158
FZNT31 KNHC 190322
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
1122 PM EDT MON AUG 18 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 CENTERED NEAR 24.4N 71.7W AT 11 PM
EDT, AND IS MOVING NORTHWEST AT 7 KT. MAXIMUM SUSTAINED WINDS
ARE 110 KT WITH GUSTS TO 135 KT, AND THE MINIMUM CENTRAL
PRESSURE IS 949 MB. ERIN WILL MOVE TO 25.4N 72.3W TUE MORNING,
27.1N 73.2W TUE EVENING, 29.2N 73.7W WED MORNING, AND CONTINUE
NORTHWARD AWAY FROM THE CARIBBEAN THROUGH LATE THIS WEEK. OUTER
BANDS OF ERIN WILL PRODUCE LOCALIZED AREAS OF HEAVY RAINFALL
ACROSS PORTIONS OF THE NORTH-CENTRAL AND NW CARIBBEAN THROUGH
TUE NIGHT. MODERATE TO FRESH SE WINDS OVER THE CENTRAL AND
EASTERN CARIBBEAN WILL BECOME EASTERLY BY TUE EVENING AS ERIN
CONTINUES TO LIFT NORTHWARD AWAY FROM THE REGION. MODERATE TO
FRESH TRADE WINDS AND MODERATE SEAS ARE THEN EXPECTED TUE NIGHT
THROUGH THE WEEKEND, INCREASING TO STRONG SPEEDS OVER THE
SOUTH-CENTRAL BASIN WED EVENING THROUGH SAT AS HIGH PRESSURE
BUILDS IN THE WAKE OF ERIN.
NW CARIBBEAN W OF 85W
OVERNIGHT
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.
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
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 10 TO 20 KT. SEAS 2 FT OR LESS, BUILDING TO
3 TO 4 FT AFTER MIDNIGHT.
SAT
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
OVERNIGHT
S OF 18N, N WINDS LESS THAN 10 KT, SHIFTING TO E
AFTER MIDNIGHT. ELSEWHERE, N WINDS 10 TO 20 KT. SEAS 2 FT OR
LESS.
TUE
SE WINDS LESS THAN 10 KT S OF 18N, AND NW 10 TO 20 KT
ELSEWHERE. 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 20 KT.
SEAS 2 FT OR LESS.
WED
SE WINDS 10 TO 20 KT. SEAS 2 FT OR LESS.
WED NIGHT
E WINDS 10 TO 20 KT. S OF 18N, SEAS 2 FT OR LESS,
BUILDING TO 3 TO 4 FT AFTER MIDNIGHT. ELSEWHERE, SEAS 2 FT OR
LESS.
THU
SE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT S OF 18N, AND 2 FT
OR LESS ELSEWHERE.
THU NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 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.
FRI NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT S OF 18N, AND
2 FT OR LESS ELSEWHERE.
SAT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
CARIBBEAN FROM 11N TO 15N W OF 72W
OVERNIGHT
NE WINDS LESS THAN 10 KT, SHIFTING TO E AFTER
MIDNIGHT. SEAS 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 3 TO 5 FT WITHIN 90 NM OF
COAST OF COLOMBIA, AND 2 FT OR LESS ELSEWHERE.
WED
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
WED NIGHT
NE WINDS 15 TO 25 KT. SEAS 3 TO 5 FT.
THU
E WINDS 15 TO 25 KT. SEAS 5 TO 7 FT WITHIN 90 NM OF COAST
OF COLOMBIA, AND 4 TO 6 FT ELSEWHERE.
THU NIGHT
E WINDS 15 TO 25 KT. SEAS 3 TO 5 FT.
FRI
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
FRI NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SAT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SW CARIBBEAN S OF 11N
OVERNIGHT
NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
TUE
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
TUE NIGHT
NE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
WED
N WINDS 10 TO 15 KT. SEAS 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
NW WINDS 10 TO 15 KT. SEAS 3 FT.
THU NIGHT
NW WINDS 10 TO 15 KT. SEAS 3 FT.
FRI
SW WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
FRI NIGHT
W WINDS LESS THAN 10 KT, SHIFTING TO SW AFTER
MIDNIGHT. SEAS 3 TO 4 FT.
SAT
S WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 3 TO 4 FT.
CARIBBEAN BETWEEN 64W AND 72W
OVERNIGHT
SE WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
TUE
GULF OF VENEZUELA, E WINDS 10 TO 15 KT, SHIFTING TO SE IN
THE AFTERNOON. ELSEWHERE, SE WINDS 10 TO 20 KT. SEAS 2 FT OR
LESS GULF OF VENEZUELA, AND 3 TO 4 FT ELSEWHERE.
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 15 TO 25 KT. SEAS 4 TO 6 FT.
THU
E WINDS 15 TO 25 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 4 TO 6 FT.
