High Seas Forecast from National Weather Service

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FZPN02 KWBC 181125
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC SAT MAY 18 2024

CCODE/1:31:12:01:00/AOW+POR/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 
[email protected](LOWERCASE).

SECURITE

PACIFIC N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT 
TO 50N 160E

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 0600 UTC MAY 18. 
24 HOUR FORECAST VALID 0600 UTC MAY 19.
48 HOUR FORECAST VALID 0600 UTC MAY 20.

.WARNINGS.

...GALE WARNING...
.FROM 36N TO 44N BETWEEN 124W AND 129W AREA OF NW WINDS 25 TO 35
KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST FROM 36N TO 43N BETWEEN 123W AND 128W AREA OF
NW WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST FROM 34N TO 43N BETWEEN 121W AND 129W AREA OF
NW WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 59N172W 1003 MB MOVING SE 20 KT AND
SECOND CENTER 53N165W 1006 MB MOVING NE 20 KT. WITHIN 420 NM SW
QUADRANT OF MAIN CENTER...AND WITHIN 300 NM E SEMICIRCLE OF
SECOND CENTER WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 58N159W 1000 MB
AND SECOND CENTER 57N153W 1001 MB. WITHIN AN AREA BOUNDED BY A
LINE FROM 51N142W TO 53N165W TO MAIN CENTER TO 61N153W TO 60N146W
TO 58N142W TO 51N142W WINDS 25 TO 35 KT. SEAS TO 12 FT.
.48 HOUR FORECAST COMBINED LOW 59N143W 1010 MB. WITHIN 240 NM S
SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 12 FT.

...GALE WARNING...
.LOW W OF AREA NEAR 53N162E 1000 MB MOVING NE 05 KT. WITHIN 360
NM E QUADRANT WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW W OF AREA NEAR 54N164E 999 MB. WITHIN 540
NM NE...AND 600 NM SW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW W OF AREA NEAR 55N170E 996 MB. W OF A LINE
FROM 58N178E TO 51N175W TO 46N168E WINDS 25 TO 35 KT. SEAS 8 TO
14 FT.

.SYNOPSIS AND FORECAST.

.LOW 32N169W 996 MB NEARLY STATIONARY. S OF A LINE FROM 30N178W
TO 35N178W TO 40N163W TO 40N157W TO 34N152W WINDS 20 TO 30 KT.
SEAS 8 TO 15 FT.
.24 HOUR FORECAST LOW 32N168W 1000 MB. WITHIN 360 NM OF
CENTER...EXCEPT WITHIN 720 NM E QUADRANT WINDS 20 TO 30 KT. SEAS
8 TO 12 FT.
.48 HOUR FORECAST LOW 34N167W 1010 MB. BETWEEN 240 NM AND 660 NM
E QUADRANT WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

.24 HOUR FORECAST FROM 47N TO 50N BETWEEN 126W AND 130W AREA OF
NW WINDS 20 TO 30 KT. SEAS TO 8 FT.
.48 HOUR FORECAST FROM 47N TO 50N BETWEEN 126W AND 130W AREA OF
NW WINDS 20 TO 30 KT. SEAS TO 9 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 58N W OF
165W...FROM 47N TO 52N BETWEEN 172W AND 165W...AND W OF A LINE
FROM 44N174E TO 54N167E.
.24 HOUR FORECAST DENSE FOG FROM 57N TO 62N BETWEEN 172W AND
152W...FROM 40N TO 44N BETWEEN 167W AND 158W...AND FROM 42N TO
54N BETWEEN 171E AND 176E.
.48 HOUR FORECAST DENSE FOG FROM 40N TO 50N BETWEEN 169W AND
145W...AND FROM 53N TO 56N W OF 170W.

