980 

FZPN03 KNHC 180318
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC SAT APR 18 2026

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

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.

SECURITE

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 0000 UTC SAT APR 18.
24 HOUR FORECAST VALID 0000 UTC SUN APR 19.
48 HOUR FORECAST VALID 0000 UTC MON APR 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 30N118W TO 30N127W TO 28N125W TO 28N121W TO 28N119W TO
30N118W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW TO N SWELL.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

CONVECTION VALID AT 0300 UTC SAT APR 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM NORTHWEST COLOMBIA SOUTHWESTWARD TO 07N90W
TO 05N110W. ITCZ FROM 05N110W TO 07N120W TO 05N140W. SECOND ITCZ
FROM 01.5S97W TO 03S140W. SCATTERED MODERATE FROM 04S TO 05N
BETWEEN 84W AND 106W. SIMILAR CONVECTION FROM 02.5N TO 09N
BETWEEN 116W AND 137W.

$$ .FORECASTER KRV. NATIONAL HURRICANE CENTER.






833 

FZPN40 PHFO 180327
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC SAT APR 18 2026

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

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.

THIS HIGH SEAS FORECAST USES 1-MINUTE AVERAGE WINDS WHICH MAY BE
HIGHER THAN 10-MINUTE AVERAGE WINDS.

SECURITE

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W

SYNOPSIS VALID 0000 UTC APR 18 2026.
24 HOUR FORECAST VALID 0000 UTC APR 19 2026.
48 HOUR FORECAST VALID 0000 UTC APR 20 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N148W 27N151W THENCE TROUGH 24N155W MOVING E 15 KT.
.24 HOUR FORECAST FRONT 30N140W 28N146W 27N149W. TROUGH DISSIPATED.
.48 HOUR FORECAST FRONT MOVED E OF AREA.

.TROUGH 25N169W 21N170W 13N172W NEARLY STATIONARY. ISOLATED
MODERATE TSTMS FROM 27N TO 19N BETWEEN 169W AND 166W.
.24 HOUR FORECAST TROUGH 28N168W 20N171W 14N176W.
.48 HOUR FORECAST TROUGH 30N166W 26N165W 22N167W.

.48 HOUR FORECAST NEW TROUGH 30N178W 27N180W. SEAS 2.5 TO 3 M NW
OF LINE 30N174W 25N180W.

.WINDS 20 KT OR LESS OVER ENTIRE FORECAST AREA.

.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.

.ITCZ 05N140W 06N164W 06N180W. SCATTERED MODERATE
TSTMS WITHIN 270 NM OF ITCZ.

.ISOLATED MODERATE TSTMS FROM 25N TO 22N BETWEEN 163W AND 160W...
AND FROM 20N TO 18N BETWEEN 163W AND 160W.

$$

.FORECASTER TROTTER. HONOLULU HI.






360 

FZNT01 KWBC 180332
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SAT APR 18 2026

CCODE/1:31:04:01:00/AOE/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

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.

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH
ATLANTIC ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.PHP
(ALL LOWERCASE).

SECURITE

NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 0000 UTC APR 18.
24 HOUR FORECAST VALID 0000 UTC APR 19.
48 HOUR FORECAST VALID 0000 UTC APR 20.

.WARNINGS.

...STORM WARNING...
.LOW 63N39W 985 MB MOVING N 10 KT. WITHIN 90 NM NE...240 NM SE
AND BETWEEN 60 NM AND 240 NM S AND 90 NM AND 180 NM SW QUADRANTS
WINDS 35 TO 50 KT. SEAS 4.5 TO 8.5 M. ELSEWHERE FROM 57N TO 60N W
OF 35W WINDS 25 TO 35 KT. SEAS 3 TO 6 M. ALSO N OF 60N W OF
GREENLAND WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW N OF AREA AND CONDITIONS ABSORBED BY LOW
60N36W DESCRIBED IN STORM WARNING BELOW.

