987
FZPN02 KWBC 111725
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC MON AUG 11 2025

CCODE/2:31:12:11:00/AOW+POR+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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).

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 1200 UTC AUG 11.
24 HOUR FORECAST VALID 1200 UTC AUG 12.
48 HOUR FORECAST VALID 1200 UTC AUG 13.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE HENRIETTE NEAR 28.8N 156.5W 986 MB AT 1500 UTC AUG 11
MOVING NW OR 310 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 75 KT
GUSTS 90 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM NW AND SE
QUADRANTS...60 NM NE QUADRANT AND 30 NM SW QUADRANT.  SEAS 4 M
OR GREATER WITHIN 70 NM W SEMICIRCLE...140 NM NE QUADRANT AND 90
NM SE QUADRANT WITH SEAS TO 6 M.
.24 HOUR FORECAST HURRICANE HENRIETTE NEAR 32.5N 161.1W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT. LITTLE CHANGE IN RADIUS OF
TROPICAL STORM FORCE WINDS AND SEAS 4 M OR GREATER WITH SEAS TO 8
M. ELSEWHERE FROM 31N TO 35N BETWEEN 158W AND 163W WINDS 20 TO 33
KT. SEAS TO 5 M.
.48 HOUR FORECAST TROPICAL STORM HENRIETTE NEAR 36.5N 166.4W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE
WINDS WITHIN 40 NM NW AND SE QUADRANTS...50 NM NE QUADRANT AND
20 NM SW QUADRANT. SEAS 4 M OR GREATER FROM 35N TO 38N BETWEEN
164W AND 167W WITH SEAS TO 6.5 M. ELSEWHERE FROM 34N TO 38N
BETWEEN 164W AND 168W WINDS 20 TO 33 KT. SEAS TO 4 M.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

...GALE WARNING...
.FROM 45N TO 51N BETWEEN 125W AND 132W AREA OF N TO NW WINDS 25
TO 40 KT. SEAS TO 4 M. ELSEWHERE WITHIN 420 NM W OF A LINE FROM
46N124W TO 40N127W TO 34N137W AREA OF N TO NE WINDS 20 TO 30 KT.
SEAS TO 4 M.
.24 HOUR FORECAST FROM 43N TO 51N BETWEEN 126W AND 133W AREA OF N
TO NW WINDS 25 TO 40 KT. SEAS TO 4 M. ELSEWHERE WITHIN 360 NM W
AND NW OF A LINE FROM 43N127W TO 37N135W TO 33N144W WINDS 20 TO
30 KT. SEAS TO 4 M.
.48 HOUR FORECAST FROM 46N TO 51N BETWEEN 126W AND 131W WINDS 20
TO 30 KT. SEAS TO 3 M. ELSEWHERE WITHIN 180 NM EITHER SIDE OF A
LINE FROM 42N130W AND 31N151W WINDS TO 25 KT. SEAS TO 3 M.

...GALE WARNING...
.LOW NW OF AREA 58N177E 990 MB MOVING NE 15 KT. WITHIN 480 NM E
QUADRANT WINDS 25 TO 35 KT. SEAS TO 4 M. ELSEWHERE N OF 55N
BETWEEN 166W AND 172E...AND WITHIN 300 NM E OF A FRONT EXTENDING
FROM 55N176W TO 50N177W TO 43N178E WINDS 20 TO 30 KT. SEAS TO 3.5
M.
.24 HOUR FORECAST LOW 61N175W 997 MB. FROM 54N TO 66N BETWEEN
162W AND 171W WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW 63N166W 1001 MB. WITHIN 240 NM W AND NW
QUADRANTS WINDS 25 TO 35 KT. SEAS TO 2.5 M.

...GALE WARNING...
.LOW 48N172E 1005 MB MOVING NE 30 KT. WITHIN 300 NM SE AND S OF A
FRONT EXTENDING FROM THE LOW TO 44N160E WINDS 20 TO 30 KT. SEAS
TO 3 M.
.12 HOUR FORECAST LOW 50N177W 1004 MB. WITHIN 360 NM E AND 480 NM
S QUADRANTS WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST LOW 52N171W 1006 MB. WITHIN 240 NM E AND WITHIN
240 NM E AND SE OF A FRONT TO EXTEND FROM THE LOW TO 50N170W TO
45N179W WINDS 25 TO 35 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW 56N154W 1010 MB. FROM 47N TO 52N BETWEEN
150W AND 163W WINDS 20 TO 30 KT. SEAS TO 3.5 M.

...GALE WARNING...
.36 HOUR FORECAST NEW LOW 47N170E 1001 MB. WITHIN 420 NM S
QUADRANT WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW 49N177E 1002 MB. FROM 43N TO 51N BETWEEN
176W AND 173EW WINDS 25 TO 35 KT. SEAS TO 4 M.

.SYNOPSIS AND FORECAST.

.LOW 55N151W 1018 MB MOVING NE 30 KT. FROM 51N TO 56N BETWEEN
139W AND 153W WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DIMINISHED.

.LOW 41N163W 1014 MB MOVING N 15 KT. FROM 35N TO 42N BETWEEN 158W
AND 163 WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DIMINISHED.

