158
FZUS54 KBRO 210655
CWFBRO
COASTAL WATERS FORECAST FOR THE LOWER TEXAS COAST
NATIONAL WEATHER SERVICE BROWNSVILLE TX
155 AM CDT TUE JUL 21 2026
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.
GMZ100-211915-
155 AM CDT TUE JUL 21 2026
SYNOPSIS
GENERALLY FAVORABLE MARINE CONDITIONS CAN BE EXPECTED
OVER THE NEXT COUPLE OF DAYS WITH LOW TO MODERATE SEAS. A MODEST
PRESSURE GRADIENT WILL AT TIMES PRODUCE MODERATE WINDS ALONG THE
LOWER TEXAS COAST THROUGH THE FORECAST PERIOD. ALTHOUGH SMALL
CRAFT ADVISORY IS NOT LIKELY TO BE NEEDED, PERIODIC SMALL CRAFT
SHOULD EXERCISE CAUTION IS POSSIBLE, ESPECIALLY FOR THE LAGUNA
MADRE. MARINE CONDITIONS COULD POTENTIALLY BECOME MORE ADVERSE MID
TO LATE WEEK IN RESPONSE TO TROPICAL STORM BERTHA TRACKING
WESTWARD ALONG THE NORTHERN GULF COAST.
GMZ130-132-135-211915-
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-
155 AM CDT TUE JUL 21 2026
TODAY
SOUTH WINDS 5 TO 10 KNOTS, BECOMING SOUTHEAST 10 TO
15 KNOTS THIS AFTERNOON. A MODERATE CHOP ON THE BAY.
TONIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS, BECOMING SOUTH 5 TO
10 KNOTS AFTER MIDNIGHT. A MODERATE CHOP ON THE BAY, DIMINISHING
TO LIGHT CHOP EARLY IN THE MORNING.
WEDNESDAY
SOUTH WINDS 5 TO 10 KNOTS, BECOMING SOUTHEAST EARLY
IN THE AFTERNOON, THEN INCREASING TO 10 TO 15 KNOTS LATE IN THE
AFTERNOON. LIGHT CHOP ON THE BAY, INCREASING TO A MODERATE CHOP
LATE IN THE AFTERNOON.
WEDNESDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS, DIMINISHING TO
5 TO 10 KNOTS AFTER MIDNIGHT. A MODERATE CHOP ON THE BAY,
DIMINISHING TO LIGHT CHOP EARLY IN THE MORNING.
THURSDAY
SOUTH WINDS 5 TO 10 KNOTS, BECOMING SOUTHEAST 10 TO
15 KNOTS LATE IN THE AFTERNOON. LIGHT CHOP ON THE BAY, INCREASING
TO A MODERATE CHOP LATE IN THE AFTERNOON. A CHANCE OF SHOWERS
UNTIL LATE AFTERNOON.
THURSDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. A MODERATE CHOP ON
THE BAY.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS, BECOMING SOUTHEAST 10 TO
15 KNOTS IN THE AFTERNOON. A MODERATE CHOP ON THE BAY.
FRIDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. A MODERATE CHOP
ON THE BAY.
SATURDAY
SOUTHEAST WINDS 10 TO 15 KNOTS. A MODERATE CHOP ON
THE BAY.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. A MODERATE CHOP
ON THE BAY. A SLIGHT CHANCE OF SHOWERS.
GMZ150-155-211915-
GULF WATERS FROM PORT MANSFIELD TO THE RIO GRANDE OUT 20 NM-
GULF WATERS FROM BAFFIN BAY TO PORT MANSFIELD OUT 20 NM-
155 AM CDT TUE JUL 21 2026
TODAY
SOUTH WINDS 10 TO 15 KNOTS, DIMINISHING TO 5 TO 10 KNOTS
THIS AFTERNOON, THEN BECOMING SOUTHEAST 10 TO 15 KNOTS LATE THIS
AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTHEAST 2 FEET AT
5 SECONDS.
TONIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTHEAST 2 FEET AT 4 SECONDS AND EAST 1 FOOT AT
8 SECONDS.
WEDNESDAY
SOUTH WINDS 5 TO 10 KNOTS, BECOMING SOUTHEAST 10 TO
15 KNOTS LATE IN THE AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL:
SOUTH 2 FEET AT 4 SECONDS AND EAST 1 FOOT AT 8 SECONDS.
WEDNESDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.
WAVE DETAIL: SOUTH 2 FEET AT 4 SECONDS AND EAST 1 FOOT AT
8 SECONDS. A SLIGHT CHANCE OF SHOWERS EARLY IN THE MORNING.
THURSDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 4 SECONDS AND EAST 1 FOOT AT 8 SECONDS. A
CHANCE OF SHOWERS UNTIL LATE AFTERNOON.
THURSDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.
WAVE DETAIL: SOUTHEAST 2 FEET AT 4 SECONDS AND EAST 1 FOOT AT
7 SECONDS.
FRIDAY
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.
FRIDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.
SATURDAY
SOUTH WINDS 10 TO 15 KNOTS. SEAS 3 TO 4 FEET.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO
4 FEET. A SLIGHT CHANCE OF SHOWERS.
GMZ170-175-211915-
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-
155 AM CDT TUE JUL 21 2026
TODAY
SOUTH WINDS 10 TO 15 KNOTS, DIMINISHING TO 5 TO 10 KNOTS
THIS AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTH 2 FEET AT
5 SECONDS AND EAST 1 FOOT AT 9 SECONDS.
TONIGHT
SOUTH WINDS 10 TO 15 KNOTS, BECOMING SOUTHWEST EARLY
IN THE MORNING. SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTH 2 FEET AT
4 SECONDS AND EAST 1 FOOT AT 9 SECONDS.
WEDNESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS, BECOMING SOUTH LATE
IN THE AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTH 2 FEET AT
4 SECONDS AND EAST 1 FOOT AT 7 SECONDS.
WEDNESDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.
WAVE DETAIL: SOUTH 2 FEET AT 4 SECONDS AND EAST 1 FOOT AT
8 SECONDS. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE MORNING.
THURSDAY
SOUTH WINDS 10 TO 15 KNOTS, DIMINISHING TO 5 TO
10 KNOTS IN THE AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTH
2 FEET AT 4 SECONDS AND EAST 1 FOOT AT 8 SECONDS. A SLIGHT CHANCE
OF THUNDERSTORMS IN THE MORNING. A CHANCE OF SHOWERS UNTIL LATE
AFTERNOON. A SLIGHT CHANCE OF SHOWERS LATE IN THE AFTERNOON.
THURSDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.
WAVE DETAIL: SOUTH 2 FEET AT 4 SECONDS.
FRIDAY
SOUTH WINDS AROUND 10 KNOTS. SEAS 2 TO 3 FEET.
FRIDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.
SATURDAY
SOUTH WINDS 10 TO 15 KNOTS. SEAS 3 TO 4 FEET.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO
4 FEET. A SLIGHT CHANCE OF SHOWERS.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
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