High Seas Forecast
Issued by NWS

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
700
FZPN02 KWBC 191125
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC WED AUG 19 2026

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 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 AUG 19.
24 HOUR FORECAST VALID 0600 UTC AUG 20.
48 HOUR FORECAST VALID 0600 UTC AUG 21.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.N OF 62N BETWEEN THE W COAST OF ALASKA AND 171W AREA OF N WINDS
TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.LOW 56N146W 1016 MB DRIFTING NW. WITHIN 180 NM E SEMICIRCLE AND
120 NM SE OF A LINE FROM 55N145W TO 45N161W WINDS TO 25 KT. SEAS
TO 2.5 M.
.24 HOUR FORECAST LOW 58N148W 1014 MB. BETWEEN 60 NM AND 360 NM
SE AND 120 NM AND 960 NM SW QUADRANTS WINDS TO 25 KT. SEAS TO 2.5
M.
.48 HOUR FORECAST LOW DISSIPATED. WITHIN 120 NM SE OF A LINE FROM
56N141W TO 40N156W WINDS TO 25 KT. SEAS LESS THAN 2.5 M.

.LOW 56N167W 1011 MB MOVING NE 10 KT. BETWEEN 180 NM AND 360 NM
SE...180 NM AND 540 NM SW AND 180 NM AND 360 NM NW QUADRANTS
WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 57N159W 1012 MB. BETWEEN 240 NM AND 600 NM
SW SEMICIRCLE WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW DISSIPATED. IN THE BERING SEA N OF 52N W OF
175W WINDS TO 25 KT. SEAS TO 3 M.

.FROM 30N TO 50N BETWEEN 116W AND 131W AREA OF NW TO N WINDS TO
25 KT. SEAS TO 3 M.
.24 HOUR FORECAST FROM 30N TO 53N BETWEEN 119W AND 133W AREA OF
NW TO N WINDS TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST FROM 30N TO 53N BETWEEN 120W AND 133W AREA OF
NW TO N WINDS TO 25 KT. SEAS TO 3 M.

.48 HOUR FORECAST WITHIN 240 NM N OF A LINE FROM 31N180W TO
39N167W  AREA OF NE WINDS TO 25 KT. SEAS TO 2.5 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 180 NM NW OF
A LINE FROM 54N143W TO 50N154W TO 43N161W.
.24 HOUR FORECAST DENSE FOG WITHIN 180 NM NW OF A LINE FROM
53N142W TO 49N148W AND WITHIN 60 NM NW OF A LINE FROM 50N150W TO
44N156W.
.48 HOUR FORECAST DENSE FOG WITHIN 180 NM NW OF A LINE FROM
55N138W TO 51N142W AND IN THE BERING SEA N OF 52N W OF 175W.

.FORECASTER FUTTERMAN. 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 WED AUG 19.
24 HOUR FORECAST VALID 0600 UTC THU AUG 20.
48 HOUR FORECAST VALID 0600 UTC FRI AUG 21.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROPICAL WAVE NEAR 136W. BROAD LOW PRES...INVEST EP90W...NEAR
09N136W 1009 MB. WITHIN 14N133W TO 15N134W TO 14N136W TO 13N137W
TO 11N136W TO 12N133W TO 14N133W WINDS 20 TO 25 KT. SEAS 2.5 TO
3.0 M.
.24 HOUR FORECAST TROPICAL WAVE NEAR 140W. LOW PRES...INVEST
EP90...NEAR 11N140W 1007 MB. WITHIN 16N138W TO 15N140W TO 13N140W
TO 12N137W TO 13N136W TO 16N138W WINDS 20 TO 25 KT. SEAS 2.5 TO
3.0 M.
.48 HOUR FORECAST TROPICAL WAVE W OF 140W. LOW PRES...INVEST
EP90...POSSIBLE TROPICAL CYCLONE...W OF AREA. OVER FORECAST
WATERS WITHIN 17N139W TO 20N140W TO 13N140W TO 15N139W TO
17N139W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED NE AND
SE
SWELL.

.WITHIN 16N94W TO 16N95W TO 15N96W TO 13N96W TO 13N95W TO 14N94W
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20
TO 30 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 14N96W TO 14N95W TO
15N94W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.

.WITHIN 11N86W TO 11N87W TO 11N90W TO 10N90W TO 10N89W TO 10N86W
TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO
30 KT. SEAS BUILDING TO 2.5 TO 3.0 M DOWNWIND OF THE GULF OF
PAPAGAYO.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.WITHIN 02N109W TO 00N134W TO 03.4S120W TO 02S106W TO 03.4S81W
TO 02N109W...EXCEPT LEE OF GALAPAGOS ISLANDS...WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.0 M IN SE TO S SWELL.
.24 HOUR FORECAST WITHIN 02N96W TO 04N96W TO 00N111W TO 00N136W
TO 03.4S120W TO 03S80W TO 02N96W...INCLUDING NEAR THE ENTRANCE
TO
THE GULF OF GUAYAQUIL AND EXCEPT LEE OF GALAPAGOS ISLANDS
...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SE TO S SWELL.
.48 HOUR FORECAST WITHIN 01N107W TO 02N122W TO 00N135W TO
01S120W TO 03.4S120W TO 03S107W TO 01N107W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN SE TO S SWELL.

