239
FZNT31 KNHC 160321
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
1121 PM EDT FRI AUG 15 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
HURRICANE ERIN IS NEAR 19.5N 59.5W AT 11 PM EDT, AND
IS MOVING WEST-NORTHWEST AT 15 KT. MAXIMUM SUSTAINED WINDS ARE
85 KT WITH GUSTS TO 105 KT, AND THE MINIMUM CENTRAL PRESSURE IS
979 MB. ERIN WILL MOVE TO 20.2N 61.6W SAT MORNING, 20.9N 64.2W
SAT EVENING, 21.7N 66.3W SUN MORNING, 22.9N 67.9W SUN EVENING,
24.0N 68.9W MON MORNING, AND 25.6N 69.8W MON EVENING. ERIN WILL
CHANGE LITTLE IN INTENSITY AS IT MOVES NEAR 28.9N 70.5W LATE
TUE. ELSEWHERE IN THE WAKE OF ERIN, HIGH PRESSURE WILL MAINTAIN
MODERATE TO MOSTLY FRESH EASTERLY WINDS THROUGH EARLY NEXT WEEK
ALONG WITH SLIGHT TO MODERATE SEAS.
NW CARIBBEAN W OF 85W
OVERNIGHT
NE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
SAT
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
SAT NIGHT
NE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
SUN
NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
SUN NIGHT
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
MON
E WINDS LESS THAN 10 KT IN THE MORNING, BECOMING VARIABLE
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
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
WED
SE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
OVERNIGHT
NE WINDS 10 TO 15 KT S OF 18N, AND E 15 TO 25 KT
ELSEWHERE. SEAS 3 TO 4 FT.
SAT
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
SAT NIGHT
NE WINDS 10 TO 20 KT. SEAS 3 FT.
SUN
NE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
SUN NIGHT
N WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
MON
N WINDS 10 TO 15 KT, SHIFTING TO NW IN THE AFTERNOON.
SEAS 2 FT OR LESS.
MON NIGHT
NW WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
TUE
S WINDS LESS THAN 10 KT S OF 18N, AND W 10 TO 15 KT
ELSEWHERE. SEAS 2 FT OR LESS.
TUE NIGHT
SE WINDS LESS THAN 10 KT S OF 18N, AND SW 10 TO
15 KT ELSEWHERE. SEAS 2 FT OR LESS.
WED
SE WINDS LESS THAN 10 KT S OF 18N, AND SW 10 TO 15 KT
ELSEWHERE. SEAS 2 FT OR LESS.
CARIBBEAN FROM 11N TO 15N W OF 72W
OVERNIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SAT
WITHIN 90 NM OF COAST OF COLOMBIA, SE WINDS LESS THAN
10 KT, SHIFTING TO S IN THE AFTERNOON. ELSEWHERE, NE WINDS 10 TO
15 KT. SEAS 3 TO 4 FT.
SAT NIGHT
N WINDS 10 TO 15 KT, SHIFTING TO NE AFTER MIDNIGHT.
SEAS 3 FT.
SUN
NW WINDS 10 TO 15 KT. SEAS 3 FT IN THE MORNING, SUBSIDING
TO 2 FT OR LESS.
SUN NIGHT
N WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
MON
S WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 FT OR LESS.
MON NIGHT
NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
TUE
VARIABLE WINDS LESS THAN 10 KT, BECOMING SE LESS THAN
10 KT IN THE AFTERNOON. SEAS 2 FT OR LESS.
TUE NIGHT
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
WED
E WINDS LESS THAN 10 KT WITHIN 90 NM OF COAST OF
COLOMBIA, AND E 10 TO 15 KT ELSEWHERE. SEAS 2 FT OR LESS.
SW CARIBBEAN S OF 11N
OVERNIGHT
NW WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SAT
NW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SAT NIGHT
NW WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN
10 KT AFTER MIDNIGHT. SEAS 3 FT.
SUN
W WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
SUN NIGHT
W WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
MON
S WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
MON NIGHT
NW WINDS LESS THAN 10 KT IN THE EVENING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
TUE
VARIABLE WINDS LESS THAN 10 KT, BECOMING SE LESS THAN
10 KT IN THE AFTERNOON. SEAS 2 FT OR LESS.
TUE NIGHT
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
WED
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
CARIBBEAN BETWEEN 64W AND 72W
OVERNIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SAT
GULF OF VENEZUELA, E WINDS LESS THAN 10 KT, SHIFTING TO
SW IN THE AFTERNOON. ELSEWHERE, E WINDS 10 TO 20 KT. SEAS 2 FT
OR LESS GULF OF VENEZUELA, AND 3 TO 4 FT ELSEWHERE.
SAT NIGHT
GULF OF VENEZUELA, N WINDS LESS THAN 10 KT.
ELSEWHERE, NE WINDS 10 TO 15 KT, SHIFTING TO SW 10 TO 20 KT
AFTER MIDNIGHT. SEAS 3 FT.
