677
FZUS54 KBRO 211733
CWFBRO
COASTAL WATERS FORECAST FOR THE LOWER TEXAS COAST
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1233 PM CDT TUE OCT 21 2025
LOWER TEXAS COASTAL WATERS FROM BAFFIN BAY TO THE MOUTH OF THE
RIO GRANDE OUT 60 NM.
SEAS ARE PROVIDED AS A RANGE OF THE AVERAGE HEIGHT OF THE HIGHEST
1/3 OF THE WAVES, ALONG WITH THE OCCASIONAL HEIGHT OF THE AVERAGE
HIGHEST 10 PERCENT OF THE WAVES.
GMZ100-220615-
1233 PM CDT TUE OCT 21 2025
SYNOPSIS
GENERALLY FAVORABLE MARINE CONDITIONS WILL PREVAIL
THROUGH LATE THURSDAY WITH LOW TO MODERATE SEAS AND LIGHT TO
MODERATE SOUTHEAST WINDS. BRIEF SMALL CRAFT EXERCISE CAUTION
CONDITIONS CANNOT BE RULED OUT THIS AFTERNOON AS WINDS INCREASE
AHEAD OF A WEAK FRONTAL BOUNDARY NORTH OF THE REGION. A TIGHTENING
PRESSURE GRADIENT IN RESPONSE TO AN UPPER LEVEL SYSTEM
TRANSLATING ACROSS THE PLAINS WILL RESULT IN SMALL CRAFT EXERCISE
CAUTION TO SMALL CRAFT ADVISORY CONDITIONS OVER THE GULF WATERS
AND LAGUNA MADRE ON FRIDAY AND SATURDAY. EXPECT WIND GUSTS AROUND
15 TO 20 KNOTS AND SEAS AROUND 4-5 FEET. OTHERWISE, LOW (20-30%)
RAIN CHANCES RETURN WEDNESDAY THROUGH FRIDAY, INCREASING TO MEDIUM
(40-60%) RAIN CHANCES ON SATURDAY.
GMZ130-132-135-220615-
LAGUNA MADRE FROM THE PORT OF BROWNSVILLE TO THE ARROYO COLORADO-
LAGUNA MADRE FROM THE ARROYO COLORADO TO 5 NM NORTH OF PORT
MANSFIELD TX-
LAGUNA MADRE FROM 5 NM NORTH OF PORT MANSFIELD TO BAFFIN BAY TX-
1233 PM CDT TUE OCT 21 2025
TONIGHT
SOUTHEAST WINDS 5 TO 10 KNOTS. LIGHT CHOP ON THE BAY.
WEDNESDAY
NORTH WINDS AROUND 5 KNOTS, BECOMING NORTHEAST IN
THE AFTERNOON. SMOOTH ON THE BAY, INCREASING TO LIGHT CHOP IN THE
AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS LATE IN
THE MORNING.
WEDNESDAY NIGHT
EAST WINDS 5 TO 10 KNOTS, BECOMING SOUTHEAST
AFTER MIDNIGHT. LIGHT CHOP ON THE BAY.
THURSDAY
SOUTHEAST WINDS 5 TO 10 KNOTS, INCREASING TO 10 TO
15 KNOTS IN THE AFTERNOON. LIGHT CHOP ON THE BAY, INCREASING TO A
MODERATE CHOP IN THE AFTERNOON.
THURSDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. A MODERATE CHOP
ON THE BAY.
FRIDAY
SOUTHEAST WINDS 10 TO 15 KNOTS, INCREASING TO 15 TO
20 KNOTS IN THE AFTERNOON. A MODERATE CHOP ON THE BAY, INCREASING
TO CHOPPY IN THE AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
FRIDAY NIGHT
SOUTHEAST WINDS 15 TO 20 KNOTS. CHOPPY ON THE
BAY. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE
EVENING. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT.
SATURDAY
SOUTH WINDS 15 TO 20 KNOTS. CHOPPY ON THE BAY. A
CHANCE OF SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS IN THE
MORNING, THEN A CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
SATURDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. A MODERATE CHOP ON
THE BAY. A CHANCE OF THUNDERSTORMS IN THE EVENING. A CHANCE OF
SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT.
SUNDAY
SOUTH WINDS 5 TO 10 KNOTS, BECOMING SOUTHEAST IN THE
AFTERNOON. LIGHT CHOP ON THE BAY. A SLIGHT CHANCE OF SHOWERS
EARLY IN THE MORNING.
SUNDAY NIGHT
SOUTHEAST WINDS 5 TO 10 KNOTS. LIGHT CHOP ON THE
BAY.
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.
GMZ150-155-220615-
GULF WATERS FROM PORT MANSFIELD TO THE RIO GRANDE OUT 20 NM-
GULF WATERS FROM BAFFIN BAY TO PORT MANSFIELD OUT 20 NM-
1233 PM CDT TUE OCT 21 2025
TONIGHT
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: EAST 2 FEET AT 6 SECONDS.
