:58 PM America/New_York.
Valid through 7/13/2026 4:00 AM America/New_York.
fzus51 klwx 122358
cwflwx
expires:202607130800;;871427
coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt sun jul 12 2026
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.
anz531-130800-
chesapeake bay from pooles island to sandy point-
757 pm edt sun jul 12 2026
.tonight...se winds 10 to 15 kt...diminishing to 5 kt late. waves
1 to 2 ft.
.mon...se winds 5 kt. waves less than 1 ft.
.mon night...s winds 5 to 10 kt. waves 1 ft.
.tue...sw winds 5 to 10 kt. waves 1 ft or less.
.tue night...sw winds 10 kt. waves 1 ft.
.wed...sw winds 5 to 10 kt. waves 1 ft.
.wed night...sw winds 10 kt...becoming nw after midnight. waves
1 ft.
.thu...nw winds 5 to 10 kt. waves 1 ft.
.fri...nw winds 5 to 10 kt. waves 1 ft. a chance of showers through
the night.
$$
(2/7)
Latest Coastal Waters Forecast by KLWX
Issued 7/12/2026 7:58 PM America/New_York.
Valid through 7/13/2026 4:00 AM America/New_York.
fzus51 klwx 122358
cwflwx
expires:202607130800;;871430
coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt sun jul 12 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz532-130800-
chesapeake bay from sandy point to north beach-
757 pm edt sun jul 12 2026
...small craft advisory in effect until midnight edt tonight...
.tonight...se winds 10 to 15 kt with gusts to 20 kt. waves 1 to
2 ft.
.mon...se winds 5 to 10 kt. waves 1 ft.
.mon night...s winds 5 to 10 kt. waves 1 ft.
.tue...sw winds 5 to 10 kt. waves 1 ft or less.
.tue night...sw winds 10 kt. waves 1 ft.
.wed...sw winds 5 to 10 kt. waves 1 ft.
.wed night...w winds 5 to 10 kt. waves 1 to 2 ft.
.thu...nw winds 5 to 10 kt. waves 1 ft.
.fri...n winds 5 to 10 kt...becoming e after midnight. waves 1 ft. a
chance of showers through the night.
$$
(3/7)
Latest Coastal Waters Forecast by KLWX
Issued 7/12/2026 7:58 PM America/New_York.
Valid through 7/13/2026 4:00 AM America/New_York.
fzus51 klwx 122358
cwflwx
expires:202607130800;;871432
coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt sun jul 12 2026
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.
anz533-130800-
chesapeake bay from north beach to drum point-
757 pm edt sun jul 12 2026
...small craft advisory in effect until midnight edt tonight...
.tonight...se winds 10 to 15 kt with gusts to 20 kt. waves 2 ft.
.mon...se winds 5 to 10 kt. waves 1 ft.
.mon night...s winds 5 to 10 kt. waves 1 ft.
.tue...nw winds around 5 kt...becoming s in the afternoon. waves
1 ft or less.
.tue night...sw winds 10 kt. waves 1 ft.
.wed...sw winds 5 to 10 kt. waves 1 ft.
.wed night...w winds 5 to 10 kt. waves 1 ft.
.thu...nw winds 5 to 10 kt. waves 1 ft.
.fri...n winds 5 to 10 kt...becoming se. waves 1 ft. a chance of
showers through the night.
$$
(4/7)
Latest Coastal Waters Forecast by KLWX
Issued 7/12/2026 7:58 PM America/New_York.
Valid through 7/13/2026 4:00 AM America/New_York.
fzus51 klwx 122358
cwflwx
expires:202607130800;;871435
coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt sun jul 12 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz534-130800-
chesapeake bay from drum point to smith point-
757 pm edt sun jul 12 2026
...small craft advisory in effect until 6 am edt monday...
.tonight...e winds 15 kt with gusts to 20 kt. waves 2 to 3 ft.
.mon...e winds 10 to 15 kt. waves 2 ft.
.mon night...se winds 5 to 10 kt. waves 1 to 2 ft.
.tue...se winds 5 to 10 kt. waves 1 ft.
.tue night...sw winds 5 to 10 kt. waves 1 ft.
.wed...sw winds 5 to 10 kt. waves 1 ft.
.wed night...sw winds 10 to 15 kt...becoming w after midnight. waves
2 ft.
.thu...w winds 5 to 10 kt...becoming nw. waves 1 ft.
.fri...n winds 5 to 10 kt...becoming s. waves 1 ft.
$$
(5/7)
Latest Coastal Waters Forecast by KLWX
Issued 7/12/2026 7:58 PM America/New_York.
Valid through 7/13/2026 4:00 AM America/New_York.
fzus51 klwx 122358
cwflwx
expires:202607130800;;871423
coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt sun jul 12 2026
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.
anz535-130800-
tidal potomac from key bridge to indian head-
757 pm edt sun jul 12 2026
.tonight...e winds 5 kt. waves less than 1 ft.
.mon...e winds around 5 kt. waves 1 ft.
.mon night...s winds around 5 kt. waves 1 ft or less.
.tue...sw winds around 5 kt. waves 1 ft or less.
.tue night...sw winds 5 kt. waves less than 1 ft.
.wed...w winds around 5 kt. waves 1 ft.
.wed night...w winds 5 to 10 kt. waves 1 ft.
.thu...nw winds around 5 kt. waves 1 ft.
.fri...n winds 5 to 10 kt. waves 1 ft. a chance of showers through
the night.
$$
(6/7)
Latest Coastal Waters Forecast by KLWX
Issued 7/12/2026 7:58 PM America/New_York.
Valid through 7/13/2026 4:00 AM America/New_York.
fzus51 klwx 122358
cwflwx
expires:202607130800;;871424
coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt sun jul 12 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz536-130800-
tidal potomac from indian head to cobb island-
757 pm edt sun jul 12 2026
...small craft advisory in effect until midnight edt tonight...
.tonight...se winds 10 to 15 kt with gusts to 20 kt... becoming e
5 kt late. waves 1 ft.
.mon...e winds 5 to 10 kt. waves 1 ft.
.mon night...se winds 5 to 10 kt until early morning... becoming
light. waves 1 ft or less.
.tue...e winds around 5 kt. waves 1 ft or less.
.tue night...sw winds around 5 kt. waves 1 ft.
.wed...sw winds 5 to 10 kt. waves 1 ft.
.wed night...w winds 5 to 10 kt. waves 1 ft.
.thu...nw winds around 5 kt. waves 1 ft.
.fri...nw winds 5 kt. waves less than 1 ft.
$$
(7/7)
Latest Coastal Waters Forecast by KLWX
Issued 7/12/2026 7:58 PM America/New_York.
Valid through 7/13/2026 4:00 AM America/New_York.
fzus51 klwx 122358
cwflwx
expires:202607130800;;871425
coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt sun jul 12 2026
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.
anz537-130800-
tidal potomac from cobb island to smith point-
757 pm edt sun jul 12 2026
...small craft advisory in effect until 6 am edt monday...
.tonight...e winds 15 kt with gusts to 20 kt. waves 2 to 3 ft.
.mon...e winds 10 kt. waves 2 ft.
.mon night...se winds 5 to 10 kt. waves 1 ft.
.tue...e winds around 5 kt. waves flat.
.tue night...sw winds 5 to 10 kt. waves 1 ft.
.wed...sw winds 5 to 10 kt. waves 1 ft.
.wed night...sw winds 5 to 10 kt. waves 1 ft.
.thu...nw winds 5 kt. waves less than 1 ft.
.fri...n winds 5 kt...becoming se. waves 1 ft.
$$
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