.FORECASTER BYRD. 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 MAY 18.
24 HOUR FORECAST VALID 0600 UTC SUN MAY 19.
48 HOUR FORECAST VALID 0600 UTC MON MAY 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FROM 06N TO 13N W OF 136W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT 
IN SW SWELL.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.FROM 10N TO 12N BETWEEN 100W AND 105W WINDS 20 KT OR LESS. SEAS 
TO 8 FT IN S TO SW SWELL.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.NW OF A LINE FROM 30N138W TO 29N140W WINDS 20 KT OR LESS. SEAS 
8 TO 9 FT IN NE SWELL.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.S OF 02S BETWEEN 115W AND 120W WINDS 20 KT OR LESS. SEAS 8 TO 
9 FT IN S TO SW SWELL.
.24 HOUR FORECAST S OF 01S BETWEEN 110 AND 116W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN S TO SW SWELL.
.36 HOUR FORECAST S OF A LINE FROM 03.4S96W TO 00N103W TO 
03.4S110W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN S TO SW SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

CONVECTION VALID AT 0900 UTC SAT MAY 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM A 1008 MB LOW PRESSURE LOCATED 
OVER NORTHERN COLOMBIA NEAR 10N74W TO 14N100W TO A 1009 MB LOW 
PRESSURE SITUATED NEAR 11N106W TO 06N125W. THE ITCZ CONTINUES 
FROM 06N125W TO 06N140W. SCATTERED MODERATE AND ISOLATED STRONG 
CONVECTION IS NOTED FROM 09N TO 15N BETWEEN 90W AND 100W, AND 
FROM 08N TO 11N BETWEEN 105W AND 110W. SIMILAR CONVECTIVE 
ACTIVITY IS NOTED OVER THE GULF OF TEHUANTEPEC.

.FORECASTER GR. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 0600 UTC MAY 18 2024.
24 HOUR FORECAST VALID 0600 UTC MAY 19 2024.
48 HOUR FORECAST VALID 0600 UTC MAY 20 2024.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N158W 26N160W 17N167W MOVING W SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 120 NM E AND 60 NM W OF TROUGH N OF 20N.
.24 HOUR FORECAST TROUGH 30N159W 25N161W 20N164W 15N172W.
.48 HOUR FORECAST TROUGH 30N159W 22N166W 15N172W.

.WINDS 20 TO 25 KT N OF 25N BETWEEN 177E AND 163W...AND N OF 26N
BETWEEN 156W AND 152W. E WINDS 20 TO 25 KT FROM 07N TO 15N E OF
156W...AND FROM 11N TO 23N BETWEEN 164E AND 174E.
.24 HOUR FORECAST WINDS 20 TO 25 KT N OF 28N BETWEEN 173W AND
163W...AND N OF 25N BETWEEN 161W AND 155W. E WINDS 20 TO 25 KT W
OF LINE 22N160E 21N166E 12N171E 11N160E...AND FROM 08N TO 20N E OF
156W.
.48 HOUR FORECAST WINDS 20 TO 25 KT N OF 27N BETWEEN 159W AND
154W. E WINDS 20 TO 25 KT FROM 08N TO 19N E OF 166W.

.OTHERWISE..WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.

.SEAS 12 TO 16 FT N OF LINE 30N177E 27N178E 23N179W 26N171W
30N169W. SEAS 8 TO 12 FT ELSEWHERE IN AREA BOUNDED BY 30N174E
30N152W 24N155W 14N140W 08N140W 03N150W 12N170W 06N180W 12N160E
26N160E 26N172E 30N174E.
.24 HOUR FORECAST SEAS 8 TO 10 FT IN AREA BOUNDED BY 24N160E
30N175E 10N173W 10N160E 24N160E...AND FROM 04N TO 19N E OF 166W.
SEAS 8 TO 9 FT N OF 26N BETWEEN 175W AND 155W.
.48 HOUR FORECAST SEAS 8 TO 10 FT N OF 28N BETWEEN 1612 AND 155W.
SEAS 8 TO 9 FT FROM 11N TO 20N W OF 167E...AND FROM 07N TO 19N E
OF 165W.

.OTHERWISE...SEAS 8 FT OR LESS OVER REMAINDER OF FORECAST AREA.

.ITCZ 06N140W 04N145W 06N162W 09N170W 09N175W 08N178W 05N171E.
ISOLATED TO SCATTERED MODERATE TSTMS WITHIN 150 NM OF ITCZ W OF
160W...AND WITHIN 90 NM OF ITCZ E OF 160W.

.ISOLATED MODERATE TSTMS S OF 16N W OF 171E.

$$

.FORECASTER JELSEMA. HONOLULU HI.