SUN
GULF OF VENEZUELA, W WINDS 10 KT IN THE MORNING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. ELSEWHERE, SW WINDS 10 TO 20 KT.
SEAS 2 FT OR LESS GULF OF VENEZUELA, AND 3 TO 4 FT ELSEWHERE.
SUN NIGHT
GULF OF VENEZUELA, N WINDS LESS THAN 10 KT,
SHIFTING TO E AFTER MIDNIGHT. ELSEWHERE, S WINDS 10 TO 20 KT.
SEAS 2 FT OR LESS GULF OF VENEZUELA, AND 3 TO 4 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 4 FT ELSEWHERE.
MON NIGHT
SE WINDS 10 TO 20 KT. SEAS 2 FT OR LESS GULF OF
VENEZUELA, AND 3 TO 4 FT ELSEWHERE.
TUE
SE WINDS 10 TO 15 KT. GULF OF VENEZUELA, SEAS 2 FT OR
LESS. ELSEWHERE, SEAS 2 FT OR LESS, BUILDING TO 3 FT IN THE
AFTERNOON.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 3 FT.
WED
SW WINDS LESS THAN 10 KT GULF OF VENEZUELA, AND E 10 TO
15 KT ELSEWHERE. SEAS 2 FT OR LESS GULF OF VENEZUELA, AND 3 TO
4 FT ELSEWHERE.
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO
19N W OF 55W
..TROPICAL STORM WARNING
OVERNIGHT
TROPICAL STORM CONDITIONS POSSIBLE. SW WINDS 20 TO
30 KT. SEAS 6 TO 8 FT.
SAT
S WINDS 20 TO 30 KT. SEAS 6 TO 9 FT.
SAT NIGHT
SE WINDS 20 TO 30 KT. SEAS 6 TO 8 FT.
SUN
SE WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.
SUN NIGHT
SE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
MON
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
TUE
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
WED
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO
15N W OF 55W
OVERNIGHT
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
SAT
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
SAT NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
SUN
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
MON
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
TUE
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
WED
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
HURRICANE ERIN IS NEAR 19.5N 59.5W AT 11 PM EDT, AND
IS MOVING WEST-NORTHWEST AT 15 KT. MAXIMUM SUSTAINED WINDS ARE
85 KT WITH GUSTS TO 105 KT, AND THE MINIMUM CENTRAL PRESSURE IS
979 MB. ERIN WILL MOVE TO 20.2N 61.6W SAT MORNING, 20.9N 64.2W
SAT EVENING, 21.7N 66.3W SUN MORNING, 22.9N 67.9W SUN EVENING,
24.0N 68.9W MON MORNING, AND 25.6N 69.8W MON EVENING. ERIN WILL
CHANGE LITTLE IN INTENSITY AS IT MOVES NEAR 28.9N 70.5W LATE
TUE. LONG PERIOD EAST TO SOUTHEAST SWELL WILL SPREAD TO THE
WESTERN ATLANTIC BEGINNING LATE SUN AND INTO NEXT WEEK.
OTHERWISE, HIGH PRESSURE WILL WEAKEN OVER THE WESTERN PART OF
THE AREA THROUGH THE WEEKEND AS ERIN LIFTS NORTHWARD. A TIGHT
GRADIENT BETWEEN THE CYCLONIC FLOW ASSOCIATED WITH ERIN AND A
HIGH PRESSURE THAT SURGES SOUTHWARD OFF THE SOUTHEAST U.S. COAST
WILL LEAD TO FRESH NORTH TO NORTHEAST WINDS OVER THE WATERS EAST
OF NORTHERN FLORIDA TO NEAR 74W EARLY NEXT WEEK.
ATLC WATERS FROM 27N TO 31N W OF 77W
OVERNIGHT
S WINDS LESS THAN 10 KT. SEAS 3 FT.
SAT
S WINDS LESS THAN 10 KT, SHIFTING TO NW IN THE AFTERNOON.
SEAS 2 FT OR LESS.
SAT NIGHT
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
SUN
N WINDS LESS THAN 10 KT. SEAS 3 FT.
SUN NIGHT
N WINDS 10 TO 15 KT, SHIFTING TO NE AFTER MIDNIGHT.
SEAS 3 TO 5 FT.
MON
N WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
MON NIGHT
NE WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
TUE
N WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
TUE NIGHT
N WINDS 15 TO 25 KT. SEAS 8 TO 12 FT.
WED
N WINDS 15 TO 25 KT. SEAS 8 TO 12 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
OVERNIGHT
SE WINDS LESS THAN 10 KT. SEAS 3 FT.
SAT
W OF 70W, SE WINDS LESS THAN 10 KT, INCREASING TO 10 TO
15 KT IN THE AFTERNOON. ELSEWHERE, E WINDS 10 TO 15 KT. SEAS
3 TO 4 FT.
SAT NIGHT
N WINDS LESS THAN 10 KT W OF 70W, AND E 10 TO 15 KT
ELSEWHERE. SEAS 4 TO 6 FT.
