559
FZNT31 KNHC 162120
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
520 PM EDT SAT AUG 16 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 20.0N 64.0W AT 5 PM
EDT, AND IS MOVING WEST AT 13 KT. MAXIMUM SUSTAINED WINDS ARE
140 KT WITH GUSTS TO 170 KT, AND THE MINIMUM CENTRAL PRESSURE IS
915 MB. ERIN WILL MOVE TO NEAR 20.4N 65.7W LATE TONIGHT,
MAINTAIN INTENSITY AS IT MOVES TO NEAR 21.4N 67.6W SUN
AFTERNOON, TO NEAR 22.7N 69.2W LATE SUN NIGHT WITH MAXIMUM
SUSTAINED WINDS 135 KT GUSTS TO 165 KT, AND CONTINUE TO SLOWLY
WEAKEN AS IT MOVES TO NEAR 24.0N 70.2W MON AFTERNOON AND
CONTINUE NORTHWARD WELL NORTH OF THE REGION AS IT SLOWLY
WEAKENS. PERIPHERY MODERATE TO FRESH SOUTH TO SOUTHWEST WINDS
OVER NORTHEASTERN CARIBBEAN WILL DIMINISH TO GENTLE SPEEDS ON
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
TONIGHT
NE WINDS LESS THAN 10 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. 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.
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.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
TONIGHT
S OF 18N, NE WINDS 10 TO 15 KT, DIMINISHING TO LESS
THAN 10 KT AFTER MIDNIGHT. ELSEWHERE, NE WINDS 10 TO 20 KT. SEAS
3 FT IN THE EVENING, SUBSIDING TO 2 FT OR LESS.
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
S OF 18N, W WINDS LESS THAN 10 KT. ELSEWHERE, NE WINDS
10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT 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
S OF 18N, SE WINDS 10 TO 15 KT. ELSEWHERE, SW WINDS 10 TO
15 KT, DIMINISHING TO LESS THAN 10 KT IN THE AFTERNOON. SEAS
2 FT OR LESS.
WED NIGHT
E WINDS 10 TO 15 KT S OF 18N, AND SE LESS THAN
10 KT ELSEWHERE. SEAS 2 FT OR LESS.
THU
S OF 18N, E WINDS 10 TO 20 KT. ELSEWHERE, SE WINDS LESS
THAN 10 KT, INCREASING TO 10 TO 15 KT IN THE AFTERNOON. SEAS
2 FT OR LESS.
CARIBBEAN FROM 11N TO 15N W OF 72W
TONIGHT
NE WINDS LESS THAN 10 KT. SEAS 3 FT.
SUN
NE WINDS 10 TO 15 KT, SHIFTING TO NW IN THE AFTERNOON.
SEAS 3 FT.
SUN NIGHT
NW WINDS LESS THAN 10 KT. SEAS 3 FT.
MON
SW WINDS 10 TO 15 KT. SEAS 3 FT.
MON NIGHT
W WINDS LESS THAN 10 KT, SHIFTING TO NE AFTER
MIDNIGHT. SEAS 2 FT OR LESS.
TUE
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
TUE NIGHT
WITHIN 90 NM OF COAST OF COLOMBIA, NE WINDS LESS
THAN 10 KT, SHIFTING TO E AFTER MIDNIGHT. ELSEWHERE, E WINDS
10 TO 15 KT. SEAS 2 FT OR LESS.
WED
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 2 FT OR LESS, BUILDING TO
3 FT AFTER MIDNIGHT.
THU
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
SW CARIBBEAN S OF 11N
TONIGHT
NW WINDS 10 TO 15 KT. SEAS 3 FT.
SUN
W WINDS LESS THAN 10 KT. SEAS 2 TO 3 FT.
SUN NIGHT
W WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
MON
SW 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. SEAS 2 FT OR LESS.
TUE NIGHT
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
WED
NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
WED NIGHT
NE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
THU
N WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
CARIBBEAN BETWEEN 64W AND 72W
TONIGHT
GULF OF VENEZUELA, NE WINDS LESS THAN 10 KT.
ELSEWHERE, N WINDS 10 TO 20 KT, SHIFTING TO SW AFTER MIDNIGHT.
SEAS 3 FT.
SUN
GULF OF VENEZUELA, VARIABLE WINDS LESS THAN 10 KT,
BECOMING W LESS THAN 10 KT IN THE AFTERNOON. 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 IN THE
EVENING, BECOMING VARIABLE WINDS LESS THAN 10 KT. ELSEWHERE, S
WINDS 10 TO 20 KT. SEAS 2 FT OR LESS GULF OF VENEZUELA, AND 3 TO
4 FT ELSEWHERE.
MON
GULF OF VENEZUELA, VARIABLE WINDS LESS THAN 10 KT,
BECOMING NW 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 4 FT
ELSEWHERE.
MON NIGHT
SE WINDS 10 TO 20 KT. SEAS 3 FT.
