HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC THU JUN 18 2026
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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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
VOSOPS@NOAA.GOV(LOWERCASE).
FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).
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 1800 UTC JUN 18.
24 HOUR FORECAST VALID 1800 UTC JUN 19.
48 HOUR FORECAST VALID 1800 UTC JUN 20.
.WARNINGS.
...GALE WARNING...
.FROM 39N TO 50N BETWEEN 124W AND 130W AREA OF N TO NW WINDS 25
TO 35 KT. SEAS 3 TO 4.5 M. ELSEWHERE FROM 34N TO 53N BETWEEN 124W
AND 137W WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST FROM 43N TO 53N BETWEEN 126W AND 132W AREA OF N
TO NW WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M...HIGHEST NEAR
49N128W. ELSEWHERE FROM 31N TO 55N BETWEEN 125W AND 139W WINDS TO
25 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST NEW LOW NEAR 49N125W 1010 MB. WITHIN 360 NM SW
AND 540 NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 4
M...HIGHEST S AND SW OF CENTER. ELSEWHERE FROM 32N TO 55N BETWEEN
124W AND 136W WINDS TO 25 KT. SEAS TO 3 M.
...GALE WARNING...
.LOW W OF AREA 48N167E 995 MB NEARLY STATIONARY. WITHIN 420 NM NE
QUADRANT WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE FROM 34N
TO 54N W OF 176W WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW W OF AREA 48N167E 1001 MB. WITHIN 600 NM NE
QUADRANT WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST LOW WELL W OF AREA AND ASSOCIATED CONDITIONS
DIMINISHED.
.SYNOPSIS AND FORECAST.
.LOW 43N156W 1014 MB MOVING NW 15 KT. WITHIN 600 NM NW AND E
SEMICIRCLES WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 47N158W 1011 MB. WITHIN 420 NM W AND 480 NM
E SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 48N156W 1012 MB. WITHIN 420 NM SW AND 540
NM E SEMICIRCLES WINDS TO 25 KT. SEAS TO 3 M.
.LOW 32N161W 1016 MB MOVING NE 10 KT. WITHIN 600 NM NW QUADRANT
WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER NEAR 33N157W 1017
MB. WITHIN 720 NM W QUADRANT WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER NEAR 34N152W 1018
MB. CONDITIONS DIMINISHED.
.LOW JUST W OF AREA 41N178E 1015 MB MOVING NE 10 KT. WITHIN 360
NM NE AND 420 NM SE QUADRANTS WINDS 20 TO 30 KT. SEAS TO 2.5 TO 4
M.
.24 HOUR FORECAST LOW 45N179W 1017 MB. WITHIN 300 NM NE AND 420
NM SE QUADRANTS WINDS TO 25 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 37N TO 52N
BETWEEN 147W AND 158W...FROM 58N TO 63N BETWEEN 165W AND
171W...AND N OF 66N W OF ALASKA.
.24 HOUR FORECAST DENSE FOG FROM 40N TO 54N BETWEEN 148W AND
160W...FROM 58N TO 62N BETWEEN 162W AND 170W...AND N OF 65N W OF
ALASKA.
.48 HOUR FORECAST DENSE FOG FROM 48N TO 57N BETWEEN 148W AND
162W...FROM 44N TO 49N W OF 177W...AND N OF 63N BETWEEN 164W AND
170W.
.FORECASTER ANDERSON. 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 1800 UTC THU JUN 18.
24 HOUR FORECAST VALID 1800 UTC FRI JUN 19.
48 HOUR FORECAST VALID 1800 UTC SAT JUN 20.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 02N108W TO 00N115W TO 01N119W TO 00N122W TO 03.4S120W TO
03.4S106W TO 02N108W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
MIXED SE AND SW SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.42 HOUR FORECAST WITHIN 03S102W TO 02S113W TO 01S120W TO
03.4S120W TO 03S112W TO 03.4S102W TO 03S102W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.48 HOUR FORECAST LITTLE CHANGE.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 1900 UTC THU JUN 18...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO 14N104W TO 07N124W. ITCZ FROM
07N124W TO BEYOND 06N140W. ISOLATED TO WIDELY SCATTERED MODERATE
WITHIN 180 TO 240 NM EITHER SIDE OF MONSOON TROUGH AND ITCZ
ACROSS MAJORITY OF THOSE WATERS.
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 1800 UTC JUN 18 2026.
24 HOUR FORECAST VALID 1800 UTC JUN 19 2026.
48 HOUR FORECAST VALID 1800 UTC JUN 20 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.FRONT 30N163W 25N168W 2N4175W THENCE TROUGH 23N180W MOVING E
SLOWLY E OF 168W AND NEARLY STATIONARY W OF 168W.
.24 HOUR FORECAST FRONT 30N160W 25N166W 25N163W THENCE TROUGH
23N178W.
.48 HOUR FORECAST FRONT 30N158W 28N161W THENCE TROUGH 24N167W.
.TROUGH 26N149W 24N150W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH 27N151W 23N150W.
.48 HOUR FORECAST TROUGH DISSIPATED.
.TROUGH 23N156W 21N159W 18N161W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 22N162W 16N164W.
.48 HOUR FORECAST TROUGH 24N165W 17N168W.
.TROUGH 17N145W 09N145W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 16N152W 12N152W.
.48 HOUR FORECAST TROUGH DISSIPATED.
.TROUGH 12N171W 07N172W 04N171W MOVING WSW SLOWLY. ISOLATED
MODERATE TSTMS FROM 10N TO 06N BETWEEN 175W AND 167W.
.24 HOUR FORECAST TROUGH 10N173W 03N178W.
.48 HOUR FORECAST TROUGH MOVED W OF AREA.
.ITCZ 05N140W 04N146W 03N152W 01N160W. ISOLATED MODERATE TSTMS
FROM ITCZ FROM 07N TO 02N E OF 155W.
.ISOLATED MODERATE TSTMS FROM 11N TO 08N E OF 142W.
.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LESS OVER ENTIRE FORECAST
AREA.
$$
.FORECASTER TROTTER. HONOLULU HI.=