252
FZNT31 KNHC 180320
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
1120 PM 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 22.3N 69.3W AT 11 PM
EDT, AND IS MOVING NORTHWEST AT 10 KT. MAXIMUM SUSTAINED WINDS
ARE 115 KT WITH GUSTS TO 140 KT, AND THE MINIMUM CENTRAL
PRESSURE IS 942 MB. ERIN WILL MOVE TO 23.2N 70.2W MON MORNING,
24.6N 71.3W MON EVENING, 26.1N 72.1W TUE MORNING, 28.0N 72.8W
TUE EVENING, 29.9N 73.1W WED MORNING, AND 32.0N 72.5W WED
EVENING. ERIN WILL CHANGE LITTLE IN INTENSITY AS IT MOVES NEAR
36.5N 67.5W LATE THU. FRESH S TO SW WINDS OCCURRING OVER THE NE
AND N-CENTRAL CARIBBEAN AS WELL AS THE ATLANTIC PASSAGES WILL
GRADUALLY DIMINISH TO MODERATE TO FRESH S WINDS ON MON. LARGE
NORTHERLY SWELL WILL ALSO BLEED THROUGH THE PASSAGES AND INTO
THE NE CARIBBEAN WATERS THROUGH MON MORNING BEFORE FADING.
EASTERLY TRADE WINDS ARE EXPECTED TO RETURN TO EAST AND CENTRAL
PORTIONS OF THE BASIN ON WED AND INCREASE TO FRESH SPEEDS ACROSS
MOST OF CENTRAL PORTIONS WED NIGHT AND THU AS ATLANTIC HIGH
PRESSURE BUILDS WEST- SOUTHWESTWARD IN THE WAKE OF ERIN.
NW CARIBBEAN W OF 85W
OVERNIGHT
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
MON
NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
MON NIGHT
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
TUE
E WINDS LESS THAN 10 KT IN THE MORNING, BECOMING VARIABLE
WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
TUE NIGHT
NE WINDS LESS THAN 10 KT, SHIFTING TO E AFTER
MIDNIGHT. SEAS 2 FT OR LESS.
WED
SE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
WED NIGHT
E WINDS LESS THAN 10 KT, SHIFTING TO SE AFTER
MIDNIGHT. SEAS 2 FT OR LESS.
THU
SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
THU NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
FRI
SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
OVERNIGHT
NE WINDS 10 TO 20 KT. SEAS 3 FT.
MON
S OF 18N, NW WINDS LESS THAN 10 KT, SHIFTING TO SW IN THE
AFTERNOON. ELSEWHERE, NE WINDS 10 TO 15 KT. SEAS 3 FT.
MON NIGHT
S OF 18N, NW WINDS LESS THAN 10 KT, SHIFTING TO E
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, NE WINDS
10 TO 15 KT, SHIFTING TO W 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, SW WINDS 10 TO 15 KT.
SEAS 2 FT OR LESS.
WED
SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS, BUILDING TO 3 FT
IN THE AFTERNOON.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 3 FT S OF 18N, AND 2 FT
OR LESS ELSEWHERE.
THU
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT S OF 18N, AND 2 FT OR
LESS ELSEWHERE.
THU NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT S OF 18N, AND
2 FT OR LESS ELSEWHERE.
FRI
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
OVERNIGHT
E WINDS LESS THAN 10 KT. SEAS 3 FT.
MON
S WINDS LESS THAN 10 KT. SEAS 3 FT.
MON NIGHT
NE WINDS LESS THAN 10 KT. 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 15 KT. SEAS 3 FT IN THE EVENING,
SUBSIDING TO 2 FT OR LESS.
WED
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
WED NIGHT
NE WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
THU
E 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 4 TO 6 FT.
SW CARIBBEAN S OF 11N
OVERNIGHT
NW WINDS LESS THAN 10 KT, SHIFTING TO SW AFTER
MIDNIGHT. SEAS 2 FT OR LESS.
MON
SW WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS, BUILDING TO
3 FT IN THE AFTERNOON.
MON NIGHT
NE WINDS LESS THAN 10 KT. SEAS 3 FT IN THE EVENING,
SUBSIDING TO 2 FT OR LESS.
TUE
SE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
TUE NIGHT
NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS,
BUILDING TO 3 FT AFTER MIDNIGHT.
WED
NE WINDS LESS THAN 10 KT. SEAS 3 FT IN THE MORNING,
SUBSIDING TO 2 FT OR LESS.
WED NIGHT
N WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 2 FT OR LESS.
THU
N WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 2 FT OR LESS, BUILDING TO 3 FT IN THE
AFTERNOON.
THU NIGHT
NW WINDS LESS THAN 10 KT. SEAS 3 FT.
