090  
FNUS74 KLIX 211707  
FWSLIX  
 
SPOT FORECAST FOR STA VENICE - TS BERTHA...USCG  
NATIONAL WEATHER SERVICE NEW ORLEANS LA  
1207 PM CDT TUE JUL 21 2026  
 
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
WE CAN BE REACHED AT (985) 649-0357 IF YOU HAVE QUESTIONS OR CONCERNS  
WITH THIS FORECAST.  
   
..HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING  
 
   
DISCUSSION  
 
TROPICAL STORM BERTHA WILL MEANDER NORTHWEST OVER THE NORTHEAST GULF  
FOR THE NEXT DAY OR SO. IT IS FORECAST TO MOVE WESTWARD ALONG OR  
JUST OFFSHORE THE NORTHERN GULF COAST THROUGH THURSDAY. AS THE  
SYSTEM MOVES OVER OUR LOCAL WATERS, EXPECT WINDS AND SEAS TO  
INCREASE WITH TROPICAL STORM CONDITIONS LIKELY FOR PLAQUEMINES  
PARISH AND POSSIBLE FOR MOST IF NOT ALL THE LOCAL WATERS. THE  
SYSTEM WILL MOVE WEST OF THE REGION LATER THURSDAY AND CONDITIONS  
SHOULD IMPROVE GOING INTO THE UPCOMING WEEKEND.  
 
   
REST OF TODAY  
 
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS EARLY IN THE  
AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS  
LATE IN THE AFTERNOON.  
CHANCE OF PCPN......30 PERCENT.  
SURFACE WINDS (KTS).NORTHWEST WINDS 7 TO 17 KNOTS.  
TRANSPORT WINDS.....NORTH 16 TO 17 MPH.  
TRANSPORT WINDS M/S.NORTH 7 TO 8 METERS/SECOND.  
WAVE HEIGHT.........5 FEET.  
WAVE PERIOD.........8 SECONDS.  
WIND (20 FT)........NORTHWEST WINDS 6 TO 15 KNOTS. GUSTY AND  
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN  
THE AFTERNOON.  
 
TIME (CDT) 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........16 30 37 30 34 42  
WEATHER COV..... SCH SCH SCH CHC CHC  
WEATHER TYPE.... RW RW RW RW RW  
TSTM COV........ SCH SCH SCH CHC CHC  
CHC OF PCPN (%).10 10 10 20 30 30  
20 FT WIND DIR..NNW NNW NNW NNW NW NW  
20 FT WIND SPD..16 16 16 15 16 17  
20 FT WIND GUST.20 20 19 19 19 20  
SFC WND DIR.....NNW NNW NNW NNW NW NW  
SFC WND SPD KTS.16 16 16 15 16 17  
SFC WND GST.....20 20 19 19 19 20  
TRANSP WIND DIR.N NNW NNW NNW NNW NNW  
TRANSP WIND SPD.17 17 17 16 16 17  
TRANS WIND DIR..N NNW NNW NNW NNW NNW  
TRANS SPD (M/S).8 8 8 7 7 8  
WAVE PERIOD (S).8 7 7 7 8 8  
WAVE HEIGHT (FT)5 5 5 5 5 5  
   
TONIGHT  
 
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (55-65 PERCENT). SHOWERS LIKELY  
AND CHANCE OF THUNDERSTORMS.  
CHANCE OF PCPN......70 PERCENT.  
SURFACE WINDS (KTS).BREEZY. NORTHWEST WINDS UP TO 24 KNOTS.  
TRANSPORT WINDS.....NORTH 18 TO 26 MPH SHIFTING TO THE NORTHWEST  
AROUND 28 MPH EARLY IN THE MORNING.  
TRANSPORT WINDS M/S.NORTH 8 TO 12 METERS/SECOND SHIFTING TO THE  
NORTHWEST EARLY IN THE MORNING.  
WAVE HEIGHT.........7 FEET.  
WAVE PERIOD.........8 SECONDS.  
WIND (20 FT)........BREEZY. NORTHWEST WINDS 4 TO 22 KNOTS. GUSTY  
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........50 52 56 59 51 56 64 68 61 63 69 62  
WEATHER COV.....CHC LKY LKY CHC LKY LKY LKY CHC CHC CHC CHC CHC  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW  
TSTM COV........CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC  
CHC OF PCPN (%).40 70 70 60 60 60 60 40 40 50 50 50  
20 FT WIND DIR..NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW  
20 FT WIND SPD..18 19 20 20 20 20 20 20 20 20 21 24  
20 FT WIND GUST.22 23 23 24 24 24 24 24 25 25 25 28  
SFC WND DIR.....NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW  
SFC WND SPD KTS.18 19 20 20 20 20 20 20 20 20 21 24  
SFC WND GST.....22 23 23 24 24 24 24 24 25 25 25 28  
TRANSP WIND DIR.NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW  
TRANSP WIND SPD.18 18 20 20 20 21 22 22 23 24 26 28  
TRANS WIND DIR..NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW  
TRANS SPD (M/S).8 8 9 9 9 9 10 10 10 11 12 13  
WAVE PERIOD (S).8 7 7 8 8 8 8 8 8 8 8 8  
WAVE HEIGHT (FT)5 5 5 6 6 6 6 6 6 7 7 7  
   
