011
FZNT31 KNHC 171449
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
1049 AM EDT SUN AUG 17 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
MAJOR HURRICANE ERIN IS NEAR 21.0N 67.4W AT
1500 UTC, MOVING WEST-NORTHWEST AT 11 KT. MAXIMUM SUSTAINED
WINDS REMAIN 110 KT WITH GUSTS TO 135 KT, AND THE MINIMUM
CENTRAL PRESSURE IS 942 MB. ERIN WILL BEGIN TO MOVE MORE NW
LATER TODAY AND STRENGTHEN MODESTLY THROUGH MON MORNING BEFORE
BEGINNING A SLOW WEAKENING TREND. ERIN IS EXPECTED TO REACH NEAR
21.9N 68.6W THIS EVENING, NEAR 23.1N 70.2W MON MORNING, REACH
NEAR 25.9N 72.2W TUE MORNING, AND NEAR 30.0N 72.7W WED MORNING.
FRESH TO LOCALLY STRONG S TO SW WINDS OCCURRING OVER THE EXTREME
NORTHEASTERN CARIBBEAN AND ATLANTIC PASSAGES THIS MORNING WILL
DIMINISH TO MODERATE TO FRESH S WINDS THROUGH THE PASSAGES ON
MON. LARGE NORTHERLY SWELL WILL ALSO BLEED THROUGH THE PASSAGES
AND INTO THE NE CARIBBEAN WATERS TODAY THROUGH TONIGHT BEFORE
FADING MON. TRADES ARE FORECAST TO INCREASE TO MOSTLY FRESH
SPEEDS ACROSS THE MOST OF THE CENTRAL AND NORTHEAST SECTIONS OF
THE BASIN BEGINNING LATE WED AS ATLANTIC HIGH PRESSURE BUILDS
WEST-SOUTHWESTWARD IN THE WAKE OF ERIN.
NW CARIBBEAN W OF 85W
THIS AFTERNOON
NE WINDS LESS THAN 10 KT. SEAS 3 FT.
TONIGHT
NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
MON
N WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
MON NIGHT
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
TUE
NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
TUE NIGHT
SE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
WED
SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
THU
SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
THIS AFTERNOON
NE WINDS 10 TO 20 KT. SEAS 3 FT.
TONIGHT
N WINDS 10 TO 20 KT. SEAS 3 FT.
MON
N WINDS 10 TO 15 KT. SEAS 3 FT IN THE MORNING, SUBSIDING
TO 2 FT OR LESS.
MON NIGHT
S OF 18N, NW WINDS LESS THAN 10 KT, SHIFTING TO SE
AFTER MIDNIGHT. ELSEWHERE, N WINDS 10 TO 15 KT. SEAS 2 FT OR
LESS.
TUE
S OF 18N, SE WINDS LESS THAN 10 KT. ELSEWHERE, N WINDS
10 TO 20 KT, SHIFTING TO W 10 TO 15 KT IN THE AFTERNOON. SEAS
2 FT OR LESS.
TUE NIGHT
S OF 18N, E WINDS LESS THAN 10 KT, INCREASING TO
10 TO 15 KT AFTER MIDNIGHT. ELSEWHERE, W WINDS 10 TO 15 KT,
SHIFTING TO S AFTER MIDNIGHT. SEAS 2 FT OR LESS.
WED
SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
WED NIGHT
SE WINDS 10 TO 20 KT. SEAS 3 FT.
THU
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT S OF 18N, AND 2 FT OR
LESS ELSEWHERE.
CARIBBEAN FROM 11N TO 15N W OF 72W
THIS AFTERNOON
W WINDS 10 TO 15 KT. SEAS 3 FT.
TONIGHT
NW WINDS 10 TO 15 KT, SHIFTING TO SW AFTER MIDNIGHT.
SEAS 3 FT.
MON
SW WINDS 10 TO 15 KT WITHIN 90 NM OF COAST OF COLOMBIA,
AND S LESS THAN 10 KT ELSEWHERE. SEAS 3 FT.
