(1/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 8:29 AM America/New_York.
Valid through 9/21/2026 4:00 PM America/New_York.
fzus51 klwx 211229
cwflwx
expires:202609212000;;817595
coastal waters forecast
national weather service baltimore md/washington dc
829 am edt mon sep 21 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.
anz531-212000-
chesapeake bay from pooles island to sandy point-
829 am edt mon sep 21 2026
...small craft advisory in effect until noon edt today...
...small craft advisory in effect from 8 pm edt this evening through
late tuesday night...
.today...ne winds 10 to 15 kt with gusts to 20 kt. waves 1 to 2 ft.
scattered showers this afternoon.
.tonight...ne winds 15 to 20 kt with gusts to 25 kt. waves 2 to
3 ft. showers likely.
.tue...ne winds 20 to 25 kt with gusts to 30 kt. waves 3 ft.
showers.
.tue night...ne winds 20 to 25 kt with gusts to 30 kt. waves 3 ft.
showers likely.
.wed...ne winds 20 to 25 kt with gusts to 30 kt. waves 3 ft. a
chance of showers.
.wed night...ne winds 20 to 25 kt with gusts to 30 kt. waves 3 ft.
.thu...ne winds 20 to 25 kt. waves 3 ft.
.fri...n winds 20 to 25 kt. waves 4 ft. a chance of showers.
$$
(2/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 8:29 AM America/New_York.
Valid through 9/21/2026 4:00 PM America/New_York.
fzus51 klwx 211229
cwflwx
expires:202609212000;;817598
coastal waters forecast
national weather service baltimore md/washington dc
829 am edt mon sep 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz532-212000-
chesapeake bay from sandy point to north beach-
829 am edt mon sep 21 2026
...small craft advisory in effect until noon edt today...
...small craft advisory in effect from 8 pm edt this evening through
late tuesday night...
.today...ne winds 10 to 15 kt with gusts to 20 kt. waves 1 to 2 ft.
scattered showers this afternoon.
.tonight...ne winds 15 to 20 kt. waves 2 ft. showers.
.tue...ne winds 20 to 25 kt. gusts up to 25 kt... increasing to
30 kt late. waves 3 ft. showers.
.tue night...ne winds 20 to 25 kt with gusts to 30 kt. waves 4 ft.
showers likely.
.wed...ne winds 20 to 25 kt with gusts to 30 kt. waves 4 ft. a
chance of showers.
.wed night...ne winds 20 to 25 kt with gusts to 30 kt. waves 4 ft.
.thu...ne winds 20 to 25 kt. waves 4 ft.
.fri...n winds 25 to 30 kt. waves 4 ft. a chance of showers.
$$
(3/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 8:29 AM America/New_York.
Valid through 9/21/2026 4:00 PM America/New_York.
fzus51 klwx 211229
cwflwx
expires:202609212000;;817600
coastal waters forecast
national weather service baltimore md/washington dc
829 am edt mon sep 21 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.
anz533-212000-
chesapeake bay from north beach to drum point-
829 am edt mon sep 21 2026
...small craft advisory in effect until noon edt today...
...small craft advisory in effect from 8 pm edt this evening through
late tuesday night...
.today...ne winds 10 to 15 kt with gusts to 20 kt. waves 2 ft.
isolated showers this afternoon.
.tonight...e winds 15 to 20 kt. waves 2 ft. showers likely.
.tue...ne winds 20 to 25 kt. gusts up to 25 kt... increasing to
30 kt in the afternoon. waves 3 ft. showers with a chance of tstms.
.tue night...ne winds 25 to 30 kt. waves 4 ft. showers likely with a
chance of tstms.
.wed...ne winds 25 to 30 kt. waves 4 ft. a chance of showers.
.wed night...ne winds 25 to 30 kt. waves 5 ft.
.thu...ne winds 25 to 30 kt. waves 4 ft.
.fri...n winds 25 to 30 kt. waves 5 ft. a chance of showers.
winds and waves higher and visibilities lower in and near tstms.
$$
(4/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 8:29 AM America/New_York.
Valid through 9/21/2026 4:00 PM America/New_York.
fzus51 klwx 211229
cwflwx
expires:202609212000;;817603
coastal waters forecast
national weather service baltimore md/washington dc
829 am edt mon sep 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz534-212000-
chesapeake bay from drum point to smith point-
829 am edt mon sep 21 2026
...small craft advisory in effect until noon edt today...
...small craft advisory in effect from 8 pm edt this evening through
late tuesday night...
.today...ne winds 10 to 15 kt with gusts to 20 kt. waves 1 to 2 ft.
.tonight...e winds 15 kt with gusts to 20 kt. waves 2 ft. a chance
of showers.
