989
FZUS51 KLWX 132058
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
458 PM EDT WED MAY 13 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.
ANZ500-140800-
458 PM EDT WED MAY 13 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A COLD FRONT WILL CROSS THE WATERS TONIGHT. THE ASSOCIATED LOW WILL
LINGER OVER NEW ENGLAND THURSDAY BEFORE HIGH PRESSURE BUILDS IN FROM
THE WEST FRIDAY. THE HIGH WILL THEN SLIDE OFF THE COAST AND REMAIN
THERE THROUGH THE WEEKEND. SMALL CRAFT ADVISORIES MAY BE NEEDED AT
TIMES THURSDAY THROUGH FRIDAY.
ANZ535-140800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TONIGHT...S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
BECOMING NW
LATE. WAVES 1 FT. SHOWERS WITH A CHANCE OF TSTMS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-140800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TONIGHT...S WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT.
SHOWERS WITH A CHANCE OF TSTMS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
NW WINDS 10 TO 15 KT. WAVES 1 FT.
FRI NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-140800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT THURSDAY
REST OF THIS AFTERNOON
S WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT.
TONIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING W
5 TO 10 KT AFTER MIDNIGHT. WAVES 3 FT...SUBSIDING TO 1 FT AFTER
MIDNIGHT. SHOWERS LIKELY.
THU
NW WINDS 10 TO 15 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...SW WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT OR LESS.
ANZ530-140800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT THURSDAY
REST OF THIS AFTERNOON
S WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
2 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING SW
5 TO 10 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT. SHOWERS WITH A CHANCE OF
TSTMS.
THU
NW WINDS 10 TO 15 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN
SW WINDS AROUND 5 KT. WAVES FLAT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-140800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT THURSDAY
REST OF THIS AFTERNOON
S WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
DIMINISHING TO
5 TO 10 KT AFTER MIDNIGHT, THEN BECOMING NW LATE. WAVES 3 FT...
SUBSIDING TO 1 FT AFTER MIDNIGHT. SHOWERS WITH A CHANCE OF TSTMS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-140800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT THURSDAY
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TONIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING W
5 TO 10 KT AFTER MIDNIGHT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN
SW WINDS AROUND 5 KT. WAVES FLAT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-140800-
CHESTER RIVER TO QUEENSTOWN MD-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT THURSDAY
REST OF THIS AFTERNOON
S WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
2 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING SW
5 TO 10 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT. SHOWERS WITH A CHANCE OF
TSTMS.
THU
NW WINDS 10 TO 15 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-140800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT THURSDAY
REST OF THIS AFTERNOON
S WINDS 20 KT WITH GUSTS TO 30 KT. WAVES
4 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
DIMINISHING TO
5 TO 10 KT AFTER MIDNIGHT, THEN BECOMING NW LATE. WAVES 4 FT...
SUBSIDING TO 2 FT AFTER MIDNIGHT. SHOWERS WITH A CHANCE OF TSTMS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-140800-
EASTERN BAY-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT THURSDAY
REST OF THIS AFTERNOON
S WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
TONIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING SW
5 TO 10 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT. SHOWERS WITH A CHANCE OF
TSTMS.
THU
NW WINDS 10 TO 15 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
FRI NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-140800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT THURSDAY
REST OF THIS AFTERNOON
S WINDS 25 KT WITH GUSTS TO 30 KT. WAVES
4 FT.
TONIGHT...S WINDS 20 TO 25 KT WITH GUSTS TO 30 KT
BECOMING SE
10 TO 15 KT WITH GUSTS TO 20 KT LATE IN THE EVENING, THEN BECOMING W
5 TO 10 KT AFTER MIDNIGHT. WAVES 4 FT...SUBSIDING TO 2 FT AFTER
MIDNIGHT. SHOWERS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI...NW WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. WAVES 2 FT.
FRI NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ541-140800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT THURSDAY
REST OF THIS AFTERNOON
S WINDS 25 KT WITH GUSTS TO 30 KT. WAVES
3 FT.
TONIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING W
5 TO 10 KT AFTER MIDNIGHT. WAVES 3 FT...SUBSIDING TO 1 FT AFTER
MIDNIGHT. SHOWERS LIKELY.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ542-140800-
PATUXENT RIVER TO BROOMES ISLAND MD-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT THURSDAY
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 25 KT. WAVES
1 FT.
TONIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
5 KT AFTER MIDNIGHT. WAVES 1 FT. SHOWERS LIKELY.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 10 KT. WAVES 1 FT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ534-140800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT THURSDAY
REST OF THIS AFTERNOON
S WINDS 25 KT WITH GUSTS TO 30 KT. WAVES
4 FT.
TONIGHT...S WINDS 20 TO 25 KT WITH GUSTS TO 30 KT
BECOMING SW
10 TO 15 KT AFTER MIDNIGHT, THEN BECOMING NW 5 TO 10 KT LATE. WAVES
4 FT...SUBSIDING TO 2 FT AFTER MIDNIGHT. SHOWERS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
FRI
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
FRI NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT.
SAT
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
ANZ543-140800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
458 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT THURSDAY
REST OF THIS AFTERNOON
S WINDS 20 KT WITH GUSTS TO 30 KT. WAVES
3 FT.
TONIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT
BECOMING SW
10 TO 15 KT AFTER MIDNIGHT, THEN BECOMING NW 5 TO 10 KT LATE. WAVES
2 TO 3 FT. SHOWERS LIKELY.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
THU NIGHT
NW WINDS 15 TO 20 KT. WAVES 2 FT.
FRI
NW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
FRI NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT.
SAT
S WINDS 10 TO 15 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
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