FRI NIGHT
E WINDS 10 TO 20 KT. SEAS 2 FT OR LESS GULF OF
VENEZUELA, AND 3 TO 5 FT ELSEWHERE.
SAT
SE WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO
19N W OF 55W
OVERNIGHT
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 20 KT. SEAS 4 TO 6 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
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
SE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
FRI NIGHT
SE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SAT
SE WINDS 10 TO 20 KT. SEAS 5 TO 7 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.
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 20 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.
FRI NIGHT
SE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SAT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
HURRICANE ERIN IS NEAR 24.4N 71.7W AT 11 PM EDT, AND
IS MOVING NORTHWEST AT 7 KT. MAXIMUM SUSTAINED WINDS ARE 110 KT
WITH GUSTS TO 135 KT, AND THE MINIMUM CENTRAL PRESSURE IS
949 MB. ERIN WILL MOVE TO 25.4N 72.3W TUE MORNING, 27.1N 73.2W
TUE EVENING, 29.2N 73.7W WED MORNING, 31.4N 73.5W WED EVENING,
33.5N 72.5W THU MORNING, AND 35.4N 70.0W THU EVENING. ERIN WILL
CHANGE LITTLE IN INTENSITY AS IT MOVES NEAR 38.5N 62.9W LATE FRI.
SWELLS GENERATED BY ERIN WILL AFFECT THE BAHAMAS, BERMUDA, THE
EAST COAST OF THE UNITED STATES, AND ATLANTIC CANADA DURING THE
NEXT SEVERAL DAYS. THESE ROUGH OCEAN CONDITIONS ARE EXPECTED TO
CAUSE LIFE- THREATENING SURF AND RIP CURRENTS. OTHERWISE, A
TROPICAL WAVE LOCATED OVER THE CENTRAL TROPICAL ATLANTIC IS
PRODUCING SOME DISORGANIZED SHOWERS AND THUNDERSTORMS.
ENVIRONMENTAL CONDITIONS APPEAR CONDUCIVE FOR GRADUAL DEVELOPMENT
OF THIS SYSTEM, AND A TROPICAL DEPRESSION COULD FORM TOWARD THE
END OF THE WEEK AS THE SYSTEM APPROACHES THE OFFSHORE WATERS OF
PUERTO RICO.
ATLC WATERS FROM 27N TO 31N W OF 77W
OVERNIGHT
NE WINDS 10 TO 15 KT. SEAS 8 TO 13 FT.
TUE
NE WINDS 10 TO 20 KT. SEAS 10 TO 15 FT.
TUE NIGHT
NE WINDS 20 TO 30 KT. SEAS 13 TO 18 FT.
WED
TROPICAL STORM CONDITIONS POSSIBLE. N WINDS 20 TO 30 KT.
SEAS 16 TO 21 FT.
WED NIGHT
TROPICAL STORM CONDITIONS POSSIBLE. NW WINDS 20 TO
30 KT. SEAS 14 TO 19 FT.
THU
NW WINDS 10 TO 20 KT. SEAS 10 TO 15 FT.
THU NIGHT
W WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT
AFTER MIDNIGHT. SEAS 8 TO 11 FT.
FRI
N WINDS LESS THAN 10 KT. SEAS 7 TO 10 FT.
FRI NIGHT
SE WINDS 10 TO 15 KT. SEAS 7 TO 9 FT.
SAT
S WINDS LESS THAN 10 KT. SEAS 6 TO 9 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
..HURRICANE WARNING
OVERNIGHT
TROPICAL STORM CONDITIONS. E WINDS 30 TO 40 KT W
OF 70W, AND SE 25 TO 35 KT ELSEWHERE. SEAS 15 TO 20 FT W OF 70W,
AND 11 TO 16 FT ELSEWHERE.
TUE
TROPICAL STORM CONDITIONS EXPECTED. W OF 70W, E WINDS
35 TO 45 KT, INCREASING TO 55 TO 65 KT IN THE AFTERNOON,SEAS
15 TO 25 FT, BUILDING TO 19 TO 29 FT IN THE AFTERNOON.
ELSEWHERE, SE WINDS 30 TO 40 KT, SEAS 13 TO 18 FT.
TUE NIGHT
HURRICANE CONDITIONS EXPECTED. E WINDS 85 TO
105 KT W OF 70W, AND SE 30 TO 40 KT ELSEWHERE. W OF 70W, SEAS
24 TO 34 FT, BUILDING TO 27 TO 37 FT AFTER MIDNIGHT. ELSEWHERE,
SEAS 13 TO 18 FT.
WED
HURRICANE CONDITIONS EXPECTED. W OF 70W, SE WINDS 90 TO
110 KT, SHIFTING TO SW IN THE AFTERNOON. ELSEWHERE, S WINDS
25 TO 35 KT. SEAS 28 TO 38 FT W OF 70W, AND 13 TO 18 FT
ELSEWHERE.