MON NIGHT
NW WINDS LESS THAN 10 KT, SHIFTING TO E AFTER
MIDNIGHT. SEAS 3 FT IN THE EVENING, SUBSIDING TO 2 FT OR LESS.
TUE
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
TUE NIGHT
E WINDS 10 TO 20 KT. SEAS 2 FT OR LESS, BUILDING TO
3 FT AFTER MIDNIGHT.
WED
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
THU
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT WITHIN 90 NM OF COAST
OF COLOMBIA, AND 3 TO 5 FT ELSEWHERE.
SW CARIBBEAN S OF 11N
THIS AFTERNOON
W WINDS LESS THAN 10 KT, SHIFTING TO SW IN THE
AFTERNOON. SEAS 3 FT.
TONIGHT
W WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT
AFTER MIDNIGHT. SEAS 3 FT IN THE EVENING, SUBSIDING TO 2 FT OR
LESS.
MON
S WINDS LESS THAN 10 KT, SHIFTING TO SW IN THE AFTERNOON.
SEAS 2 FT OR LESS.
MON NIGHT
NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
TUE
E WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 FT OR LESS.
TUE NIGHT
NE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
WED
E WINDS 10 TO 15 KT, SHIFTING TO NE IN THE AFTERNOON.
SEAS 2 FT OR LESS.
WED NIGHT
NE WINDS LESS THAN 10 KT, SHIFTING TO N AFTER
MIDNIGHT. SEAS 2 FT OR LESS.
THU
NE WINDS 10 TO 15 KT, SHIFTING TO N IN THE AFTERNOON.
SEAS 3 FT.
CARIBBEAN BETWEEN 64W AND 72W
THIS AFTERNOON
SW WINDS LESS THAN 10 KT GULF OF VENEZUELA,
AND SW 15 TO 25 KT ELSEWHERE. SEAS 2 FT OR LESS GULF OF
VENEZUELA, AND 3 TO 5 FT ELSEWHERE.
TONIGHT
GULF OF VENEZUELA, NW WINDS LESS THAN 10 KT IN THE
EVENING, BECOMING VARIABLE WINDS LESS THAN 10 KT. ELSEWHERE, S
WINDS 15 TO 25 KT. SEAS 2 FT OR LESS GULF OF VENEZUELA, AND 3 TO
5 FT ELSEWHERE.
MON
VARIABLE WINDS LESS THAN 10 KT GULF OF VENEZUELA, AND S
10 TO 20 KT ELSEWHERE. SEAS 2 FT OR LESS GULF OF VENEZUELA, AND
3 TO 5 FT ELSEWHERE.
MON NIGHT
SE WINDS 10 TO 20 KT. SEAS 2 FT OR LESS GULF OF
VENEZUELA, AND 3 TO 5 FT ELSEWHERE.
TUE
S WINDS LESS THAN 10 KT GULF OF VENEZUELA, AND SE 10 TO
20 KT ELSEWHERE. SEAS 3 TO 4 FT.
TUE NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
WED
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
THU
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO
19N W OF 55W
THIS AFTERNOON
SE WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.
TONIGHT
SE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
MON
SE WINDS 10 TO 20 KT. SEAS 4 TO 5 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
TUE
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
TUE NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
WED NIGHT
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
THU
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
THIS AFTERNOON
SE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
TONIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
MON
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
TUE
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
TUE NIGHT
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
THU
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
MAJOR HURRICANE ERIN IS NEAR 21.0N 67.4W AT
1500 UTC, MOVING WEST-NORTHWEST AT 11 KT. MAXIMUM SUSTAINED
WINDS REMAIN 110 KT WITH GUSTS TO 135 KT, AND THE MINIMUM CENTRAL
PRESSURE IS 942 MB. ERIN WILL BEGIN TO MOVE MORE NW LATER TODAY
AND STRENGTHEN MODESTLY THROUGH MON MORNING BEFORE BEGINNING A
SLOW WEAKENING TREND THROUGH MIDWEEK. ERIN IS EXPECTED TO REACH
NEAR 21.9N 68.6W THIS EVENING, NEAR 23.1N 70.2W MON MORNING,
REACH NEAR 25.9N 72.2W TUE MORNING, NEAR 30.0N 72.7W WED MORNING,
AND REACH NEAR 32.1N 72.1W WED EVENING BEFORE EXITING THE AREA.
