780
FZUS54 KBRO 201621
CWFBRO
COASTAL WATERS FORECAST FOR THE LOWER TEXAS COAST
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1121 AM CDT MON JUL 20 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.
GMZ100-210515-
1121 AM CDT MON JUL 20 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 A TROPICAL SYSTEM TRACKING WESTWARD ALONG
THE NORTHERN GULF COAST.
GMZ130-132-135-210515-
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-
1121 AM CDT MON JUL 20 2026
..SMALL CRAFT SHOULD EXERCISE CAUTION
TONIGHT
SOUTH WINDS 10 TO 15 KNOTS. A MODERATE CHOP ON THE
BAY.
TUESDAY
SOUTH WINDS 5 TO 10 KNOTS BECOMING SOUTHEAST 10 TO
15 KNOTS IN THE AFTERNOON. LIGHT CHOP ON THE BAY BECOMING A
MODERATE CHOP IN THE AFTERNOON.
TUESDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTH
5 TO 10 KNOTS AFTER MIDNIGHT. A MODERATE CHOP ON THE BAY BECOMING
LIGHT CHOP AFTER MIDNIGHT.
WEDNESDAY
SOUTH WINDS 5 TO 10 KNOTS BECOMING SOUTHEAST 10 TO
15 KNOTS IN THE AFTERNOON. LIGHT CHOP ON THE BAY BECOMING A
MODERATE CHOP IN THE AFTERNOON.
WEDNESDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTH
5 TO 10 KNOTS AFTER MIDNIGHT. A MODERATE CHOP ON THE BAY BECOMING
LIGHT CHOP AFTER MIDNIGHT.
THURSDAY
SOUTH WINDS 5 TO 10 KNOTS BECOMING SOUTHEAST 10 TO
15 KNOTS IN THE AFTERNOON. LIGHT CHOP ON THE BAY BECOMING A
MODERATE CHOP IN THE AFTERNOON.
THURSDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. A MODERATE CHOP ON
THE BAY. A SLIGHT CHANCE OF SHOWERS.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS BECOMING SOUTHEAST 10 TO
15 KNOTS IN THE AFTERNOON. LIGHT CHOP ON THE BAY BECOMING A
MODERATE CHOP IN THE AFTERNOON. A SLIGHT CHANCE OF SHOWERS. A
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
FRIDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. A MODERATE CHOP
ON THE BAY.
SATURDAY
SOUTHEAST WINDS 5 TO 10 KNOTS INCREASING TO 10 TO
15 KNOTS IN THE AFTERNOON. LIGHT CHOP ON THE BAY BECOMING A
MODERATE CHOP IN THE AFTERNOON.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. A MODERATE CHOP
ON THE BAY.
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.
GMZ150-155-210515-
GULF WATERS FROM PORT MANSFIELD TO THE RIO GRANDE OUT 20 NM-
GULF WATERS FROM BAFFIN BAY TO PORT MANSFIELD OUT 20 NM-
1121 AM CDT MON JUL 20 2026
TONIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTHEAST 3 FEET AT 5 SECONDS.
TUESDAY
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTHEAST 2 FEET AT 4 SECONDS.
TUESDAY 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
8 SECONDS.
WEDNESDAY
SOUTH WINDS 5 TO 10 KNOTS BECOMING SOUTHEAST 10 TO
15 KNOTS IN THE AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL:
SOUTHEAST 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: SOUTHEAST 2 FEET AT 4 SECONDS AND EAST 1 FOOT AT
7 SECONDS.
THURSDAY
SOUTH WINDS 5 TO 10 KNOTS BECOMING SOUTHEAST 10 TO
15 KNOTS IN THE AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL:
SOUTHEAST 2 FEET AT 6 SECONDS.
THURSDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. A
SLIGHT CHANCE OF SHOWERS.
FRIDAY
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. A SLIGHT
CHANCE OF SHOWERS IN THE MORNING.
FRIDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.
SATURDAY
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO
4 FEET.
GMZ170-175-210515-
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-
1121 AM CDT MON JUL 20 2026
TONIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTH AFTER
MIDNIGHT. SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTHEAST 2 FEET AT
5 SECONDS AND EAST 1 FOOT AT 9 SECONDS.
TUESDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 4 SECONDS AND EAST 1 FOOT AT 9 SECONDS.
TUESDAY 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
9 SECONDS.
WEDNESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS BECOMING SOUTH 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
7 SECONDS. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
THURSDAY
SOUTHWEST WINDS 10 TO 15 KNOTS BECOMING SOUTH 5 TO
10 KNOTS IN THE AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL:
SOUTHEAST 2 FEET AT 6 SECONDS. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING.
THURSDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. A
SLIGHT CHANCE OF SHOWERS.
FRIDAY
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. A SLIGHT
CHANCE OF SHOWERS IN THE MORNING.
FRIDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.
SATURDAY
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO
4 FEET.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
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