.tue...ne winds 20 to 25 kt with gusts to 30 kt. waves 3 ft. showers
with a chance of tstms.
.tue night...ne winds 20 to 25 kt with gusts to 30 kt. waves 5 ft.
showers likely with a chance of tstms.
.wed...ne winds 25 to 30 kt. waves 5 ft. showers likely.
.wed night...ne winds 25 to 30 kt. waves 5 ft. a chance of showers.
.thu...ne winds 25 to 30 kt. waves 5 ft. a chance of showers.
.fri...n winds 25 to 30 kt. waves 5 ft. a chance of showers through
the night.
winds and waves higher and visibilities lower in and near tstms.
$$
(5/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 8:29 AM America/New_York.
Valid through 9/21/2026 4:00 PM America/New_York.
fzus51 klwx 211229
cwflwx
expires:202609212000;;817591
coastal waters forecast
national weather service baltimore md/washington dc
829 am edt mon sep 21 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.
anz535-212000-
tidal potomac from key bridge to indian head-
829 am edt mon sep 21 2026
...small craft advisory in effect from tuesday morning through late
tuesday night...
.today...ne winds 5 to 10 kt. waves 1 ft. isolated showers this
afternoon.
.tonight...ne winds 5 to 10 kt. waves 1 ft. showers with a chance of
tstms.
.tue...ne winds 10 to 15 kt. gusts up to 25 kt... increasing to
30 kt late. waves 1 ft. showers with a chance of tstms.
.tue night...ne winds 10 to 15 kt. gusts up to 30 kt...diminishing
to 20 kt after midnight. waves 1 ft. showers.
.wed...ne winds 10 to 15 kt with gusts to 25 kt. waves 1 ft. a
chance of showers.
.wed night...ne winds 10 to 15 kt with gusts to 25 kt. waves 1 ft. a
chance of showers.
.thu...n winds 10 to 15 kt. waves 1 ft. a chance of showers.
.fri...n winds 10 to 15 kt. waves 1 to 2 ft.
winds and waves higher and visibilities lower in and near tstms.
$$
(6/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 8:29 AM America/New_York.
Valid through 9/21/2026 4:00 PM America/New_York.
fzus51 klwx 211229
cwflwx
expires:202609212000;;817592
coastal waters forecast
national weather service baltimore md/washington dc
829 am edt mon sep 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz536-212000-
tidal potomac from indian head to cobb island-
829 am edt mon sep 21 2026
...small craft advisory in effect from tuesday morning through late
tuesday night...
.today...ne winds 10 kt. waves 1 ft. isolated showers this
afternoon.
.tonight...ne winds 5 to 10 kt. waves 1 ft. a chance of showers.
.tue...ne winds 15 to 20 kt with gusts to 25 kt. waves 1 to 2 ft.
showers with a chance of tstms.
.tue night...ne winds 15 to 20 kt with gusts to 30 kt. waves 2 ft.
showers with a chance of tstms.
.wed...ne winds 15 to 20 kt with gusts to 25 kt. waves 2 ft. a
chance of showers.
.wed night...ne winds 15 to 20 kt with gusts to 30 kt. waves 2 ft. a
chance of showers.
.thu...n winds 15 to 20 kt. waves 1 to 2 ft. a chance of showers.
.fri...n winds 15 to 20 kt. waves 2 ft.
winds and waves higher and visibilities lower in and near tstms.
$$
(7/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 8:29 AM America/New_York.
Valid through 9/21/2026 4:00 PM America/New_York.
fzus51 klwx 211229
cwflwx
expires:202609212000;;817593
coastal waters forecast
national weather service baltimore md/washington dc
829 am edt mon sep 21 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.
anz537-212000-
tidal potomac from cobb island to smith point-
829 am edt mon sep 21 2026
...small craft advisory in effect from 8 pm edt this evening through
late tuesday night...
.today...ne winds 10 kt. waves 1 to 2 ft.
.tonight...e winds 10 to 15 kt with gusts to 20 kt. waves 2 ft. a
chance of showers and tstms.
.tue...ne winds 20 to 25 kt with gusts to 30 kt. waves 3 ft. showers
with a chance of tstms.
.tue night...ne winds 20 to 25 kt with gusts to 30 kt. waves 5 ft.
showers with a chance of tstms.
.wed...ne winds 20 to 25 kt with gusts to 30 kt. waves 5 ft. showers
likely.
.wed night...ne winds 25 to 30 kt. waves 5 ft. a chance of showers.
.thu...ne winds 20 to 25 kt. waves 4 ft. a chance of showers.
.fri...n winds 20 to 25 kt. waves 4 ft.
winds and waves higher and visibilities lower in and near tstms.
$$
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