599
FZUS51 KLWX 071828
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
228 PM EDT FRI AUG 7 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.
ANZ500-080800-
228 PM EDT FRI AUG 7 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL BE PERSISTENT OFF THE EAST COAST INTO EARLY NEXT
WEEK. SHOWER AND THUNDERSTORM CHANCES CONTINUE THROUGH SATURDAY
AFTERNOON, BEFORE TAKING A BRIEF RESPITE SUNDAY INTO MONDAY. DAILY
SHOWERS AND STORM RETURN TUESDAY THROUGH MUCH OF NEXT WEEK. GUSTY
WINDS AND FREQUENT CLOUD TO GROUND LIGHTNING WILL BE THE PRIMARY
THREATS WITH ANY STORMS. SPECIAL MARINE WARNINGS WILL BE A
POSSIBILITY EACH DAY, WITH THE HIGHEST CHANCES FURTHEST NORTH.
HOWEVER, ANYWHERE ON THE WATERS WILL HAVE A CHANCE AT STORMS. SMALL
CRAFT ADVISORIES MAY BE NEEDED AT TIMES THROUGH THE WEEKEND DUE TO
PERIODS OF SOUTHERLY CHANNELING.
ANZ535-080800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
228 PM EDT FRI AUG 7 2026
...SEVERE THUNDERSTORM WATCH 540 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...
THIS AFTERNOON
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS
AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
MON
W WINDS AROUND 5 KT. WAVES 1 FT.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS THROUGH THE
NIGHT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-080800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
228 PM EDT FRI AUG 7 2026
THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT. ISOLATED SHOWERS AND
TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
MON
W WINDS AROUND 5 KT. WAVES 1 FT.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS IN THE
AFTERNOON. A CHANCE OF SHOWERS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-080800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
228 PM EDT FRI AUG 7 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
MON
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-080800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
228 PM EDT FRI AUG 7 2026
...SEVERE THUNDERSTORM WATCH 540 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...
THIS AFTERNOON
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS
AND TSTMS.
TONIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. NUMEROUS SHOWERS AND
TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
MON
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS
THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-080800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
228 PM EDT FRI AUG 7 2026
...SEVERE THUNDERSTORM WATCH 540 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...
THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. NUMEROUS SHOWERS AND
TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
MON
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS
THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-080800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
228 PM EDT FRI AUG 7 2026
...SEVERE THUNDERSTORM WATCH 540 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...
THIS AFTERNOON
S WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS
AND TSTMS.
TONIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS AND TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS.
SAT NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS AND TSTMS.
SUN
W WINDS 5 KT. WAVES FLAT.
SUN NIGHT
SW WINDS AROUND 5 KT. WAVES FLAT.
MON
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-080800-
CHESTER RIVER TO QUEENSTOWN MD-
228 PM EDT FRI AUG 7 2026
...SEVERE THUNDERSTORM WATCH 540 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...
THIS AFTERNOON
S WINDS 5 TO 10 KT. WAVES 1 FT. ISOLATED SHOWERS
AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. NUMEROUS SHOWERS AND
TSTMS.
SAT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS AND TSTMS.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
MON
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
TUE
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-080800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
228 PM EDT FRI AUG 7 2026
...SEVERE THUNDERSTORM WATCH 540 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...
THIS AFTERNOON
S WINDS 10 KT. WAVES 1 TO 2 FT. SCATTERED SHOWERS
AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. SCATTERED SHOWERS
AND TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
MON
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS THROUGH THE
NIGHT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-080800-
EASTERN BAY-
228 PM EDT FRI AUG 7 2026
...SEVERE THUNDERSTORM WATCH 540 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...
THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT. ISOLATED SHOWERS AND
TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
MON
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS
THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-080800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
228 PM EDT FRI AUG 7 2026
THIS AFTERNOON
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SCATTERED SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SCATTERED SHOWERS AND TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
MON
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-080800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
228 PM EDT FRI AUG 7 2026
THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
MON
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-080800-
PATUXENT RIVER TO BROOMES ISLAND MD-
228 PM EDT FRI AUG 7 2026
THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT. ISOLATED SHOWERS AND
TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT.
MON
SW WINDS AROUND 5 KT. WAVES 1 FT.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-080800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
228 PM EDT FRI AUG 7 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
THIS AFTERNOON
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SCATTERED SHOWERS AND TSTMS.
SAT
SW WINDS 10 TO 15 KT. WAVES 2 FT.
SAT NIGHT
SW WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-080800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
228 PM EDT FRI AUG 7 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
THIS AFTERNOON
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
SAT
SW WINDS 10 TO 15 KT. WAVES 1 FT.
SAT NIGHT
SW WINDS 10 TO 15 KT. WAVES 1 FT.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
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