...STORM WARNING...
.COMPLEX LOW WITH MAIN CENTER 52N46W 996 MB MOVING NE 20 KT AND
INTENSIFYING. WITHIN 240 NM E OF A LINE FROM THE LOW TO 45N45W
AND WITHIN 90 NM W AND NW OF A LINE FROM 51N50W TO 54N47W WINDS
30 TO 40 KT. SEAS 2.5 TO 4 M. ELSEWHERE FROM 38N TO 57N BETWEEN
35W AND 60W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
.12 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 55N38W 984 MB. NE AND
E OF A FRONT FROM THE LOW TO 50N37W TO 45N39W AND WITHIN 540 NM
SW...420 NM W AND 780 NM NW QUADRANTS WINDS 35 TO 50 KT. SEAS 4.5
TO 8 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 60N36W 976 MB AND
SECOND NEW LOW E OF THE AREA 55N30W 992 MB. N OF 60N E OF 38W AND
WITHIN 120 NM SE...540 NM S...480 NM SW AND NW QUADRANTS OF MAIN
LOW WINDS 35 TO 50 KT. SEAS 4 TO 9 M...HIGHEST NEAR 35W.
ELSEWHERE WITHIN 1200 NM S...1260 NM SW...600 NM W AND NW
QUADRANTS OF MAIN LOW AND N OF 60N W OF 38W TO E GREENLAND COAST
WINDS 25 TO 35 KT. SEAS 2.5 TO 5.5 M IN MIXED SWELL. ALSO FROM
39N TO 45N BETWEEN 50W AND 68W WINDS TO 25 KT. SEAS 2.5 TO 3.5 M.
 .30 HOUR FORECAST LOW NEAR 60N40W 970 MB. WITHIN 420 NM S...360
NM SW AND 300 NM NW QUADRANTS WINDS 40 TO 55 KT. SEAS 6 TO 10
M...HIGHEST NEAR 59N44W.
.48 HOUR FORECAST LOW 59N36W 991 MB. FROM 54N TO 62N E OF 43W
WINDS 30 TO 40 KT. SEAS 5 TO 9 M. ELSEWHERE FROM 47N TO 54N W OF
35W...INCLUDING THE GULF OF SAINT LAWRENCE AND FROM 54N TO 64W W
OF 51W WINDS 20 TO 30 KT. SEAS 4 TO 7 M IN MIXED SWELL E OF 51W
AND SEAS 2.5 TO 4 M W OF 51W.

...GALE WARNING...
.48 HOUR FORECAST NEW LOW 44N66W 1004 MB. FROM 40N TO 47N W OF
50W AND WITHIN 420 NM S AND 1020 NM SW QUADRANTS WINDS 25 TO 35
KT. SEAS TO 3.5 M.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY W OF A LINE FROM 61N56W TO
 66N54W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY IN THE GULF
OF SAINT LAWRENCE...W AND NW OF A LINE FROM 55N52W TO 59N45W AND
N OF 60N W OF GREENLAND
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY FROM 45N TO
48N BETWEEN 47W AND 55W...FROM 48N TO 50N BETWEEN 48W AND
63W...INCLUDING THE GULF OF SAINT LAWRENCE...W OF A LINE FROM
50N48W TO 60N53W AND N OF 60N W OF GREENLAND.
.48 HOUR FORECAST LIGHT FREEZING SPRAY N OF 64N W OF GREENLAND.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 120 NM W AND
NW OF A LINE FROM 39N67W TO 44N62W...FROM 44N TO 46N BETWEEN 54W
AND 58W...WITHIN 300 NM W AND NW OF A LINE FROM 42N46W TO
55N40W...WITHIN 300 NM NW AND N OF LINE FROM 55N40W TO
54N35W...WITHIN 60 NM W OF A LINE FROM 60N53W TO 65N52W AND N OF
65N W OF GREENLAND.
.24 HOUR FORECAST DENSE FOG WITHIN 120 NM N AND NE OF A LINE FROM
60N41W TO 57N35W AND N OF 64N E OF GREENLAND.
.48 HOUR FORECAST DENSE FOG FROM 40N TO 46N BETWEEN 55W AND
67W...FROM 46N TO 51N W OF 55W...INCLUDING THE GULF OF SAINT
LAWRENCE AND N OF 60N W OF 57W.

.FORECASTER FUTTERMAN. OCEAN PREDICTION CENTER.

