208
FZUS51 KLWX 182037
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
437 PM EDT FRI JUL 18 2025
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.
ANZ500-190800-
437 PM EDT FRI JUL 18 2025
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A FRONT STALLS ACROSS THE AREA TODAY, THEN RETURNS NORTH AS A WARM
FRONT ON SATURDAY. A STRONGER COLD FRONT MOVES THROUGH THE AREA
SUNDAY NIGHT. CANADIAN HIGH PRESSURE BUILDS TO THE NORTH INTO EARLY
NEXT WEEK. DAILY SHOWER AND THUNDERSTORM CHANCES CONTINUE THROUGH
THE WEEKEND, WITH ANY STRONGER THUNDERSTORM POSING A RISK TO
MARINERS. SMALL CRAFT ADVISORIES MAY BE NEEDED SUNDAY NIGHT INTO
MONDAY MORNING.
ANZ535-190800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SCATTERED SHOWERS AND TSTMS. VSBY 1 NM OR LESS.
TONIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT
S WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS. PATCHY FOG. VSBY 1 TO 3 NM.
SAT NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY
WITH A CHANCE OF TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
MON
N WINDS AROUND 5 KT. WAVES 1 FT.
TUE
E WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-190800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SCATTERED SHOWERS AND TSTMS. VSBY 1 NM OR LESS.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
MON
NE WINDS AROUND 5 KT. WAVES 1 FT.
TUE
E WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-190800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SCATTERED SHOWERS AND TSTMS.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY
WITH A CHANCE OF TSTMS. VSBY 1 NM OR LESS.
SAT
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...E WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-190800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
NW WINDS 5 KT. WAVES FLAT. ISOLATED
SHOWERS.
TONIGHT
NE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
SAT
E WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND TSTMS. VSBY
1 NM OR LESS.
SAT NIGHT
S WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
E WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-190800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
NE WINDS 5 KT. WAVES FLAT. ISOLATED
SHOWERS AND TSTMS.
TONIGHT
E WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS. VSBY 1 NM OR LESS.
SAT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS. VSBY 1 NM OR LESS.
SAT NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH
A CHANCE OF TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...E WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-190800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
SE WINDS 5 KT. WAVES FLAT. ISOLATED
SHOWERS AND TSTMS.
TONIGHT
E WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS. VSBY 1 NM OR LESS.
SAT
E WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
S WINDS AROUND 5 KT. WAVES FLAT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS.
SUN NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
MON
N WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-190800-
CHESTER RIVER TO QUEENSTOWN MD-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
N WINDS 5 KT. WAVES FLAT.
TONIGHT
E WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS. VSBY 1 NM OR LESS.
SAT
S WINDS 5 KT. WAVES FLAT. SHOWERS LIKELY WITH A CHANCE OF
TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT NIGHT
S WINDS 5 KT. WAVES FLAT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
E WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-190800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
NE WINDS 5 KT. WAVES FLAT. ISOLATED
SHOWERS AND TSTMS.
TONIGHT
E WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND TSTMS.
VSBY 1 NM OR LESS.
SAT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH
A CHANCE OF TSTMS.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-190800-
EASTERN BAY-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
N WINDS 5 KT. WAVES FLAT.
TONIGHT
E WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS. VSBY 1 NM OR LESS.
SAT
S WINDS 5 KT. WAVES FLAT. SHOWERS LIKELY WITH A CHANCE OF
TSTMS. VSBY 1 NM OR LESS.
SAT NIGHT
S WINDS 5 KT. WAVES FLAT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
E WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-190800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
ISOLATED SHOWERS AND TSTMS.
TONIGHT
S WINDS 5 KT. WAVES FLAT. SHOWERS LIKELY WITH A CHANCE OF
TSTMS. VSBY 1 NM OR LESS.
SAT
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH
A CHANCE OF TSTMS.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...E WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-190800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
N WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS. VSBY 1 NM OR LESS.
SAT
S WINDS 5 KT. WAVES FLAT. SHOWERS LIKELY WITH A CHANCE OF
TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH
A CHANCE OF TSTMS.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...E WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT
OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-190800-
PATUXENT RIVER TO BROOMES ISLAND MD-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
ISOLATED SHOWERS AND TSTMS.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SAT
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS. PATCHY FOG.
SAT NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS AND TSTMS
LIKELY.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
E WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-190800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
N WINDS 5 KT. WAVES LESS THAN 1 FT.
ISOLATED SHOWERS AND TSTMS.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SAT
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
MON
NE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
TUE
E WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-190800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
437 PM EDT FRI JUL 18 2025
REST OF THIS AFTERNOON
NW WINDS 5 KT. WAVES FLAT. ISOLATED
SHOWERS AND TSTMS.
TONIGHT
S WINDS 5 KT. WAVES FLAT. SHOWERS LIKELY WITH A CHANCE OF
TSTMS.
SAT
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS. PATCHY FOG.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
E WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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