627
FZUS54 KBRO 211917
CWFBRO
COASTAL WATERS FORECAST FOR THE LOWER TEXAS COAST
NATIONAL WEATHER SERVICE BROWNSVILLE TX
217 PM 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.
GMZ100-220815-
217 PM CDT TUE JUL 21 2026
SYNOPSIS
GENERALLY FAVORABLE MARINE CONDITIONS CAN BE EXPECTED
OVER THE NEXT COUPLE OF DAYS WITH LOW TO MODERATE SEAS AND WINDS.
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. CONDITIONS WILL
DEPEND UPON HOW MUCH SWELL BERTHA GENERATES.
GMZ130-132-135-220815-
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-
217 PM CDT TUE JUL 21 2026
REST OF TODAY
SOUTHEAST WINDS 10 TO 15 KNOTS. 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
SOUTHWEST WINDS 5 TO 10 KNOTS, BECOMING SOUTHEAST 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.
THURSDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. A MODERATE CHOP ON
THE BAY.
FRIDAY
SOUTH WINDS 10 TO 15 KNOTS, BECOMING SOUTHEAST 15 TO
20 KNOTS LATE IN THE AFTERNOON. A MODERATE CHOP ON THE BAY,
INCREASING TO CHOPPY LATE IN THE AFTERNOON.
FRIDAY NIGHT
SOUTHEAST WINDS 15 TO 20 KNOTS, DIMINISHING TO
10 TO 15 KNOTS IN THE LATE EVENING AND OVERNIGHT. CHOPPY ON THE
BAY, DIMINISHING TO A MODERATE CHOP IN THE LATE EVENING AND
OVERNIGHT.
SATURDAY
SOUTHEAST WINDS 10 TO 15 KNOTS, BECOMING AROUND
15 KNOTS LATE IN THE AFTERNOON. A MODERATE CHOP ON THE BAY.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. A MODERATE CHOP
ON THE BAY.
GMZ150-155-220815-
GULF WATERS FROM PORT MANSFIELD TO THE RIO GRANDE OUT 20 NM-
GULF WATERS FROM BAFFIN BAY TO PORT MANSFIELD OUT 20 NM-
217 PM CDT TUE JUL 21 2026
REST OF TODAY
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO
3 FEET. WAVE DETAIL: SOUTHEAST 2 FEET AT 5 SECONDS AND EAST
1 FOOT AT 9 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 1 TO 2 FEET. WAVE DETAIL:
SOUTH 2 FEET AT 4 SECONDS AND EAST 1 FOOT AT 8 SECONDS.
WEDNESDAY NIGHT
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 8 SECONDS.
THURSDAY
SOUTH WINDS 5 TO 10 KNOTS, BECOMING SOUTHEAST IN THE
AFTERNOON. 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. A SLIGHT CHANCE OF THUNDERSTORMS IN THE 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 3 TO 4 FEET.
SATURDAY
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 4 FEET.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO
4 FEET.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
GMZ170-175-220815-
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-
217 PM CDT TUE JUL 21 2026
REST OF TODAY
SOUTH WINDS 5 TO 10 KNOTS. 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 10 TO 15 KNOTS, DIMINISHING TO 5 TO
10 KNOTS IN THE AFTERNOON, THEN 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.
THURSDAY
SOUTHWEST WINDS 10 TO 15 KNOTS, BECOMING SOUTH 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 7 SECONDS. A SLIGHT CHANCE
OF THUNDERSTORMS. A CHANCE OF SHOWERS UNTIL LATE AFTERNOON, THEN
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 AND EAST 1 FOOT AT
7 SECONDS. A SLIGHT CHANCE OF SHOWERS EARLY IN THE EVENING. A
SLIGHT CHANCE OF SHOWERS EARLY IN THE MORNING.
FRIDAY
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.
FRIDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 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.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
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