433
FZNT31 KNHC 202055
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
455 PM EDT WED AUG 20 2025
MARINE WEATHER HF VOICE BROADCAST FOR THE TROPICAL N ATLANTIC
FROM 07N TO 19N W OF 55W, THE N ATLANTIC FROM 19N TO
31N W OF 55W INCLUDING THE BAHAMAS, AND THE CARIBBEAN SEA.
SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE AVERAGE
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
SYNOPSIS FOR CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM
07N TO 19N W OF 55W
SYNOPSIS
FRESH TO LOCALLY STRONG TRADE WINDS AND LOCALLY
ROUGH SEAS WILL OCCUR OVER THE CENTRAL AND EASTERN CARIBBEAN
TONIGHT THROUGH FRI AS A STRENGTHENING PRESSURE GRADIENT DEVELOPS
BETWEEN LOW PRESSURE OVER COLOMBIA AND BUILDING HIGH PRESSURE IN
THE WAKE OF HURRICANE ERIN IN THE WESTERN ATLANTIC. ELSEWHERE,
FRESH TO OCCASIONALLY STRONG E TO SE WINDS WILL PULSE IN THE GULF
OF HONDURAS THU THROUGH THIS WEEKEND. LOOKING AHEAD, A TROPICAL
WAVE LOCATED SEVERAL HUNDRED MILES EAST OF THE LEEWARD ISLANDS
WILL ENCOUNTER ENVIRONMENTAL CONDITIONS CONDUCIVE FOR GRADUAL
TROPICAL DEVELOPMENT, AND A TROPICAL DEPRESSION COULD FORM BY
THIS WEEKEND WHILE IT MOVES NEAR OR TO THE NORTH OF THE NORTHERN
LEEWARD ISLANDS. THERE IS A LOW CHANCE OF DEVELOPMENT WITHIN THE
NEXT 48 HOURS, AND A MEDIUM CHANCE WITHIN THE NEXT 7 DAYS.
NW CARIBBEAN W OF 85W
TONIGHT
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
THU
SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
THU NIGHT
E WINDS 10 TO 20 KT. SEAS 2 FT OR LESS.
FRI
SE WINDS 10 TO 20 KT. SEAS 2 FT OR LESS.
FRI NIGHT
E WINDS 15 TO 25 KT. SEAS 3 TO 5 FT.
SAT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SAT NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SUN
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SUN NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
MON
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
TONIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT S OF 18N, AND
2 FT OR LESS ELSEWHERE.
THU
E WINDS 10 TO 20 KT. S OF 18N, SEAS 3 TO 5 FT. ELSEWHERE,
SEAS 2 FT OR LESS, BUILDING TO 3 FT IN THE AFTERNOON.
THU NIGHT
E WINDS 10 TO 20 KT. S OF 18N, SEAS 3 TO 5 FT.
ELSEWHERE, SEAS 3 FT IN THE EVENING, SUBSIDING TO 2 FT OR LESS.
FRI
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT S OF 18N, AND 2 FT OR
LESS ELSEWHERE.
FRI NIGHT
E WINDS 10 TO 20 KT. S OF 18N, SEAS 3 TO 5 FT.
ELSEWHERE, SEAS 2 FT OR LESS, BUILDING TO 3 FT AFTER MIDNIGHT.
SAT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SAT NIGHT
E WINDS 10 TO 20 KT. S OF 18N, SEAS 3 TO 5 FT.
ELSEWHERE, SEAS 3 FT IN THE EVENING, SUBSIDING TO 2 FT OR LESS.
SUN
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT S OF 18N, AND 2 FT OR
LESS ELSEWHERE.
SUN NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT S OF 18N, AND
2 FT OR LESS ELSEWHERE.
MON
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT S OF 18N, AND 3 FT
ELSEWHERE.
CARIBBEAN FROM 11N TO 15N W OF 72W
TONIGHT
NE WINDS 15 TO 25 KT. SEAS 5 TO 7 FT WITHIN 90 NM OF
COAST OF COLOMBIA, AND 3 TO 5 FT ELSEWHERE.