TUE
NE WINDS LESS THAN 10 KT GULF OF VENEZUELA, AND SE 10 TO
15 KT ELSEWHERE. SEAS 2 FT OR LESS GULF OF VENEZUELA, AND 3 FT
ELSEWHERE.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS GULF OF
VENEZUELA, AND 3 FT ELSEWHERE.
WED
E WINDS 10 TO 15 KT. SEAS 3 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
THU
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO
19N W OF 55W
TONIGHT
TROPICAL STORM CONDITIONS POSSIBLE. S WINDS 20 TO
30 KT. SEAS 8 TO 12 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 4 TO 6 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
WED
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 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
TONIGHT
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 5 FT.
WED
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
THU
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
MAJOR HURRICANE ERIN IS NEAR 20.0N 64.0W AT 5 PM
EDT,
AND IS MOVING WEST AT 13 KT. MAXIMUM SUSTAINED WINDS ARE 140 KT
WITH GUSTS TO 170 KT, AND THE MINIMUM CENTRAL PRESSURE IS
915 MB. ERIN WILL MOVE TO NEAR 20.4N 65.7W LATE TONIGHT,
MAINTAIN INTENSITY AS IT MOVES TO NEAR 21.4N 67.6W SUN
AFTERNOON, TO NEAR 22.7N 69.2W LATE SUN NIGHT WITH MAXIMUM
SUSTAINED WINDS 135 KT GUSTS TO 165 KT, AND CONTINUE TO SLOWLY
WEAKEN AS IT MOVES TO NEAR 24.0N 70.2W MON AFTERNOON, TO NEAR
25.5N 70.9W LATE MON NIGHT, AND TO NEAR 27.3N 71.3W TUE
AFTERNOON WITH MAXIMUM SUSTAINED WINDS 120 KT GUSTS TO 145 KT.
ERIN IS FORECAST TO CHANGE LITTLE IN INTENSITY AS IT MOVES TO
NEAR 31.7N 70.8W WED AFTERNOON, AND CONTINUE TO WEAKEN AS IT
PULLS WELL NORTH OF 31N THROUGH THU NIGHT. SWELLS GENERATED BY
ERIN WILL AFFECT PORTIONS OF THE NORTHERN LEEWARD ISLANDS, THE
VIRGIN ISLANDS, PUERTO RICO, HISPANIOLA, AND THE TURKS AND
CAICOS ISLANDS THROUGH THE REST OF THE WEEKEND. THESE SWELLS
WILL SPREAD TO THE BAHAMAS, BERMUDA, AND THE EAST COAST OF THE
UNITED STATES EARLY NEXT WEEK. OTHERWISE, HIGH PRESSURE WILL
RIDGING WILL BEGIN TO RIDGE SOUTHWARD OFF THE SOUTHEAST U.S. ON
SUN. THE GRADIENT BETWEEN THE RIDGE AND ERIN WILL PROMOTE
MODERATE TO FRESH NORTH TO NORTHEAST WINDS OFFSHORE NORTHERN
FLORIDA TO NEAR 74W 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
TONIGHT
NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
SUN
NW WINDS LESS THAN 10 KT. SEAS 3 FT.
SUN NIGHT
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
MON
NE WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
MON NIGHT
NE WINDS 10 TO 15 KT. SEAS 8 TO 11 FT.
TUE
N WINDS 10 TO 20 KT. SEAS 8 TO 12 FT.
TUE NIGHT
N WINDS 10 TO 20 KT. SEAS 9 TO 13 FT.
WED
N WINDS 10 TO 20 KT. SEAS 9 TO 13 FT.
WED NIGHT
NW TO N WINDS 10 TO 15 KT. SEAS 8 TO 12 FT.
THU
NW WINDS LESS THAN 10 KT. SEAS 7 TO 10 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
TONIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT W OF 70W, AND
4 TO 6 FT ELSEWHERE.
SUN
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT W OF 70W, AND 7 TO
10 FT ELSEWHERE.
SUN NIGHT
N WINDS 10 TO 20 KT W OF 70W, AND SE 15 TO 25 KT
ELSEWHERE. SEAS 7 TO 10 FT.
MON
TROPICAL STORM CONDITIONS POSSIBLE. NE WINDS 20 TO 30 KT
W OF 70W, AND SE 20 TO 30 KT ELSEWHERE. SEAS 9 TO 14 FT.
MON NIGHT
HURRICANE CONDITIONS POSSIBLE. E WINDS 25 TO
35 KT, INCREASING TO 35 TO 45 KT AFTER MIDNIGHT. SEAS 11 TO
16 FT, BUILDING TO 15 TO 20 FT AFTER MIDNIGHT.
TUE
HURRICANE CONDITIONS POSSIBLE.
TUE NIGHT
HURRICANE CONDITIONS POSSIBLE.
WED
HURRICANE CONDITIONS POSSIBLE.
WED NIGHT
HURRICANE CONDITIONS POSSIBLE.