WEDNESDAY  
 
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). THUNDERSTORMS  
LIKELY IN THE MORNING. SHOWERS THROUGH THE DAY.  
THUNDERSTORMS IN THE AFTERNOON.  
CHANCE OF PCPN......80 PERCENT.  
SURFACE WINDS (KTS).VERY WINDY. NORTHWEST WINDS 8 TO 39 KNOTS WITH  
GUSTS TO AROUND 50 KNOTS INCREASING TO WEST UP  
TO 44 KNOTS LATE IN THE AFTERNOON.  
TRANSPORT WINDS.....NORTHWEST 28 TO 36 MPH SHIFTING TO THE SOUTH 37  
TO 38 MPH LATE IN THE AFTERNOON.  
TRANSPORT WINDS M/S.NORTHWEST AROUND 13 METERS/SECOND INCREASING TO  
13 TO 16 METERS/SECOND IN THE MORNING AND EARLY  
AFTERNOON, THEN SHIFTING TO THE SOUTH AROUND 17  
METERS/SECOND LATE IN THE AFTERNOON.  
WAVE HEIGHT.........11 FEET BUILDING TO 13 FEET LATE IN THE  
AFTERNOON.  
WAVE PERIOD.........9 SECONDS.  
WIND (20 FT)........VERY WINDY. NORTHWEST GALES TO 35 KNOTS WITH  
GUSTS TO AROUND 50 KNOTS INCREASING TO GALES TO  
40 KNOTS LATE IN THE AFTERNOON. GUSTY AND  
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY  
IN THE MORNING. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS IN THE LATE MORNING  
AND EARLY AFTERNOON, THEN GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE  
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........62 59 63 61 64 73 79 82 80 79 85 84  
WEATHER COV.....CHC LKY CHC LKY DEF DEF LKY LKY DEF DEF DEF DEF  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW  
TSTM COV........CHC CHC CHC CHC LKY LKY LKY LKY DEF DEF LKY DEF  
CHC OF PCPN (%).60 60 50 60 80 70 70 60 80 80 80 80  
20 FT WIND DIR..NNW NNW NNW NNW NW NNW NNW NW NW NW WNW W  
20 FT WIND SPD..30 30 30 30 30 33 36 39 42 43 44 44  
20 FT WIND GUST. 36 41 45 46 48 50 50 50 51 51  
SFC WND DIR.....NNW NNW NNW NNW NW NNW NNW NW NW NW WNW W  
SFC WND SPD KTS.30 30 30 30 30 33 36 39 42 43 44 44  
SFC WND GST..... 36 41 45 46 48 50 50 50 51 51  
TRANSP WIND DIR.NNW NNW NNW NNW NW NNW NNW NW SSE S SSW S  
TRANSP WIND SPD.28 29 30 30 32 33 35 36 37 38 38 38  
TRANS WIND DIR..NNW NNW NNW NNW NW NNW NNW NW SSE S SSW S  
TRANS SPD (M/S).13 13 13 13 14 15 16 16 17 17 17 17  
WAVE PERIOD (S).8 8 8 8 8 7 7 8 8 8 8 9  
WAVE HEIGHT (FT)8 8 8 9 9 9 11 11 11 13 13 13  
 
 
FORECASTER...STANFIELD  
REQUESTED BY...LTJG AUSTIN WOHLERT  
TYPE OF REQUEST...MARINE  
.TAG 2617877.0/LIX  
.DELDT 07/21/26  
.FORMATTERVERSION 2.0.0  
.EMAIL AUSTIN.T.WOHLERT@USCG.MIL  
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