WED NIGHT
HURRICANE CONDITIONS POSSIBLE. W OF 70W, SW WINDS
85 TO 105 KT, DIMINISHING TO 60 TO 70 KT AFTER MIDNIGHT,SEAS
23 TO 33 FT, SUBSIDING TO 16 TO 26 FT AFTER MIDNIGHT. ELSEWHERE,
S WINDS 30 TO 40 KT, SEAS 12 TO 17 FT.
THU
TROPICAL STORM CONDITIONS POSSIBLE.
THU NIGHT
SW WINDS 20 TO 30 KT. SEAS 11 TO 16 FT.
FRI
W OF 70W, W WINDS 15 TO 25 KT, SHIFTING TO NW 10 TO 15 KT
IN THE AFTERNOON. ELSEWHERE, SW WINDS 20 TO 30 KT. SEAS 9 TO
14 FT W OF 70W, AND 11 TO 16 FT ELSEWHERE.
FRI NIGHT
NE WINDS LESS THAN 10 KT W OF 70W, AND W 15 TO
25 KT ELSEWHERE. SEAS 9 TO 13 FT W OF 70W, AND 11 TO 16 FT
ELSEWHERE.
SAT
W OF 70W, SE WINDS LESS THAN 10 KT. ELSEWHERE, SW WINDS
10 TO 15 KT, SHIFTING TO S IN THE AFTERNOON. SEAS 8 TO 12 FT W
OF 70W, AND 11 TO 14 FT ELSEWHERE.
BAHAMAS N OF 22N
..TROPICAL STORM WARNING
OVERNIGHT
TROPICAL STORM CONDITIONS POSSIBLE. N WINDS 25 TO
35 KT. SEAS 8 TO 11 FT.
TUE
TROPICAL STORM CONDITIONS POSSIBLE. NW WINDS 20 TO
30 KT. SEAS 8 TO 11 FT.
TUE NIGHT
W WINDS 20 TO 30 KT. SEAS 7 TO 10 FT.
WED
W WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
WED NIGHT
SW WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
THU
SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
THU NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI
W WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
FRI NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SAT
E 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. NE WINDS 85 TO 105 KT W OF
70W, AND SE 40 TO 50 KT ELSEWHERE. SEAS 24 TO 34 FT W OF 70W,
AND 16 TO 21 FT ELSEWHERE.
TUE
HURRICANE CONDITIONS EXPECTED. SW WINDS 85 TO 105 KT W
OF 70W, AND S 35 TO 45 KT ELSEWHERE. SEAS 24 TO 34 FT W OF 70W,
AND 14 TO 19 FT ELSEWHERE.
TUE NIGHT
HURRICANE CONDITIONS EXPECTED. W OF 70W, SW WINDS
80 TO 100 KT, DIMINISHING TO 60 TO 70 KT AFTER MIDNIGHT,SEAS
18 TO 28 FT, SUBSIDING TO 17 TO 22 FT AFTER MIDNIGHT. ELSEWHERE,
S WINDS 30 TO 40 KT, SEAS 11 TO 16 FT.
WED
TROPICAL STORM CONDITIONS EXPECTED. W OF 70W, SW WINDS
35 TO 45 KT, DIMINISHING TO 20 TO 30 KT IN THE AFTERNOON.
ELSEWHERE, S WINDS 20 TO 30 KT. SEAS 13 TO 18 FT W OF 70W, AND
8 TO 13 FT ELSEWHERE.
WED NIGHT
S WINDS 20 TO 30 KT. W OF 70W, SEAS 10 TO 15 FT,
SUBSIDING TO 8 TO 11 FT AFTER MIDNIGHT. ELSEWHERE, SEAS 7 TO
10 FT.
THU
S WINDS 15 TO 25 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. SEAS 6 TO 9 FT.
FRI NIGHT
S WINDS LESS THAN 10 KT W OF 70W, AND E 10 TO 20 KT
ELSEWHERE. SEAS 7 TO 10 FT.
SAT
W OF 70W, S WINDS LESS THAN 10 KT, SHIFTING TO N IN THE
AFTERNOON. ELSEWHERE, E WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.
ATLC WATERS S OF 22N W OF 65W
..TROPICAL STORM WARNING
OVERNIGHT
TROPICAL STORM CONDITIONS POSSIBLE. S WINDS 25 TO
35 KT. SEAS 8 TO 11 FT.
TUE
S WINDS 20 TO 30 KT. SEAS 7 TO 10 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 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 15 KT. SEAS 3 TO 5 FT.
FRI NIGHT
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SAT
NE WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W
OVERNIGHT
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 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 8 FT.
FRI
E WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
FRI NIGHT
SE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
SAT
SE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.
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