THU
W WINDS 15 TO 25 KT W OF 70W, AND SW 20 TO 30 KT
ELSEWHERE. SEAS 8 TO 11 FT W OF 70W, AND 10 TO 15 FT ELSEWHERE.
BAHAMAS N OF 22N
TONIGHT
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
SUN
NE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS, BUILDING TO 3 FT
IN THE AFTERNOON.
SUN NIGHT
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
MON
TROPICAL STORM CONDITIONS POSSIBLE. N WINDS 15 TO 25 KT.
SEAS 6 TO 9 FT.
MON NIGHT
NW WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
TUE
NW WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
TUE NIGHT
W WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
WED
W WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
THU
SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
..HURRICANE WARNING
TONIGHT
TROPICAL STORM CONDITIONS. NE WINDS 10 TO 20 KT W OF
70W, AND NE 25 TO 35 KT ELSEWHERE. W OF 70W, SEAS 4 TO 6 FT.
ELSEWHERE, SEAS 7 TO 10 FT, BUILDING TO 10 TO 15 FT AFTER
MIDNIGHT.
SUN
TROPICAL STORM CONDITIONS EXPECTED. W OF 70W, NE WINDS
10 TO 20 KT, INCREASING TO 20 TO 30 KT IN THE AFTERNOON,SEAS
5 TO 7 FT, BUILDING TO 7 TO 10 FT IN THE AFTERNOON. ELSEWHERE, E
WINDS 30 TO 40 KT, INCREASING TO 45 TO 55 KT IN THE
AFTERNOON,SEAS 13 TO 18 FT, BUILDING TO 17 TO 22 FT IN THE
AFTERNOON.
SUN NIGHT
HURRICANE CONDITIONS EXPECTED. W OF 70W, N WINDS
20 TO 30 KT, INCREASING TO 40 TO 50 KT AFTER MIDNIGHT,SEAS 10 TO
15 FT, BUILDING TO 13 TO 18 FT AFTER MIDNIGHT. ELSEWHERE, E
WINDS 105 TO 125 KT, SEAS 18 TO 28 FT.
MON
HURRICANE CONDITIONS EXPECTED. W OF 70W, N WINDS 70 TO
80 KT, INCREASING TO 100 TO 120 KT IN THE AFTERNOON,SEAS 15 TO
20 FT, BUILDING TO 17 TO 27 FT IN THE AFTERNOON. ELSEWHERE, SE
WINDS 105 TO 125 KT, SEAS 19 TO 29 FT.
MON NIGHT
HURRICANE CONDITIONS POSSIBLE. W OF 70W, NW WINDS
105 TO 125 KT. ELSEWHERE, S WINDS 65 TO 85 KT, DIMINISHING TO
60 TO 70 KT AFTER MIDNIGHT. SEAS 19 TO 29 FT.
TUE
HURRICANE CONDITIONS POSSIBLE.
TUE NIGHT
HURRICANE CONDITIONS POSSIBLE.
WED
TROPICAL STORM CONDITIONS POSSIBLE.
WED NIGHT
SW WINDS 15 TO 25 KT W OF 70W, AND S 20 TO 30 KT
ELSEWHERE. SEAS 7 TO 10 FT.
THU
S WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
ATLC WATERS S OF 22N W OF 65W
..HURRICANE WARNING
TONIGHT
HURRICANE CONDITIONS. N WINDS 35 TO 45 KT,
INCREASING TO 100 TO 120 KT AFTER MIDNIGHT. SEAS 7 TO 10 FT,
BUILDING TO 11 TO 16 FT AFTER MIDNIGHT.
SUN
HURRICANE CONDITIONS EXPECTED. N WINDS 105 TO 125 KT.
SEAS 14 TO 19 FT.
SUN NIGHT
HURRICANE CONDITIONS EXPECTED. W WINDS 105 TO
125 KT, DIMINISHING TO 55 TO 65 KT LATE. SEAS 10 TO 15 FT.
MON
TROPICAL STORM CONDITIONS EXPECTED. SW WINDS 35 TO
45 KT, DIMINISHING TO 20 TO 30 KT IN THE AFTERNOON. SEAS 9 TO
14 FT.
MON NIGHT
SW WINDS 20 TO 30 KT. SEAS 7 TO 10 FT.
TUE
S WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
TUE NIGHT
S WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
WED
S WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
THU
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W
..HURRICANE WARNING
TONIGHT
HURRICANE CONDITIONS. SE WINDS 105 TO 125 KT,
DIMINISHING TO 80 TO 100 KT AFTER MIDNIGHT. SEAS 11 TO 16 FT.
SUN
TROPICAL STORM CONDITIONS EXPECTED. SE WINDS 30 TO
40 KT. 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 9 FT.
MON NIGHT
SE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
TUE
SE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
TUE NIGHT
SE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
WED
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 6 FT.
THU
E WINDS 10 TO 20 KT. SEAS 6 TO 7 FT.
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