NWS NATIONAL HURRICANE CENTER MIAMI FL

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA

SYNOPSIS VALID 0000 UTC SAT APR 18.
24 HOUR FORECAST VALID 0000 UTC SUN APR 19.
48 HOUR FORECAST VALID 0000 UTC MON APR 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 15N35W TO 15N48W TO 13N57W TO 06N54W TO 07N35W TO
15N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL.
.24 HOUR FORECAST WITHIN 10N42W TO 13N52W TO 09N55W TO 06N52W TO
07N40W TO 10N42W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE TO
E SWELL.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.ATLC 48 HOUR FORECAST WITHIN 31N77W TO 31N81W TO 30N81W TO
29N79W TO 30N78W TO 31N77W N TO NE WINDS 20 TO 25 KT. SEAS LESS
THAN 2.5 M.

.GULF OF AMERICA 30 HOUR FORECAST WITHIN 30N92W TO 30N95W TO
28N97W TO 26N97W TO 27N94W TO 28N93W TO 30N92W N TO NE WINDS 20
TO 30 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 27N93W TO 28N95W TO 28N97W TO 24N98W TO
22N98W TO 22N96W TO 27N93W NE WINDS 20 TO 25 KT. SEAS 2.5 M.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.


.FORECASTER AL. NATIONAL HURRICANE CENTER.

$$






857 

FZPN01 KWBC 180346
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SAT APR 18 2026

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

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.

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

SECURITE

PACIFIC S OF 67N AND N OF 30N E OF A LINE FROM THE BERING STRAIT
TO 53N172E TO 50N180W TO 30N180W

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 0000 UTC APR 18.
24 HOUR FORECAST VALID 0000 UTC APR 19.
48 HOUR FORECAST VALID 0000 UTC APR 20.

.WARNINGS.

...STORM WARNING...
.LOW 52N174E 968 MB MOVING NE 10 KT. FROM 48N TO 57N W OF 174W
WINDS 35 TO 50 KT. SEAS 4 TO 7 M. ELSEWHERE N OF 42N W OF 168W
WINDS 25 TO 40 KT. SEAS 2.5 TO 6 M...HIGHEST NEAR 46N180W.
.24 HOUR FORECAST LOW 56N178E 962 MB. WITHIN 360 NM SW AND NW
SEMICIRCLES WINDS 35 TO 50 KT. SEAS 4 TO 8.5 M. ELSEWHERE N OF
40N W OF 157W WINDS 25 TO 40 KT. SEAS 2.6 TO 6.5 M...HIGHEST NEAR
48N180W AND 50N170W. ALSO S OF 40N W OF 171W WINDS TO 25 KT. SEAS
2.5 TO 5 M.
.48 HOUR FORECAST LOW 58N177W 979 MB. ACROSS THE BERING SEA WINDS
25 TO 40 KT. SEAS 4 TO 8 M. ELSEWHERE N OF A LINE FROM 44N180W TO
57N146W WINDS 20 TO 30 KT. SEAS 2.5 TO 6 M. ALSO N OF A LINE FROM
30N180W TO 53N145W WINDS LESS THAN 25 KT. SEAS 2.5 TO 4.5 M.

...GALE WARNING...
.LOW W OF AREA NEAR 38N173E 992 MB MOVING NE 40 KT. FROM 32N TO
42N
W OF 171W WINDS 25 TO 35 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 56N178E
DESCRIBED ABOVE.

...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 49N142W 1004 MB MOVING SE 05 KT
AND A SECOND CENTER 39N141W 1013 MB MOVING NE 25 KT. FROM 34N TO
53N BETWEEN 130W AND 155W WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 48N139W 996 MB.
WITHIN 480 NM W SEMICIRCLE WINDS 25 TO 40 KT. SEAS 3 TO 6.5 M.
ELSEWHERE FROM 32N TO 56N BETWEEN 126W AND 153W WINDS 20 TO 30
KT. SEAS TO 4 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 41N137W 999 MB.
FROM 32N TO 50N BETWEEN 136W AND 150W WINDS 25 TO 40 KT. SEAS 3
TO 7 M...HIGHEST JUST W OF CENTER. ELSEWHERE S OF 52N BETWEEN
125W AND 151W WINDS TO 25 KT. SEAS 2.5 TO 4.5 M...HIGHEST JUST E
OF CENTER.

