305
FZUS51 KLWX 150627
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 AM EDT WED JUL 15 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.
ANZ500-152000-
227 AM EDT WED JUL 15 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL SHIFT TO THE SOUTH THE SECOND HALF OF THE WEEK. A
WEAK COLD FRONT WILL DROP SOUTHWARD THURSDAY INTO FRIDAY, THEN A
STRONGER COLD FRONT WILL APPROACH FROM THE NORTH SATURDAY.
ANZ535-152000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
227 AM EDT WED JUL 15 2026
OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
W WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT.
THU
NW WINDS AROUND 5 KT. WAVES 1 FT. PATCHY SMOKE.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NE WINDS AROUND 5 KT. WAVES 1 FT.
FRI NIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS WITH A CHANCE OF TSTMS.
SUN...NW WINDS 5 TO 10 KT
BECOMING E. WAVES 1 FT. A CHANCE OF
SHOWERS AND TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-152000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
227 AM EDT WED JUL 15 2026
OVERNIGHT
SW WINDS 10 KT. WAVES 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. PATCHY SMOKE.
THU NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT. PATCHY SMOKE.
FRI
NE WINDS AROUND 5 KT. WAVES 1 FT.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN
NW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-152000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
227 AM EDT WED JUL 15 2026
OVERNIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
THU
W WINDS AROUND 5 KT. WAVES 1 FT. PATCHY SMOKE.
THU NIGHT...S WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-152000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
227 AM EDT WED JUL 15 2026
OVERNIGHT
W WINDS 10 KT. WAVES 1 FT.
WED
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT...NW WINDS 5 TO 10 KT
BECOMING N LATE. WAVES 1 FT.
PATCHY SMOKE.
THU...N WINDS AROUND 5 KT
BECOMING SW IN THE AFTERNOON. WAVES
1 FT. PATCHY SMOKE.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. PATCHY SMOKE.
FRI
N WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SAT...S WINDS 5 TO 10 KT
BECOMING W AFTER MIDNIGHT. WAVES 1 FT.
SHOWERS WITH TSTMS LIKELY.
SUN...NW WINDS 5 TO 10 KT
BECOMING NE AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-152000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
227 AM EDT WED JUL 15 2026
OVERNIGHT
W WINDS 10 KT. WAVES 1 TO 2 FT.
WED
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT...W WINDS 5 TO 10 KT
BECOMING N LATE. WAVES 1 FT.
PATCHY SMOKE.
THU...N WINDS AROUND 5 KT
BECOMING S IN THE AFTERNOON. WAVES
1 FT. PATCHY SMOKE.
THU NIGHT...W WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT. PATCHY SMOKE.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SAT...S WINDS 5 TO 10 KT
BECOMING W AFTER MIDNIGHT. WAVES 1 FT.
SHOWERS WITH TSTMS LIKELY.
SUN...NW WINDS 5 TO 10 KT
BECOMING E AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-152000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
227 AM EDT WED JUL 15 2026
OVERNIGHT
W WINDS 10 KT. WAVES 1 FT.
WED
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. PATCHY SMOKE.
THU
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. PATCHY SMOKE.
THU NIGHT
NW WINDS 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES FLAT.
FRI NIGHT
SE WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
SAT...S WINDS 5 TO 10 KT
BECOMING W. WAVES 1 FT OR LESS. SHOWERS
WITH TSTMS LIKELY.
SUN
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-152000-
CHESTER RIVER TO QUEENSTOWN MD-
227 AM EDT WED JUL 15 2026
OVERNIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
WED
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT. PATCHY SMOKE.
THU
W WINDS AROUND 5 KT. WAVES 1 FT. PATCHY SMOKE.
THU NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT. PATCHY SMOKE.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
FRI NIGHT
SE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS
AND TSTMS.
SAT...S WINDS 5 TO 10 KT
BECOMING W AFTER MIDNIGHT. WAVES 1 FT. A
CHANCE OF TSTMS. SHOWERS.
SUN...NW WINDS 5 TO 10 KT
BECOMING E AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-152000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
227 AM EDT WED JUL 15 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
OVERNIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT...W WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT.
THU...N WINDS AROUND 5 KT
BECOMING S IN THE AFTERNOON. WAVES
1 FT. PATCHY SMOKE.
THU NIGHT...SW WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT. PATCHY SMOKE.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SAT...S WINDS 5 TO 10 KT
BECOMING W AFTER MIDNIGHT. WAVES 1 FT. A
CHANCE OF TSTMS. SHOWERS.
SUN...NW WINDS 5 TO 10 KT
BECOMING E AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-152000-
EASTERN BAY-
227 AM EDT WED JUL 15 2026
OVERNIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT...W WINDS 5 TO 10 KT
BECOMING N LATE. WAVES 1 FT.
PATCHY SMOKE.
THU
W WINDS AROUND 5 KT. WAVES 1 FT. PATCHY SMOKE.
THU NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT. PATCHY SMOKE.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS.
SAT...S WINDS 5 TO 10 KT
BECOMING W AFTER MIDNIGHT. WAVES 1 FT OR
LESS. A CHANCE OF TSTMS. SHOWERS.
SUN...NW WINDS 5 TO 10 KT
BECOMING E AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-152000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
227 AM EDT WED JUL 15 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
OVERNIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU...N WINDS AROUND 5 KT
BECOMING S IN THE AFTERNOON. WAVES
1 FT. PATCHY SMOKE.
THU NIGHT...SW WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE MORNING, THEN SHOWERS WITH A CHANCE OF TSTMS.
SUN...NW WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-152000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
227 AM EDT WED JUL 15 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
OVERNIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED...W WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT IN THE
AFTERNOON. WAVES 1 TO 2 FT.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU...N WINDS AROUND 5 KT
BECOMING SW IN THE AFTERNOON. WAVES
1 FT. PATCHY SMOKE.
THU NIGHT...SW WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS. A CHANCE
OF SHOWERS IN THE MORNING, THEN SHOWERS.
SUN...NW WINDS 5 TO 10 KT
BECOMING E AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-152000-
PATUXENT RIVER TO BROOMES ISLAND MD-
227 AM EDT WED JUL 15 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
OVERNIGHT
SW WINDS 10 KT. WAVES 1 FT.
WED
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU...N WINDS AROUND 5 KT
BECOMING SW IN THE AFTERNOON. WAVES
1 FT. PATCHY SMOKE.
THU NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-152000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
227 AM EDT WED JUL 15 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
OVERNIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED...W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING SW 5 TO
10 KT IN THE AFTERNOON. WAVES 1 TO 2 FT.
WED NIGHT...SW WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT LATE.
WAVES 2 FT.
THU...NW WINDS AROUND 5 KT
BECOMING S IN THE AFTERNOON. WAVES
1 FT.
THU NIGHT...S WINDS 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN...NW WINDS 10 TO 15 KT
BECOMING S 5 TO 10 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS AND TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-152000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
227 AM EDT WED JUL 15 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
OVERNIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
WED NIGHT...SW WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT LATE.
WAVES 1 FT.
THU...NW WINDS 5 TO 10 KT
BECOMING SW IN THE AFTERNOON. WAVES
1 FT.
THU NIGHT...S WINDS 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
FRI...NE WINDS 5 TO 10 KT
BECOMING W IN THE AFTERNOON. WAVES 1 FT
OR LESS.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN...W WINDS 10 TO 15 KT
BECOMING S 5 TO 10 KT. WAVES 1 FT. A
CHANCE OF SHOWERS. A CHANCE OF TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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