953 

FZPN03 KNHC 180910
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SAT APR 18.
24 HOUR FORECAST VALID 0600 UTC SUN APR 19.
48 HOUR FORECAST VALID 0600 UTC MON APR 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 30N120W TO 30N126W TO 29N126W TO 28N124W TO 28N121W TO
30N120W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW TO N SWELL.
.06 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.42 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N95W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 30 KT.
SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 15N94W TO 16N94W TO 16N95W TO 15N96W TO
14N96W TO 14N95W TO 15N94W...INCLUDING THE GULF OF
TEHUANTEPEC...N WINDS 20 TO 30 KT. SEAS TO 2.5 M.

.48 HOUR FORECAST WITHIN 30N136W TO 30N140W TO 29N140W TO
29N138W TO 29N137W TO 30N136W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN NW TO N SWELL.

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

CONVECTION VALID AT 0842 UTC SAT APR 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM NORTHWEST COLOMBIA TO 05N90W TO 04N116W. ITCZ
FROM 04N116W TO 05N140W. SECOND ITCZ FROM 02S97W TO 03S138W.
SCATTERED MODERATE FROM 03.5S TO 06N BETWEEN 84W AND 107W.
SIMILAR CONVECTION FROM 04.5N TO 10N BETWEEN 116W AND 127W.

$$
.FORECASTER KRV. NATIONAL HURRICANE CENTER.






737 

FZPN01 KWBC 180958
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC APR 18.
24 HOUR FORECAST VALID 0600 UTC APR 19.
48 HOUR FORECAST VALID 0600 UTC APR 20.

.WARNINGS.

...STORM WARNING...
.LOW 53N176E 963 MB MOVING NE 10 KT. FROM 50N TO 59N W OF 173W
WINDS 35 TO 50 KT. SEAS 3.5 TO 7.5 M. ELSEWHERE N OF 43N W OF
164W WINDS 25 TO 40 KT. SEAS 2.5 TO 6.5 M...HIGHEST NEAR
48N178W.
.24 HOUR FORECAST LOW 57N179E 963 MB. WITHIN 360 NM OF
CENTER...EXCEPT E QUADRANT...WINDS 35 TO 50 KT. SEAS 4.5 TO 8.5
M. ELSEWHERE N OF 42N W OF 151W WINDS 25 TO 40 KT. SEAS 2.5 TO 7
M...HIGHEST NEAR 53N168W AND 50N179W.
.48 HOUR FORECAST LOW 58N176W 988 MB. WITHIN 480 NM SE QUADRANT
WINDS 30 TO 45 KT. SEAS 4.5 TO 7.5 M. ELSEWHERE N OF A LINE FROM
43N180W TO 54N154W TO 56N138W WINDS 25 TO 35 KT. SEAS 3 TO 6 M.
ALSO WITHIN 600 NM SE OF THE LINE WINDS LESS THAN 25 KT. SEAS TO
4 M.

...GALE WARNING...
.LOW W OF AREA NEAR 39N178E 996 MB MOVING NE 30 KT. FROM 33N TO
43N W OF 170W WINDS 25 TO 40 KT. SEAS 2.5 TO 5.5 M...HIGHEST NEAR
180W.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW
57N179E DESCRIBED ABOVE.

...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 49N141W 999 MB MOVING SE 10 KT AND
SECOND CENTER 42N137W 1011 MB MOVING NE 20 KT THEN TURNING N
AFTER 12 HOURS. FROM 35N TO 54N BETWEEN 128W AND 155W WINDS 20 TO
30 KT. SEAS TO 3 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 46N138W 996 MB.
WITHIN 420 NM W SEMICIRCLE WINDS 25 TO 40 KT. SEAS 3.5 TO 7 M.
ELSEWHERE FROM 32N TO 55N BETWEEN 126W AND 151W WINDS 20 TO 30
KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 39N137W 1003 MB. S
OF 50N BETWEEN 135W AND 150W WINDS 25 TO 40 KT. SEAS 3.5 TO 7 M.
ELSEWHERE S OF 50N BETWEEN 124W AND 152W WINDS TO 25 KT. SEAS 2.5
TO 4.5 M.

...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 LIGHT TO MODERATE FREEZING SPRAY W AND NW OF A
LINE FROM 57N175E TO 60N175W.

.SYNOPSIS AND FORECAST.

.LOW 59N149W 1008 MB MOVING E 05 KT. WITHIN 240 NM SW AND W
QUADRANTS WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

.FROM 30N TO 40N BETWEEN 118W AND 127W N TO NW WINDS LESS THAN 25
KT. SEAS TO 3 M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.24 HOUR FORECAST S OF 42N W OF 169W WINDS 20 TO 30 KT. SEAS 2.5
TO 4.5 M.
.48 HOUR FORECAST S OF 40N W OF 165W WINDS LESS THAN 25 KT. SEAS
TO 3.5 M.

.24 HOUR FORECAST S OF 35N BETWEEN 153W AND 169W WINDS TO 25 KT.
SEAS TO 2.5 M.
.48 HOUR FORECAST NEW LOW 33N163W 1014 MB. S OF 38N BETWEEN 152W
AND 167W WINDS 20 TO 30 KT. SEAS TO 3 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 51N W OF
163W...N OF 47N BETWEEN 135W AND 147W...AND FROM 43N TO 48N
BETWEEN 131W AND 134W.
.24 HOUR FORECAST DENSE FOG N OF 54N W OF 174W AND WITHIN 90 NM
OF 43N139W.
.48 HOUR FORECAST DENSE FOG N OF 57N BETWEEN 170W AND 178E...N OF
58N BETWEEN 139W AND 144W...AND WITHIN 120 NM NW OF A LINE FROM
51N175E TO 55N163W.

.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 0600 UTC SAT APR 18.
24 HOUR FORECAST VALID 0600 UTC SUN APR 19.
48 HOUR FORECAST VALID 0600 UTC MON APR 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 30N120W TO 30N126W TO 29N126W TO 28N124W TO 28N121W TO
30N120W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW TO N SWELL.
.06 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.42 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N95W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 30 KT.
SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 15N94W TO 16N94W TO 16N95W TO 15N96W TO
14N96W TO 14N95W TO 15N94W...INCLUDING THE GULF OF
TEHUANTEPEC...N WINDS 20 TO 30 KT. SEAS TO 2.5 M.

.48 HOUR FORECAST WITHIN 30N136W TO 30N140W TO 29N140W TO
29N138W TO 29N137W TO 30N136W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN NW TO N SWELL.

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

CONVECTION VALID AT 0842 UTC SAT APR 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM NORTHWEST COLOMBIA TO 05N90W TO 04N116W. ITCZ
FROM 04N116W TO 05N140W. SECOND ITCZ FROM 02S97W TO 03S138W.
SCATTERED MODERATE FROM 03.5S TO 06N BETWEEN 84W AND 107W.
SIMILAR CONVECTION FROM 04.5N TO 10N BETWEEN 116W AND 127W.


.FORECASTER KRV. NATIONAL HURRICANE CENTER.

$$