210
FZUS51 KLWX 170627
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 AM EDT WED JUN 17 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.
ANZ500-172000-
227 AM EDT WED JUN 17 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A WARM FRONT WILL SLIDE NORTHEAST ACROSS THE CHESAPEAKE BAY EARLY
THIS MORNING BEFORE A POTENT COLD FRONT PUSHES THROUGH THE REGION
THURSDAY INTO FRIDAY MORNING. ERSTORMS MOVE OVER THE WATERS. SMALL
CRAFT ADVISORIES MAY BE NEEDED AGAIN TODAY INTO THURSDAY WITH THE
NEXT LOW PRESSURE SYSTEM AND COLD FRONT.
ANZ535-172000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
227 AM EDT WED JUN 17 2026
OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT.
THU
SW WINDS 10 TO 15 KT WITH GUSTS TO 30 KT. WAVES 1 FT.
THU NIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT.
SAT...NW WINDS 10 TO 15 KT
DIMINISHING TO AROUND 5 KT AFTER
MIDNIGHT. WAVES 1 FT.
SUN...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-172000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
227 AM EDT WED JUN 17 2026
OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE
EVENING AND OVERNIGHT. WAVES 1 FT.
THU
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...SW WINDS AROUND 5 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-172000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
227 AM EDT WED JUN 17 2026
OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 10 TO 15 KT. WAVES 2 FT.
THU
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...NW WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT OR LESS. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-172000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
227 AM EDT WED JUN 17 2026
OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
WED
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
SW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 FT.
SUN...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-172000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
227 AM EDT WED JUN 17 2026
OVERNIGHT
S WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 15 TO 20 KT. WAVES 2 FT.
THU
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A
CHANCE OF SHOWERS AND TSTMS.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SUN...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-172000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
227 AM EDT WED JUN 17 2026
OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
THU NIGHT...W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
DIMINISHING
TO 5 KT AFTER MIDNIGHT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 FT OR LESS.
SUN...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS. A CHANCE
OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-172000-
CHESTER RIVER TO QUEENSTOWN MD-
227 AM EDT WED JUN 17 2026
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED
S WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 1 TO
2 FT.
THU
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
THU NIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SUN...SW WINDS 5 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-172000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
227 AM EDT WED JUN 17 2026
OVERNIGHT
SE WINDS 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
WED
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 3 FT.
THU
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A
CHANCE OF SHOWERS AND TSTMS.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SUN...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-172000-
EASTERN BAY-
227 AM EDT WED JUN 17 2026
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
THU
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
ANZ533-172000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
227 AM EDT WED JUN 17 2026
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SUN...NW WINDS 5 KT
BECOMING S. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-172000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
227 AM EDT WED JUN 17 2026
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT. SCATTERED SHOWERS.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-172000-
PATUXENT RIVER TO BROOMES ISLAND MD-
227 AM EDT WED JUN 17 2026
OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
THU NIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...W WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-172000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
227 AM EDT WED JUN 17 2026
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 FT.
THU
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SUN...NW WINDS 5 TO 10 KT
BECOMING S 10 TO 15 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-172000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
227 AM EDT WED JUN 17 2026
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT. SCATTERED SHOWERS WITH A
SLIGHT CHANCE OF TSTMS.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
FRI NIGHT
NW WINDS 10 TO 15 KT. WAVES 1 FT.
SAT
NW WINDS 10 TO 15 KT. WAVES 1 FT.
SUN...W WINDS 5 TO 10 KT
BECOMING S 10 TO 15 KT. WAVES 1 TO 2 FT.
A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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