...HEAVY FREEZING SPRAY WARNING...
.LIGHT TO MODERATE FREEZING SPRAY N OF 59N W OF 174W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 60N
W OF 177W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF
59N W OF 174W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 60N W OF
177W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY W AND NW OF A
LINE FROM 56N177E TO 60N175W.

.SYNOPSIS AND FORECAST.

...STORM WARNING...
.LOW 52N174E 968 MB MOVING NE 10 KT. FROM 48N TO 57N W OF 174W
WINDS 35 TO 50 KT. SEAS 4 TO 7 M. ELSEWHERE N OF 42N W OF 168W
WINDS 25 TO 40 KT. SEAS 2.5 TO 6 M...HIGHEST NEAR 46N180W.
.24 HOUR FORECAST LOW 56N178E 962 MB. WITHIN 360 NM SW AND NW
SEMICIRCLES WINDS 35 TO 50 KT. SEAS 4 TO 8.5 M. ELSEWHERE N OF
40N W OF 157W WINDS 25 TO 40 KT. SEAS 2.6 TO 6.5 M...HIGHEST NEAR
48N180W AND 50N170W. ALSO S OF 40N W OF 171W WINDS TO 25 KT. SEAS
2.5 TO 5 M.
.48 HOUR FORECAST LOW 58N177W 979 MB. ACROSS THE BERING SEA WINDS
25 TO 40 KT. SEAS 4 TO 8 M. ELSEWHERE N OF A LINE FROM 44N180W TO
57N146W WINDS 20 TO 30 KT. SEAS 2.5 TO 6 M. ALSO N OF A LINE FROM
30N180W TO 53N145W WINDS LESS THAN 25 KT. SEAS 2.5 TO 4.5 M.

...GALE WARNING...
.LOW W OF AREA NEAR 38N173E 992 MB MOVING NE 40 KT. FROM 32N TO
42N
W OF 171W WINDS 25 TO 35 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 56N178E
DESCRIBED ABOVE.

...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 49N142W 1004 MB MOVING SE 05 KT
AND A SECOND CENTER 39N141W 1013 MB MOVING NE 25 KT. FROM 34N TO
53N BETWEEN 130W AND 155W WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 48N139W 996 MB.
WITHIN 480 NM W SEMICIRCLE WINDS 25 TO 40 KT. SEAS 3 TO 6.5 M.
ELSEWHERE FROM 32N TO 56N BETWEEN 126W AND 153W WINDS 20 TO 30
KT. SEAS TO 4 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 41N137W 999 MB.
FROM 32N TO 50N BETWEEN 136W AND 150W WINDS 25 TO 40 KT. SEAS 3
TO 7 M...HIGHEST JUST W OF CENTER. ELSEWHERE S OF 52N BETWEEN
125W AND 151W WINDS TO 25 KT. SEAS 2.5 TO 4.5 M...HIGHEST JUST E
OF CENTER.

...HEAVY FREEZING SPRAY WARNING...
.LIGHT TO MODERATE FREEZING SPRAY N OF 59N W OF 174W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 60N
W OF 177W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF
59N W OF 174W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 60N W OF
177W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY W AND NW OF A
LINE FROM 56N177E TO 60N175W.

.FORECASTER JOSEPH. OCEAN PREDICTION CENTER.

NWS NATIONAL HURRICANE CENTER MIAMI FL

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 0000 UTC SAT APR 18.
24 HOUR FORECAST VALID 0000 UTC SUN APR 19.
48 HOUR FORECAST VALID 0000 UTC MON APR 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 30N118W TO 30N127W TO 28N125W TO 28N121W TO 28N119W TO
30N118W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW TO N SWELL.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

CONVECTION VALID AT 0300 UTC SAT APR 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM NORTHWEST COLOMBIA SOUTHWESTWARD TO 07N90W
TO 05N110W. ITCZ FROM 05N110W TO 07N120W TO 05N140W. SECOND ITCZ
FROM 01.5S97W TO 03S140W. SCATTERED MODERATE FROM 04S TO 05N
BETWEEN 84W AND 106W. SIMILAR CONVECTION FROM 02.5N TO 09N
BETWEEN 116W AND 137W.

 .FORECASTER KRV. NATIONAL HURRICANE CENTER.

$$