WEDNESDAY
NORTHEAST WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET.
WAVE DETAIL: EAST 2 FEET AT 6 SECONDS. A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE MORNING.
WEDNESDAY NIGHT
EAST WINDS AROUND 10 KNOTS, BECOMING SOUTHEAST
AFTER MIDNIGHT. SEAS 2 TO 3 FEET. WAVE DETAIL: EAST 2 FEET AT
6 SECONDS.
THURSDAY
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTHEAST 2 FEET AT 5 SECONDS.
THURSDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO
4 FEET. WAVE DETAIL: SOUTHEAST 3 FEET AT 5 SECONDS.
FRIDAY
SOUTHEAST WINDS 10 TO 15 KNOTS, INCREASING TO 15 TO
20 KNOTS IN THE AFTERNOON. SEAS 3 TO 5 FEET. WAVE DETAIL:
SOUTHEAST 5 FEET AT 6 SECONDS. A SLIGHT CHANCE OF SHOWERS. A
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
FRIDAY NIGHT
SOUTHEAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 5 FEET,
BUILDING TO 5 TO 7 FEET, OCCASIONALLY TO 9 FEET AFTER MIDNIGHT. A
SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE EVENING. A SLIGHT
CHANCE OF SHOWERS IN THE EVENING. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT.
SATURDAY
SOUTH WINDS 15 TO 20 KNOTS, BECOMING SOUTHEAST 10 TO
15 KNOTS IN THE AFTERNOON. SEAS 5 TO 7 FEET, OCCASIONALLY TO
9 FEET. A CHANCE OF SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS IN
THE MORNING, THEN A CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
SATURDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 4 TO 5 FEET. A
CHANCE OF SHOWERS AND THUNDERSTORMS UNTIL EARLY MORNING, THEN A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE MORNING.
SUNDAY
SOUTH WINDS AROUND 10 KNOTS, BECOMING SOUTHEAST IN THE
AFTERNOON. SEAS 3 TO 4 FEET. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE MORNING.
SUNDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 4 FEET.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
GMZ170-175-220615-
GULF WATERS FROM PORT MANSFIELD TO THE RIO GRANDE EXTENDING FROM
20 TO 60 NM-
GULF WATERS FROM BAFFIN BAY TO PORT MANSFIELD EXTENDING FROM
20 TO 60 NM-
1233 PM CDT TUE OCT 21 2025
TONIGHT
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTHEAST 2 FEET AT 5 SECONDS.
WEDNESDAY
NORTHEAST WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET.
WAVE DETAIL: EAST 2 FEET AT 6 SECONDS. A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS.
WEDNESDAY NIGHT
EAST WINDS AROUND 10 KNOTS, BECOMING SOUTHEAST
AFTER MIDNIGHT. SEAS 2 TO 3 FEET. WAVE DETAIL: EAST 2 FEET AT
5 SECONDS. A SLIGHT CHANCE OF SHOWERS.
THURSDAY
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTHEAST 2 FEET AT 5 SECONDS. A SLIGHT CHANCE OF
SHOWERS.
THURSDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO
4 FEET. WAVE DETAIL: EAST 4 FEET AT 5 SECONDS. A SLIGHT CHANCE OF
SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE MORNING.
FRIDAY
SOUTHEAST WINDS AROUND 15 KNOTS. SEAS 4 TO 5 FEET. WAVE
DETAIL: SOUTHEAST 5 FEET AT 6 SECONDS. A CHANCE OF SHOWERS. A
SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE MORNING. A SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
FRIDAY NIGHT
SOUTHEAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 5 FEET,
BUILDING TO 5 TO 7 FEET, OCCASIONALLY TO 9 FEET AFTER MIDNIGHT. A
CHANCE OF SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE
EVENING. A SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE MORNING.
SATURDAY
SOUTH WINDS 15 TO 20 KNOTS. SEAS 6 TO 8 FEET,
OCCASIONALLY TO 10 FEET. SHOWERS LIKELY WITH A SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING, THEN SHOWERS LIKELY WITH A CHANCE
OF THUNDERSTORMS IN THE AFTERNOON.
SATURDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 4 TO 6 FEET,
OCCASIONALLY TO 8 FEET. A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS UNTIL EARLY MORNING, THEN A SLIGHT CHANCE OF
THUNDERSTORMS EARLY IN THE MORNING.
SUNDAY
SOUTH WINDS AROUND 10 KNOTS, BECOMING SOUTHEAST IN THE
AFTERNOON. SEAS 4 TO 5 FEET. A CHANCE OF SHOWERS EARLY IN THE
MORNING. A SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. A
SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON.
SUNDAY NIGHT
SOUTHEAST WINDS AROUND 10 KNOTS. SEAS 4 TO
5 FEET.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page