THU
E WINDS 15 TO 25 KT. SEAS 4 TO 6 FT.
THU NIGHT
E WINDS 15 TO 25 KT. SEAS 4 TO 6 FT.
FRI
E WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.
FRI NIGHT
NE TO E WINDS E 15 TO 25 KT. SEAS 4 TO 6 FT.
SAT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SAT NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SUN
E WINDS 15 TO 25 KT. SEAS 4 TO 6 FT.
SUN NIGHT
E WINDS 15 TO 25 KT. SEAS 4 TO 6 FT.
MON
E WINDS 15 TO 25 KT. SEAS 4 TO 6 FT.
SW CARIBBEAN S OF 11N
TONIGHT
N WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
THU
NE WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
THU NIGHT
NW WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
FRI
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI NIGHT
W WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SAT
SE WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
SAT NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SUN
SW WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 3 TO 4 FT.
SUN NIGHT
NW WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 3 TO 4 FT.
MON
W WINDS 10 TO 15 KT, SHIFTING TO NW IN THE AFTERNOON.
SEAS 3 TO 5 FT.
CARIBBEAN BETWEEN 64W AND 72W
TONIGHT
E WINDS 20 TO 30 KT GULF OF VENEZUELA, AND E 15 TO
25 KT ELSEWHERE. SEAS 5 TO 7 FT.
THU
E WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.
THU NIGHT
NE WINDS 15 TO 25 KT GULF OF VENEZUELA, AND E 10 TO
20 KT ELSEWHERE. SEAS 4 TO 6 FT.
FRI
E WINDS 15 TO 25 KT GULF OF VENEZUELA, AND E 10 TO 20 KT
ELSEWHERE. SEAS 3 TO 4 FT GULF OF VENEZUELA, AND 4 TO 6 FT
ELSEWHERE.
FRI NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SAT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SAT NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SUN
E WINDS 15 TO 25 KT. SEAS 4 TO 6 FT.
SUN NIGHT
E WINDS 20 TO 30 KT GULF OF VENEZUELA, AND E 15 TO
25 KT ELSEWHERE. SEAS 4 TO 6 FT.
MON
E WINDS 15 TO 25 KT. SEAS 3 TO 5 FT GULF OF VENEZUELA,
AND 5 TO 7 FT ELSEWHERE.
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO
19N W OF 55W
TONIGHT
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
THU
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
THU NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
FRI
SE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
FRI NIGHT
SE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SAT
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SAT NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SUN
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SUN NIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
MON
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO
15N W OF 55W
TONIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
THU
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
THU NIGHT
SE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
FRI
SE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
FRI NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SAT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SAT NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SUN
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SUN NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
MON
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
HURRICANE ERIN IS CENTERED NEAR 31.2N 73.6W AT
20/2100 UTC OR 450 NM W OF BERMUDA, MOVING N AT 12 KT. ESTIMATED
MINIMUM CENTRAL PRESSURE IS 943 MB. MAXIMUM SUSTAINED WIND SPEED
IS 95 KT WITH GUSTS TO 115 KT. A TURN TOWARD THE NORTH-NORTHEAST
IS EXPECTED LATER TODAY AND TONIGHT, FOLLOWED BY A FASTER MOTION
TOWARD THE NORTHEAST AND EAST-NORTHEAST BY THURSDAY AND FRIDAY.