FRI
W WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
CARIBBEAN BETWEEN 64W AND 72W
OVERNIGHT
N WINDS LESS THAN 10 KT GULF OF VENEZUELA, AND S
15 TO 25 KT ELSEWHERE. SEAS 2 FT OR LESS GULF OF VENEZUELA, AND
3 TO 5 FT ELSEWHERE.
MON
GULF OF VENEZUELA, VARIABLE WINDS LESS THAN 10 KT,
BECOMING N LESS THAN 10 KT IN THE AFTERNOON. ELSEWHERE, S WINDS
10 TO 20 KT. 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
SE 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 2 FT OR LESS GULF OF
VENEZUELA, AND 3 TO 5 FT ELSEWHERE.
WED
E WINDS 10 TO 20 KT. SEAS 4 TO 5 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 5 FT.
THU
E WINDS 10 TO 20 KT. SEAS 4 TO 6 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 10 TO 20 KT. SEAS 3 TO 5 FT.
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO
19N W OF 55W
OVERNIGHT
SE WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
MON
SE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
TUE
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
TUE NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
WED
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED NIGHT
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
THU
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
THU NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
FRI
SE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO
15N W OF 55W
OVERNIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
MON
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
MON NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
TUE
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
TUE NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
WED
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
THU
E WINDS 10 TO 15 KT. SEAS 3 TO 5 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.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
MAJOR HURRICANE ERIN IS NEAR 22.3N 69.3W AT 11 PM
EDT, AND IS MOVING NORTHWEST AT 10 KT. MAXIMUM SUSTAINED WINDS
ARE 115 KT WITH GUSTS TO 140 KT, AND THE MINIMUM CENTRAL
PRESSURE IS 942 MB. ERIN WILL MOVE TO 23.2N 70.2W MON MORNING,
24.6N 71.3W MON EVENING, 26.1N 72.1W TUE MORNING, 28.0N 72.8W TUE
EVENING, 29.9N 73.1W WED MORNING, AND 32.0N 72.5W WED EVENING.
ERIN WILL CHANGE LITTLE IN INTENSITY AS IT MOVES NEAR 36.5N 67.5W
LATE THU. SWELLS GENERATED BY ERIN WILL CONTINUE TO AFFECT
PORTIONS OF THE VIRGIN ISLANDS, PUERTO RICO, HISPANIOLA, AND THE
TURKS AND CAICOS ISLANDS DURING THE NEXT COUPLE OF DAYS. THESE
SWELLS WILL SPREAD TO THE BAHAMAS, BERMUDA, THE EAST COAST OF THE
UNITED STATES, AND ATLANTIC CANADA DURING THE EARLY AND MIDDLE
PORTIONS OF THE WEEK. THESE ROUGH OCEAN CONDITIONS WILL LIKELY
CAUSE LIFE-THREATENING SURF AND RIP CURRENTS. 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 76W FROM EARLY TUE THROUGH WED. IN THE WAKE OF ERIN,
HIGH PRESSURE WILL BUILD WEST- SOUTHWESTWARD ALONG 24N THROUGH
THU NIGHT.
ATLC WATERS FROM 27N TO 31N W OF 77W
OVERNIGHT
NE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
MON
NE WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN
THE AFTERNOON. SEAS 6 TO 8 FT.
MON NIGHT
NE WINDS 10 TO 15 KT. SEAS 8 TO 11 FT.
TUE
NE WINDS 10 TO 20 KT. SEAS 9 TO 14 FT.
TUE NIGHT
N WINDS 15 TO 25 KT. SEAS 12 TO 17 FT.
WED
N WINDS 20 TO 30 KT. SEAS 14 TO 19 FT.
WED NIGHT
NW WINDS 15 TO 25 KT. SEAS 11 TO 16 FT.
THU
NW WINDS 10 TO 20 KT. SEAS 9 TO 14 FT.
THU NIGHT
NW WINDS 10 TO 15 KT, SHIFTING TO W AFTER MIDNIGHT.
SEAS 8 TO 11 FT.
FRI
VARIABLE WINDS LESS THAN 10 KT, BECOMING N LESS THAN
10 KT IN THE AFTERNOON. SEAS 7 TO 9 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
..HURRICANE WARNING
OVERNIGHT
SE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
MON
TROPICAL STORM CONDITIONS POSSIBLE. E WINDS 15 TO 25 KT
W OF 70W, AND S 15 TO 25 KT ELSEWHERE. SEAS 8 TO 11 FT, BUILDING
TO 9 TO 14 FT IN THE AFTERNOON.
MON NIGHT
TROPICAL STORM CONDITIONS EXPECTED. W OF 70W, E
WINDS 25 TO 35 KT, INCREASING TO 35 TO 45 KT AFTER MIDNIGHT,SEAS
12 TO 17 FT, BUILDING TO 15 TO 20 FT AFTER MIDNIGHT. ELSEWHERE,
SE WINDS 30 TO 40 KT, SEAS 10 TO 15 FT.