LARGE SWELL GENERATED BY ERIN WILL CONTINUE TO AFFECT THE
ATLANTIC WATERS SOUTH OF 28N BETWEEN THE NORTHERN LEEWARD ISLANDS
AND THE SOUTHEASTERN BAHAMAS TODAY, AND SHIFT NW TO THE
REMAINDER OF THE BAHAMAS ON MON, AND REACH THE COASTLINES OF THE
SE U.S. TUE MORNING, THEN CONTINUE ACROSS THE REGIONAL WATERS
THROUGH THU. THE PRESSURE GRADIENT BETWEEN A RIDGE OVER THE
EASTERN U.S. AND ERIN WILL PROMOTE MODERATE TO FRESH N TO NE
WINDS OFFSHORE NORTHERN FLORIDA TO NEAR 75W FROM MON THROUGH WED.
IN THE WAKE OF ERIN, HIGH PRESSURE WILL BUILD WEST-SOUTHWESTWARD
ALONG 24N/25N THROUGH THU NIGHT.
ATLC WATERS FROM 27N TO 31N W OF 77W
THIS AFTERNOON
N WINDS LESS THAN 10 KT. SEAS 3 FT.
TONIGHT
NE WINDS 10 KT. SEAS 3 TO 5 FT.
MON
NE WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN
THE AFTERNOON. SEAS 5 TO 7 FT.
MON NIGHT
NE WINDS 10 TO 15 KT. SEAS 7 TO 10 FT.
TUE
NE WINDS 10 TO 20 KT. SEAS 8 TO 13 FT.
TUE NIGHT
N WINDS 15 TO 25 KT. SEAS 11 TO 16 FT.
WED
N WINDS 15 TO 25 KT. SEAS 11 TO 16 FT.
WED NIGHT
NW WINDS 10 TO 20 KT. SEAS 11 TO 16 FT.
THU
NW WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 9 TO 13 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
..TROPICAL STORM WARNING
THIS AFTERNOON
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT W OF 70W,
AND 6 TO 9 FT ELSEWHERE.
TONIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT W OF 70W, AND
8 TO 11 FT ELSEWHERE.
MON
TROPICAL STORM CONDITIONS POSSIBLE. E WINDS 15 TO 25 KT.
SEAS 8 TO 11 FT, BUILDING TO 9 TO 14 FT IN THE AFTERNOON.
MON NIGHT
TROPICAL STORM CONDITIONS EXPECTED. NE WINDS 30 TO
40 KT W OF 70W, AND SE 25 TO 35 KT ELSEWHERE. SEAS 12 TO 17 FT.
TUE
HURRICANE CONDITIONS POSSIBLE. W OF 70W, NE WINDS 45 TO
55 KT, INCREASING TO 90 TO 110 KT IN THE AFTERNOON,SEAS 16 TO
26 FT, BUILDING TO 21 TO 31 FT IN THE AFTERNOON. ELSEWHERE, SE
WINDS 30 TO 40 KT, SEAS 15 TO 20 FT.
TUE NIGHT
HURRICANE CONDITIONS POSSIBLE.
WED
HURRICANE CONDITIONS POSSIBLE.
WED NIGHT
HURRICANE CONDITIONS POSSIBLE.
THU
TROPICAL STORM CONDITIONS POSSIBLE.
BAHAMAS N OF 22N
THIS AFTERNOON
NE WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
TONIGHT
TROPICAL STORM CONDITIONS POSSIBLE. NE WINDS 15 TO
25 KT. SEAS 4 TO 6 FT.
MON
TROPICAL STORM CONDITIONS POSSIBLE. N WINDS 20 TO 30 KT.
SEAS 6 TO 8 FT.