ON THE FORECAST TRACK, THE CENTER OF ERIN WILL MOVE OVER THE
WESTERN ATLANTIC BETWEEN THE U.S. EAST COAST AND BERMUDA TODAY
THROUGH EARLY FRIDAY, AND THEN PASS SOUTH OF ATLANTIC CANADA
FRIDAY AND SATURDAY. SWELLS GENERATED BY ERIN WILL AFFECT THE
BAHAMAS, BERMUDA, AND THE EAST COAST OF THE UNITED STATES DURING
THE NEXT SEVERAL DAYS. LOOKING AHEAD, A TROPICAL WAVE LOCATED
SEVERAL HUNDRED MILES EAST OF THE LEEWARD ISLANDS WILL ENCOUNTER
ENVIRONMENTAL CONDITIONS CONDUCIVE FOR GRADUAL TROPICAL
DEVELOPMENT, AND A TROPICAL DEPRESSION COULD FORM BY THIS WEEKEND
WHILE IT MOVES NEAR OR TO THE NORTH OF THE NORTHERN LEEWARD
ISLANDS. THERE IS A LOW CHANCE OF DEVELOPMENT WITHIN THE NEXT 48
HOURS, AND A MEDIUM CHANCE WITHIN THE NEXT 7 DAYS. ELSEWHERE, A
TROPICAL WAVE LOCATED SEVERAL HUNDRED MILES SOUTHWEST OF THE CABO
VERDE ISLANDS WILL ENCOUNTER ENVIRONMENTAL CONDITIONS MARGINALLY
FAVORABLE FOR ADDITIONAL TROPICAL DEVELOPMENT OVER THE NEXT DAY
OR SO WHILE THE SYSTEM MOVES WEST-SOUTHWESTWARD AT AROUND 15 MPH
AND A SHORT-LIVED TROPICAL DEPRESSION COULD FORM. BY THE END OF
THE WEEK, ENVIRONMENTAL CONDITIONS ARE EXPECTED TO BECOME
UNFAVORABLE FOR FURTHER DEVELOPMENT. THERE IS A MEDIUM CHANCE OF
DEVELOPMENT WITHIN THE NEXT 48 HOURS AND THE NEXT 7 DAYS.
ATLC WATERS FROM 27N TO 31N W OF 77W
TONIGHT
NW WINDS 20 TO 30 KT. SEAS 14 TO 19 FT, SUBSIDING TO
11 TO 16 FT AFTER MIDNIGHT.
THU
W WINDS 10 TO 20 KT. SEAS 10 TO 15 FT, SUBSIDING TO 8 TO
12 FT IN THE AFTERNOON.
THU NIGHT
W WINDS 10 TO 15 KT, SHIFTING TO SW AFTER MIDNIGHT.
SEAS 7 TO 10 FT.
FRI
W WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
FRI NIGHT
S WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
SAT
SW WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
SAT NIGHT
SW WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
SUN
SW WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
SUN NIGHT
SW WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
MON
W WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
..HURRICANE WARNING
TONIGHT
HURRICANE CONDITIONS EXPECTED. W OF 70W, SW WINDS
75 TO 95 KT, DIMINISHING TO 45 TO 55 KT AFTER MIDNIGHT, SEAS
21 TO 38 FT, SUBSIDING TO 16 TO 26 FT AFTER MIDNIGHT. ELSEWHERE,
S WINDS 30 TO 40 KT, SEAS 13 TO 18 FT.
THU
TROPICAL STORM CONDITIONS POSSIBLE. SW WINDS 25 TO 35 KT
W OF 70W, AND S 20 TO 30 KT ELSEWHERE. W OF 70W, SEAS 15 TO
25 FT, SUBSIDING TO 12 TO 17 FT IN THE AFTERNOON. ELSEWHERE,
SEAS 12 TO 17 FT.
THU NIGHT
W OF 70W, W WINDS 20 TO 30 KT, DIMINISHING TO 10 TO
20 KT AFTER MIDNIGHT. ELSEWHERE, SW WINDS 20 TO 30 KT. SEAS
10 TO 15 FT.
FRI
W WINDS 10 TO 20 KT W OF 70W, AND SW 15 TO 25 KT
ELSEWHERE. SEAS 8 TO 13 FT.
FRI NIGHT
N WINDS LESS THAN 10 KT W OF 70W, AND W 10 TO 20 KT
ELSEWHERE. SEAS 8 TO 12 FT.