SUN
NW WINDS LESS THAN 10 KT W OF 70W, AND SE 10 TO 15 KT
ELSEWHERE. SEAS 4 TO 6 FT W OF 70W, AND 6 TO 9 FT ELSEWHERE.
SUN NIGHT
TROPICAL STORM CONDITIONS POSSIBLE. NE WINDS 10 TO
20 KT. SEAS 6 TO 9 FT W OF 70W, AND 8 TO 11 FT ELSEWHERE.
MON
HURRICANE CONDITIONS POSSIBLE.
MON NIGHT
HURRICANE CONDITIONS POSSIBLE.
TUE
HURRICANE CONDITIONS POSSIBLE.
TUE NIGHT
HURRICANE CONDITIONS POSSIBLE.
WED
HURRICANE CONDITIONS POSSIBLE.
BAHAMAS N OF 22N
OVERNIGHT
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
SAT
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
SUN
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
SUN NIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
MON
N WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
MON NIGHT
N WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
TUE
NW WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
TUE NIGHT
NW WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED
W WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
..HURRICANE WARNING
OVERNIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SAT
TROPICAL STORM CONDITIONS POSSIBLE. E WINDS 10 TO 15 KT
W OF 70W, AND NE 15 TO 25 KT ELSEWHERE. SEAS 4 TO 6 FT.
SAT NIGHT
TROPICAL STORM CONDITIONS EXPECTED. W OF 70W, NE
WINDS 10 TO 15 KT, SEAS 4 TO 6 FT. ELSEWHERE, NE WINDS 25 TO
35 KT, INCREASING TO 40 TO 50 KT AFTER MIDNIGHT,SEAS 7 TO 10 FT,
BUILDING TO 8 TO 13 FT AFTER MIDNIGHT.
SUN
HURRICANE CONDITIONS EXPECTED. W OF 70W, NE WINDS 10 TO
20 KT, SEAS 6 TO 9 FT. ELSEWHERE, NE WINDS 65 TO 75 KT, BECOMING
E 90 TO 110 KT IN THE AFTERNOON,SEAS 12 TO 17 FT, BUILDING TO
15 TO 20 FT IN THE AFTERNOON.
SUN NIGHT
HURRICANE CONDITIONS POSSIBLE. W OF 70W, NE WINDS
15 TO 25 KT, INCREASING TO 25 TO 35 KT AFTER MIDNIGHT,SEAS 8 TO
11 FT, BUILDING TO 9 TO 14 FT AFTER MIDNIGHT. ELSEWHERE, E WINDS
100 TO 120 KT, SEAS 17 TO 22 FT.
MON
HURRICANE CONDITIONS POSSIBLE.
MON NIGHT
HURRICANE CONDITIONS POSSIBLE.
TUE
HURRICANE CONDITIONS POSSIBLE.
TUE NIGHT
HURRICANE CONDITIONS POSSIBLE.
WED
TROPICAL STORM CONDITIONS POSSIBLE.
ATLC WATERS S OF 22N W OF 65W
..HURRICANE WARNING
OVERNIGHT
NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SAT
HURRICANE CONDITIONS POSSIBLE. NE WINDS 15 TO 25 KT.
SEAS 4 TO 6 FT.
SAT NIGHT
HURRICANE CONDITIONS EXPECTED. NE WINDS 30 TO
40 KT, INCREASING TO 85 TO 105 KT AFTER MIDNIGHT. SEAS 7 TO
10 FT.
SUN
HURRICANE CONDITIONS EXPECTED. N WINDS 95 TO 115 KT.
SEAS 8 TO 13 FT.
SUN NIGHT
HURRICANE CONDITIONS POSSIBLE. NW WINDS 45 TO
55 KT, BECOMING W 30 TO 40 KT AFTER MIDNIGHT. SEAS 8 TO 11 FT.
MON
TROPICAL STORM CONDITIONS POSSIBLE.
MON NIGHT
SW WINDS 20 TO 30 KT. SEAS 6 TO 9 FT.
TUE
SW WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.
TUE NIGHT
S WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED
S WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W
..HURRICANE WARNING
OVERNIGHT
TROPICAL STORM CONDITIONS. E WINDS 60 TO 75 KT.
SEAS 11 TO 16 FT.
SAT
HURRICANE CONDITIONS EXPECTED. SE WINDS 75 TO 90 KT.
SEAS 12 TO 17 FT.
SAT NIGHT
HURRICANE CONDITIONS EXPECTED. SE WINDS 80 TO
100 KT. SEAS 11 TO 16 FT.
SUN
TROPICAL STORM CONDITIONS EXPECTED. SE WINDS 45 TO
55 KT, DIMINISHING TO 30 TO 40 KT IN THE AFTERNOON. SEAS 8 TO
13 FT.
SUN NIGHT
SE WINDS 20 TO 30 KT. SEAS 7 TO 10 FT.
MON
SE WINDS 15 TO 25 KT. SEAS 6 TO 8 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 5 TO 6 FT.
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