.KLYUCHEVSKOY VOLCANO 56.03N 160.38E CONTINUES TO ERUPT. VOLCANIC
ASH MAY BE REACHING THE SURFACE FROM 54N TO 58N BETWEEN 173E TO
160E. MARINERS SHOULD EXERCISE CAUTION. IF MARINERS ENCOUNTER
VOLCANIC ASH OR FLOATING VOLCANIC DEBRIS YOU ARE ENCOURAGED TO
REPORT THE OBSERVATION TO THE OCEAN PREDICTION CENTER BY CALLING
301-683-1520.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 180 NM EITHER
SIDE OF A LINE FROM 58N138W TO 44N157W...FROM 42N TO 50N BETWEEN
176W AND 160W...AND FROM 50N TO 59N BETWEEN 175W AND 178E.
.24 HOUR FORECAST DENSE FOG FROM 46N TO 52N BETWEEN 129W AND
163W...WITHIN 120 NM EITHER SIDE OF A LINE FROM 51N170W TO
43N177E...AND FROM 43N TO 48N BETWEEN 160E AND 177E.
.48 HOUR FORECAST DENSE FOG WITHIN AN AREA BOUNDED BY A LINE FROM
56N149W TO 48N137W TO 44N165W TO 56N149W...AND FROM 43N TO 50N
BETWEEN 165W AND 167E.

.FORECASTER HUFFMAN. 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 1200 UTC MON AUG 11.
24 HOUR FORECAST VALID 1200 UTC TUE AUG 12.
48 HOUR FORECAST VALID 1200 UTC WED AUG 13.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.POST-TROPICAL CYCLONE IVO NEAR 23.2N 119.6W 1008 MB AT 1500 UTC
AUG 11 MOVING WNW OR 295 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 25
KT
GUSTS 35 KT. WITHIN 90 NM NE QUADRANT WINDS 20 TO 25 KT. SEAS 2.5
TO 3 M. ELSEWHERE FROM 22N TO 24N BETWEEN 118 AND 120W WINDS 20
KT
OR LESS. SEAS TO 2.5 M IN MIXED SWELL.
.12 HOUR FORECAST POST-TROPICAL REMNANT LOW IVO NEAR 23.4N
121.2W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. WITHIN 60 NM
NE
QUADRANT WINDS 20 KT OT LESS. SEAS TO 2.5 M IN MIXED SWELL.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW IVO NEAR 23.5N
123.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. WINDS 20 KT
OR LESS.
SEAS LESS THAN 2.5 M.
.36 HOUR FORECAST...DISSIPATED.

.N OF 29N W OF 135W WINDS 20 KT OR LESS. SEAS TO 2.5 M IN NE
SWELL.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.S OF 05N BETWEEN 127W AND 133W WINDS 20 KT OR LESS. SEAS TO 2.5
M IN MIXED SW AND NW SWELL.
.12 HOUR FORECAST 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 1500 UTC MON AUG 11...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH AXIS EXTENDS FROM 10N84W TO 09N93W TO 07N110W
TO 14N120W TO 11N133W. CLUSTERS OF MODERATE TO STRONG CONVECTION
ARE
NOTED FROM 07N TO 13N BETWEEN 90W AND 95W. SCATTERED MODERATE TO
ISOLATED STRONG CONVECTION CAN BE FOUND FROM 05N TO 08N E OF
80W...INCLUDING THE ENTRANCE TO THE GULF OF PANAMA...FROM 07N TO
12N
BETWEEN 100W AND 115W...AND FROM 08N TO 10N BETWEEN 137W AND
140W.

.FORECASTER GR. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

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

SYNOPSIS VALID 1200 UTC AUG 11 2025.
24 HOUR FORECAST VALID 1200 UTC AUG 12 2025.
48 HOUR FORECAST VALID 1200 UTC AUG 13 2025.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE HENRIETTE NEAR 28.8N 156.5W 986 MB AT 1500 UTC AUG 11
MOVING NW OR 310 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 75 KT
GUSTS 90 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM NW AND SE
QUADRANTS...60 NM NE QUADRANT AND 30 NM SW QUADRANT. WINDS 20 TO
33 KT ELSEWHERE FROM 29N TO 26N BETWEEN 150W AND 155W. SEAS 4 M
OR GREATER WITHIN 140 NM OF NE QUADRANT...90 NM OF SE
QUADRANT...70 NM OF SW QUADRANT...AND 70 NM OF NW QUADRANT WITH
SEAS UP TO 6 M. SEAS 2.5 TO 4 M ELSEWHERE N OF 20 N BETWEEN 152W
AND 157W. ISOLATED MODERATE TSTMS WITHIN 120 NM OF CENTER.
.24 HOUR FORECAST HURRICANE HENRIETTE N OF AREA.
.48 HOUR FORECAST TROPICAL STORM HENRIETTE N OF AREA.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

SEE LATEST BULLETIN FROM CPHC UNDER WMO HEADER WTPA23 PHFO FOR
ADDITIONAL DETAILS.

.SYNOPSIS AND FORECAST.

.FRONT 30N169W 26N175W 27N172E MOVING SE 10 KT E OF 173W AND
NEARLY STATIONARY ELSEWHERE. ISOLATED MODERATE TSTMS WITHIN 120
NM OF FRONT.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N171W 25N178W
25N171E.
.48 HOUR FORECAST TROUGH 30N177W 23N167E.

.48 HOUR FORECAST NEW TROUGH 30N144W 24N143W.

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

.SEAS 2.5 M OR LOWER REMAINDER OF FORECAST AREA.

.ITCZ 11N140W 10N145W 06N156W. ISOLATED MODERATE TSTMS WITHIN
180 NM OF ITCZ.

.ISOLATED MODERATE TSTMS FROM 16N TO 09N BETWEEN 179E AND 172E.

$$

.FORECASTER THOMAS. HONOLULU HI.