SAT
S WINDS LESS THAN 10 KT. SEAS 8 TO 12 FT.
SAT NIGHT
W OF 70W, S WINDS LESS THAN 10 KT. ELSEWHERE, SE
WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT AFTER MIDNIGHT.
SEAS 8 TO 11 FT.
SUN
S WINDS 10 TO 20 KT. SEAS 6 TO 9 FT W OF 70W, AND 8 TO
11 FT ELSEWHERE.
SUN NIGHT
SW WINDS 10 TO 15 KT W OF 70W, AND S 15 TO 25 KT
ELSEWHERE. SEAS 6 TO 9 FT W OF 70W, AND 8 TO 11 FT ELSEWHERE.
MON
SW WINDS 10 TO 15 KT W OF 70W, AND SW 20 TO 30 KT
ELSEWHERE. SEAS 6 TO 9 FT W OF 70W, AND 8 TO 11 FT ELSEWHERE.
BAHAMAS N OF 22N
TONIGHT
SW WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
THU
SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
THU NIGHT
W WINDS 10 TO 15 KT, SHIFTING TO S AFTER MIDNIGHT.
SEAS 3 TO 5 FT.
FRI
SW WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
FRI NIGHT
N WINDS LESS THAN 10 KT, SHIFTING TO E AFTER
MIDNIGHT. SEAS 3 TO 5 FT.
SAT
SE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SAT NIGHT
SE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SUN
SE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SUN NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
MON
SE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 3 TO 4 FT.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
TONIGHT
S WINDS 15 TO 25 KT. SEAS 9 TO 14 FT W OF 70W, AND
8 TO 11 FT ELSEWHERE.
THU
S WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
THU NIGHT
S WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
FRI
S WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 6 TO 8 FT.
FRI NIGHT
W OF 70W, W WINDS LESS THAN 10 KT, SHIFTING TO SE
AFTER MIDNIGHT. ELSEWHERE, N WINDS LESS THAN 10 KT, SHIFTING TO
NE AFTER MIDNIGHT. SEAS 6 TO 9 FT.
SAT
S WINDS LESS THAN 10 KT W OF 70W, AND NE 10 TO 15 KT
ELSEWHERE. SEAS 7 TO 10 FT.
SAT NIGHT
W OF 70W, S WINDS LESS THAN 10 KT. ELSEWHERE, N
WINDS 10 TO 15 KT, INCREASING TO 15 TO 25 KT AFTER MIDNIGHT.
SEAS 7 TO 8 FT W OF 70W, AND 8 TO 11 FT ELSEWHERE.
SUN
W OF 70W, SW WINDS LESS THAN 10 KT. ELSEWHERE, N WINDS
20 TO 30 KT, SHIFTING TO SW IN THE AFTERNOON. SEAS 6 TO 8 FT W
OF 70W, AND 8 TO 11 FT ELSEWHERE.
SUN NIGHT
S WINDS LESS THAN 10 KT W OF 70W, AND SW 20 TO
30 KT ELSEWHERE. SEAS 7 TO 10 FT.
MON
S WINDS LESS THAN 10 KT W OF 70W, AND S 15 TO 25 KT
ELSEWHERE. SEAS 6 TO 8 FT W OF 70W, AND 8 TO 11 FT ELSEWHERE.
ATLC WATERS S OF 22N W OF 65W
TONIGHT
SE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
THU
SE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
THU NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
FRI
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
FRI NIGHT
NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SAT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SUN
SE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SUN NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
MON
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W
TONIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
THU
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
THU NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
FRI
E WINDS 15 TO 25 KT. SEAS 6 TO 7 FT.
FRI NIGHT
SE WINDS 20 TO 30 KT. SEAS 6 TO 7 FT.
SAT
SE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
SAT NIGHT
SE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
SUN
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 7 TO 8 FT.
MON
E WINDS 10 TO 15 KT. SEAS 7 TO 8 FT.
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