.36 HOUR FORECAST TROPICAL WAVE NEAR 96W. WITHIN 12N97W TO
12N98W TO 12N100W TO 11N100W TO 11N98W TO 11N97W TO 12N97W WINDS
20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED N TO NE AND E TO SE
SWELL.
.48 HOUR FORECAST TROPICAL WAVE NEAR 102.5W. WITHIN 13N99W TO
13N101W TO 12N102W TO 11N102W TO 10N100W TO 11N97W TO 13N99W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED E AND SE TO S
SWELL.

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

CONVECTION VALID AT 0640 UTC WED AUG 19...

.TROPICAL WAVE NEAR 89W...SCATTERED MODERATE ISOLATED STRONG
FROM 12N TO 15N BETWEEN 89W AND 93W...AND FROM 04N TO 08N BETWEEN
88W AND 91W.

.TROPICAL WAVE NEAR 107W...SCATTERED TO NUMEROUS MODERATE
ISOLATED STRONG FROM 04N TO 13N BETWEEN 99W AND 110W.

.TROPICAL WAVE NEAR 136W...SCATTERED TO NUMEROUS MODERATE TO
STRONG FROM 01N TO 11N BETWEEN 131W AND 140W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM LOW PRES AT 11N74W TO 08N93W TO 09N116W TO
06N118W TO LOW PRES...NEW INVEST EP90...NEAR 09N136W TO 07N140W.
SCATTERED MODERATE TO STRONG FROM 04N TO 09N BETWEEN 119W AND
129W.

.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

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

SYNOPSIS VALID 0600 UTC AUG 19 2026.
24 HOUR FORECAST VALID 0600 UTC AUG 20 2026.
48 HOUR FORECAST VALID 0600 UTC AUG 21 2026.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE LALA NEAR 21.0N 169.7W 947 MB AT 0900 UTC AUG 19
MOVING NW OR 305 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 115 KT
GUSTS 140 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM N
SEMICIRCLE...90 NM SE QUADRANT AND 50 NM SW QUADRANT.  SEAS 4 M
OR GREATER WITHIN 180 NM N SEMICIRCLE...105 NM SE QUADRANT AND
135 NM SW QUADRANT WITH SEAS TO 10 M. SEAS 2.5 TO 4 M ELSEWHERE
FROM 17N TO 26N BETWEEN 165W AND 175W. WINDS 20 TO 30 KT
ELSEWHERE FROM 18N TO 26N BETWEEN 164W AND 174W. SCATTERED
MODERATE TO STRONG TSTMS WITHIN 60 NM OF CENTER.
.24 HOUR FORECAST HURRICANE LALA NEAR 23.1N 171.7W. MAXIMUM
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS
WITHIN 90 NM NW AND SE QUADRANTS...110 NM NE QUADRANT AND 60 NM
SW QUADRANT. SEAS 4 TO 10 M FROM 21N TO 26N BETWEEN 168W AND
175W. SEAS 2.5 TO 4 M ELSEWHERE FROM 19N TO 27N BETWEEN 166W AND
179W. WINDS 20 TO 30 KT ELSEWHERE FROM 21N TO 27N BETWEEN 166W
AND 174W.
.48 HOUR FORECAST HURRICANE LALA NEAR 26.1N 171.8W. MAXIMUM
SUSTAINED WINDS 90 KT GUSTS 110 KT. TROPICAL STORM FORCE WINDS
WITHIN 110 NM NW AND SE QUADRANTS...130 NM NE QUADRANT AND 80 NM
SW QUADRANT. SEAS 4 TO 10 M FROM 23N TO 29N BETWEEN 168W AND 176W.
SEAS 2.5 TO 4 M ELSEWHERE N OF 21N W OF 167W. WINDS 20 TO 30 KT
ELSEWHERE FROM 23N TO 30N BETWEEN 166W AND 176W.

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

SEE THE LATEST BULLETIN ISSUED BY NHC UNDER WMO HEADER WTPA22
PHFO.


...GALE WARNING...
.24 HOUR FORECAST NEW LOW NEAR 11N140W 1008 MB. WINDS 20 TO 25
KT AND SEAS 2.5 TO 3 M WITHIN 240 NM N SEMICIRCLE OF LOW.
.48 HOUR FORECAST POSSIBLE T.C. LOW NEAR 12N143W 1000 MB. WINDS
25 TO 35 KT WITHIN 150 NM N SEMICIRCLE. WINDS 20 TO 30 KT AND
SEAS 2.5 TO 4 M ELSEWHERE FROM 10N TO 19N BETWEEN 140W AND
147W.


.SYNOPSIS AND FORECAST

.LOW 20N148W 1012 MB...TROUGH FROM 14N154W TO LOW TO 25N146W...
BOTH MOVING W SLOWLY. ISOLATED MODERATE TSTMS FROM 20N TO 24N
BETWEEN 143W AND 149W.
.24 HOUR FORECAST LOW OPENED TO A TROUGH FROM 17N151W TO 25N151W.
.48 HOUR FORECAST TROUGH FROM 20N155W TO 25N156W.

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

.SEAS 2.5 M OR LESS OVER THE REMAINDER OF FORECAST AREA.

.MONSOON TROUGH 07N140W 07N142W 09N146W 08N154W 13N170W 09N180W.
SCATTERED MODERATE TSTMS S OF TROUGH E OF 153W...AND W OF
165W...AND WITHIN 180 NM N OF TROUGH E OF 143W...AND W OF 157W.
ISOLATED MODERATE TSTMS ELSEWHERE S OF 14N.


$$

.FORECASTER TSAMOUS. HONOLULU HI.