409  
FZUS54 KBRO 212043  
CWFBRO  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE BROWNSVILLE TX  
343 PM CDT THU OCT 21 2021  
 
LOWER TEXAS COASTAL WATERS FROM BAFFIN BAY TO THE MOUTH OF THE  
RIO GRANDE OUT TO 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.  
 
GMZ100-220930-  
SYNOPSIS FOR BAFFIN BAY TO RIO GRANDE OUT 60 NM-  
343 PM CDT THU OCT 21 2021  
   
SYNOPSIS
 
LIGHT EAST TO SOUTHEASTERLY WINDS PREVAIL WITH LIGHT  
TO MODERATE SEAS THROUGH THE PERIOD. ISOLATED SHOWERS AND  
THUNDERSTORMS ARE EXPECTED BY THE END OF THE WEEK AND INTO THE  
WEEKEND.  
 

 
 
GMZ130-132-135-220930-  
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-  
343 PM CDT THU OCT 21 2021  
   
TONIGHT
 
EAST WINDS 5 TO 10 KNOTS. A LIGHT CHOP ON THE BAY.    
FRIDAY
 
EAST WINDS AROUND 5 KNOTS BECOMING NORTHEAST IN THE  
AFTERNOON. SMOOTH ON THE BAY BUILDING TO A LIGHT CHOP IN THE  
AFTERNOON. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH THE  
DAY.    
FRIDAY NIGHT
 
EAST WINDS 5 TO 10 KNOTS SHIFTING SOUTHEAST AFTER  
MIDNIGHT. A LIGHT CHOP ON THE BAY. CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS AFTER MIDNIGHT.    
SATURDAY
 
SOUTHEAST WINDS 5 TO 10 KNOTS INCREASING TO 10 TO  
15 KNOTS IN THE AFTERNOON. A LIGHT CHOP ON THE BAY BUILDING TO A  
MODERATE CHOP IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS.    
SATURDAY NIGHT
 
SOUTHEAST WINDS 10 TO 15 KNOTS. A MODERATE CHOP  
ON THE BAY.    
SUNDAY
 
SOUTHEAST WINDS 10 TO 15 KNOTS. A MODERATE CHOP ON THE  
BAY.    
SUNDAY NIGHT
 
SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTH  
5 TO 10 KNOTS AFTER MIDNIGHT. A MODERATE CHOP ON THE BAY  
SUBSIDING TO A LIGHT CHOP AFTER MIDNIGHT.    
MONDAY
 
SOUTH WINDS 5 TO 10 KNOTS BECOMING SOUTHEAST 10 TO  
15 KNOTS IN THE AFTERNOON. A LIGHT CHOP ON THE BAY BUILDING TO A  
MODERATE CHOP IN THE AFTERNOON.    
MONDAY NIGHT
 
SOUTHEAST WINDS 5 TO 10 KNOTS. A LIGHT CHOP ON  
THE BAY.    
TUESDAY
 
SOUTHEAST WINDS 10 TO 15 KNOTS. A MODERATE CHOP ON THE  
BAY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.    
TUESDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. A MODERATE CHOP ON  
THE BAY.  
 

 
 
GMZ150-155-220930-  
COASTAL WATERS FROM PORT MANSFIELD TO THE RIO GRANDE OUT 20 NM-  
COASTAL WATERS FROM BAFFIN BAY TO PORT MANSFIELD OUT 20 NM-  
343 PM CDT THU OCT 21 2021  
   
TONIGHT
 
EAST WINDS 5 TO 10 KNOTS. SEAS 2 TO 4 FEET.    
FRIDAY
 
EAST WINDS AROUND 5 KNOTS BECOMING NORTHEAST IN THE  
AFTERNOON. SEAS 2 TO 4 FEET. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS.    
FRIDAY NIGHT
 
EAST WINDS 10 TO 15 KNOTS SHIFTING SOUTHEAST  
AFTER MIDNIGHT. SEAS 2 TO 4 FEET. CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS AFTER MIDNIGHT.    
SATURDAY
 
SOUTHEAST WINDS 5 TO 10 KNOTS INCREASING TO 10 TO  
15 KNOTS IN THE AFTERNOON. SEAS 2 TO 4 FEET. SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS.    
SATURDAY NIGHT
 
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO  
4 FEET.    
SUNDAY
 
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 5 FEET.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING.    
SUNDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.    
MONDAY
 
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS 2 TO 4 FEET. SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS.    
MONDAY NIGHT
 
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.    
TUESDAY
 
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.    
TUESDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.  
 

 
 
GMZ170-175-220930-  
WATERS FROM PORT MANSFIELD TO THE RIO GRANDE EXTENDING FROM 20 TO  
60 NM-  
WATERS FROM BAFFIN BAY TO PORT MANSFIELD EXTENDING FROM 20 TO  
60 NM-  
343 PM CDT THU OCT 21 2021  
   
TONIGHT
 
EAST WINDS 5 TO 10 KNOTS. SEAS 2 TO 4 FEET.    
FRIDAY
 
EAST WINDS AROUND 5 KNOTS BECOMING NORTHEAST IN THE  
AFTERNOON. SEAS 2 TO 4 FEET. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE MORNING, THEN CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.    
FRIDAY NIGHT
 
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.  
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT.    
SATURDAY
 
SOUTHEAST WINDS 5 TO 10 KNOTS INCREASING TO 10 TO  
15 KNOTS IN THE AFTERNOON. SEAS 2 TO 4 FEET. SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS.    
SATURDAY NIGHT
 
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO  
5 FEET. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER  
MIDNIGHT.    
SUNDAY
 
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 5 FEET.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING.    
SUNDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 3 TO 5 FEET.    
MONDAY
 
SOUTH WINDS 5 TO 10 KNOTS. SEAS 3 TO 5 FEET. SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS.    
MONDAY NIGHT
 
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.    
TUESDAY
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET. SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS.    
TUESDAY NIGHT
 
SOUTH WINDS 15 TO 20 KNOTS. SEAS 3 TO 5 FEET.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.  
 

 
 
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