TUE
HURRICANE CONDITIONS EXPECTED. W OF 70W, E WINDS 50 TO
60 KT, BECOMING NE 85 TO 105 KT IN THE AFTERNOON,SEAS 17 TO
27 FT, BUILDING TO 22 TO 32 FT IN THE AFTERNOON. ELSEWHERE, SE
WINDS 35 TO 45 KT, SEAS 13 TO 18 FT.
TUE NIGHT
HURRICANE CONDITIONS POSSIBLE. NE WINDS 85 TO
105 KT W OF 70W, AND SE 30 TO 40 KT ELSEWHERE. SEAS 26 TO 36 FT
W OF 70W, AND 15 TO 20 FT ELSEWHERE.
WED
HURRICANE CONDITIONS POSSIBLE.
WED NIGHT
HURRICANE CONDITIONS POSSIBLE.
THU
TROPICAL STORM CONDITIONS POSSIBLE.
THU NIGHT
W WINDS 20 TO 30 KT W OF 70W, AND SW 20 TO 30 KT
ELSEWHERE. SEAS 10 TO 15 FT W OF 70W, AND 13 TO 18 FT ELSEWHERE.
FRI
NW WINDS 10 TO 15 KT W OF 70W, AND W 15 TO 25 KT
ELSEWHERE. SEAS 8 TO 13 FT W OF 70W, AND 11 TO 16 FT ELSEWHERE.
BAHAMAS N OF 22N
OVERNIGHT
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 9 FT.
MON NIGHT
TROPICAL STORM CONDITIONS POSSIBLE. N WINDS 20 TO
30 KT. SEAS 7 TO 10 FT.
TUE
NW WINDS 20 TO 30 KT. SEAS 7 TO 10 FT.
TUE NIGHT
W WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
WED
W WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
WED NIGHT
SW WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
THU
W WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
THU NIGHT
W WINDS 10 TO 15 KT, SHIFTING TO SW AFTER MIDNIGHT.
SEAS 4 TO 6 FT.
FRI
W WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
..HURRICANE WARNING
OVERNIGHT
HURRICANE CONDITIONS. W OF 70W, NE WINDS 35 TO
45 KT, INCREASING TO 50 TO 60 KT AFTER MIDNIGHT. ELSEWHERE, SE
WINDS 90 TO 110 KT. SEAS 14 TO 19 FT W OF 70W, AND 17 TO 27 FT
ELSEWHERE.
MON
HURRICANE CONDITIONS EXPECTED. W OF 70W, NE WINDS 100 TO
120 KT, SEAS 16 TO 26 FT, BUILDING TO 19 TO 29 FT IN THE
AFTERNOON. ELSEWHERE, SE WINDS 90 TO 110 KT, DIMINISHING TO
65 TO 75 KT IN THE AFTERNOON,SEAS 17 TO 27 FT, SUBSIDING TO
17 TO 22 FT IN THE AFTERNOON.
MON NIGHT
HURRICANE CONDITIONS EXPECTED. W OF 70W, N WINDS
90 TO 110 KT. ELSEWHERE, SE WINDS 50 TO 60 KT, DIMINISHING TO
40 TO 50 KT AFTER MIDNIGHT. SEAS 22 TO 32 FT W OF 70W, AND 15 TO
20 FT ELSEWHERE.
TUE
HURRICANE CONDITIONS EXPECTED. W WINDS 85 TO 105 KT W OF
70W, AND S 35 TO 45 KT ELSEWHERE. W OF 70W, SEAS 23 TO 33 FT,
SUBSIDING TO 20 TO 30 FT IN THE AFTERNOON. ELSEWHERE, SEAS 14 TO
19 FT.
TUE NIGHT
HURRICANE CONDITIONS POSSIBLE. W OF 70W, SW WINDS
65 TO 75 KT, DIMINISHING TO 35 TO 45 KT AFTER MIDNIGHT,SEAS
16 TO 26 FT, SUBSIDING TO 15 TO 20 FT AFTER MIDNIGHT. ELSEWHERE,
S WINDS 30 TO 40 KT, SEAS 11 TO 16 FT.
WED
TROPICAL STORM CONDITIONS POSSIBLE.
WED NIGHT
S WINDS 20 TO 30 KT. SEAS 9 TO 14 FT W OF 70W, AND
8 TO 11 FT ELSEWHERE.
THU
S WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.
THU NIGHT
S WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
FRI
S WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
ATLC WATERS S OF 22N W OF 65W
..TROPICAL STORM WARNING
OVERNIGHT
TROPICAL STORM CONDITIONS. SW WINDS 55 TO 65 KT.
SEAS 11 TO 16 FT.
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
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 5 TO 7 FT.
WED NIGHT
SE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
THU
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
THU NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W
OVERNIGHT
SE WINDS 15 TO 25 KT. SEAS 6 TO 9 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 20 KT. SEAS 5 TO 6 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
WED
E WINDS 10 TO 20 KT. SEAS 6 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 6 FT.
THU
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
THU NIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
FRI
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
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