MON NIGHT
TROPICAL STORM CONDITIONS POSSIBLE. N WINDS 20 TO
30 KT. SEAS 6 TO 9 FT.
TUE
TROPICAL STORM CONDITIONS POSSIBLE. NW WINDS 20 TO
30 KT. SEAS 6 TO 9 FT.
TUE NIGHT
W WINDS 15 TO 25 KT. SEAS 6 TO 8 FT.
WED
W WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
WED NIGHT
SW WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
THU
SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
..HURRICANE WARNING
THIS AFTERNOON
TROPICAL STORM CONDITIONS. NE WINDS 20 TO
30 KT W OF 70W, AND E 40 TO 50 KT ELSEWHERE. SEAS 7 TO 10 FT W
OF 70W, AND 15 TO 20 FT ELSEWHERE.
TONIGHT
HURRICANE CONDITIONS EXPECTED. W OF 70W, NE WINDS
30 TO 40 KT, INCREASING TO 50 TO 60 KT AFTER MIDNIGHT,SEAS 9 TO
14 FT, BUILDING TO 13 TO 18 FT AFTER MIDNIGHT. ELSEWHERE, E
WINDS 70 TO 90 KT, BECOMING SE 90 TO 110 KT AFTER MIDNIGHT,SEAS
17 TO 27 FT.
MON
HURRICANE CONDITIONS EXPECTED. W OF 70W, NE WINDS 95 TO
115 KT, SEAS 16 TO 26 FT, BUILDING TO 19 TO 29 FT IN THE
AFTERNOON. ELSEWHERE, SE WINDS 95 TO 115 KT, DIMINISHING TO
60 TO 70 KT IN THE AFTERNOON,SEAS 16 TO 26 FT.
MON NIGHT
HURRICANE CONDITIONS EXPECTED. W OF 70W, N WINDS
95 TO 115 KT. ELSEWHERE, SE WINDS 45 TO 55 KT, DIMINISHING TO
35 TO 45 KT AFTER MIDNIGHT. SEAS 22 TO 32 FT W OF 70W, AND 16 TO
21 FT ELSEWHERE.
TUE
HURRICANE CONDITIONS POSSIBLE. W WINDS 90 TO 110 KT W OF
70W, AND S 35 TO 45 KT ELSEWHERE. SEAS 22 TO 32 FT W OF 70W, AND
13 TO 18 FT ELSEWHERE.
TUE NIGHT
HURRICANE CONDITIONS POSSIBLE.
WED
TROPICAL STORM CONDITIONS POSSIBLE.
WED NIGHT
SW WINDS 20 TO 30 KT W OF 70W, AND S 20 TO 30 KT
ELSEWHERE. SEAS 9 TO 14 FT W OF 70W, AND 8 TO 11 FT ELSEWHERE.
THU
S WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.
ATLC WATERS S OF 22N W OF 65W
..HURRICANE WARNING
THIS AFTERNOON
HURRICANE CONDITIONS. N WINDS 90 TO 100 KT.
SEAS 14 TO 19 FT.
TONIGHT
HURRICANE CONDITIONS EXPECTED. W WINDS 85 TO 105 KT,
BECOMING SW 65 TO 75 KT AFTER MIDNIGHT. SEAS 13 TO 18 FT,
SUBSIDING TO 10 TO 15 FT AFTER MIDNIGHT.
MON
TROPICAL STORM CONDITIONS EXPECTED. SW WINDS 40 TO
50 KT, DIMINISHING TO 30 TO 40 KT IN THE AFTERNOON. SEAS 9 TO
14 FT.
MON NIGHT
TROPICAL STORM CONDITIONS POSSIBLE. SW WINDS 20 TO
30 KT. SEAS 8 TO 11 FT.
TUE
S WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
TUE NIGHT
S WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
WED
S WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
THU
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W
..TROPICAL STORM WARNING
THIS AFTERNOON
TROPICAL STORM CONDITIONS. SE WINDS 25 TO
35 KT. SEAS 8 TO 11 FT.
TONIGHT
SE WINDS 20 TO 30 KT. SEAS 7 TO 10 FT.
MON
SE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
MON NIGHT
SE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
TUE
SE WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
WED
E WINDS 10 TO 15 KT. SEAS 6 TO 7 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 7 FT.
THU
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page