501
FZPN01 KWBC 231621
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC TUE SEP 23 2025

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SEP 23.
24 HOUR FORECAST VALID 1200 UTC SEP 24.
48 HOUR FORECAST VALID 1200 UTC SEP 25.

.WARNINGS.

...TYPHOON WARNING...
.TYPHOON NEOGURI W OF AREA NEAR 30.6N 153.3E AT 1500 UTC SEP 23
MOVING NE OR 060 DEG AT 02 KT. TROPICAL STORM FORCE WINDS WITHIN
160 NM NE...150 NM SE...140 NM SW...AND 260 NM NW QUADRANTS.
SEAS 4 M OR GREATER W OF AREA WITH SEAS TO 8.5 M. ELSEWHERE S OF
39N W OF 170E WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST TYPHOON NEOGURI W OF AREA NEAR 31.5N 156.2E.
MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE
WINDS WITHIN 240 NM NE...170 NM SE...170 NM SW...AND 290 NM NW
QUADRANTS. SEAS 4 M OR GREATER WITHIN 300 NM NE AND 240 NM SE
QUADRANTS WITH SEAS TO 6 M. ELSEWHERE S OF 36 N W OF 170 E WINDS
20 TO 33 KT. SEAS TO 4 M.
.48 HOUR FORECAST TYPHOON NEOGURI W OF AREA NEAR 32.2N 155.2E.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE
WINDS WITHIN 190 NM NE...100 NM SE...110 NM SW...AND 180 NM NW
QUADRANTS. SEAS 4 M OF GREATER W OF A LINE FROM 30N170E TO
37N165E WITH SEAS TO 5.5 M. ELSEWHERE S OF 37N W OF 167E WINDS
TO 25 KT. SEAS TO 4 M.

...STORM WARNING...
.LOW 5N178E 975 MB MOVING E 20 KT. BETWEEN 300 NM AND 600 NM
E...BETWEEN 240 NM AND 840 NM SE...AND BETWEEN 120 NM AND 540 NM
S QUADRANTS WINDS 35 TO 50 KT. SEAS 3 TO 6 M. ELSEWHERE WITHIN
420 NM NE...720 NM E...960 NM SE...AND 720 NM S QUADRANTS WINDS
25 TO 40 KT. SEAS 2.5 TO 6 M....HIGHEST FROM 47N TO 52N BETWEEN
178W AND 170E. ALSO N OF 40N W OF 180W WINDS 20 TO 30 KT. SEAS
TO 4 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 57N168W 984 MB.
WITHIN 300 NM SW AND S QUADRANTS...AND FROM 49N TO 54N BETWEEN
153W AND 170W WINDS 35 TO 50 KT. SEAS 5 TO 9 M. ELSEWHERE N OF A
LINE FROM 50N180W TO 44N170W TO 44N150W TO 50N136W WINDS 25 TO
40 KT. SEAS 2.5 TO 6 M...HIGHEST FROM 52N TO 57N BETWEEN THE
ALEUTIANS AND 178W...AND FROM 48N TO 55N BETWEEN 152W AND 172W.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 57N162W AND SECOND
LOW 59N148W 988 MB. WITHIN 480 NM S QUADRANT OF SECOND LOW...AND
WITHIN 420 NM S QUADRANT OF FIRST LOW WINDS 25 TO 40 KT. SEAS 4
TO 7 M...HIGHEST S OF SECOND LOW. ELSEWHERE FROM 47N TO 61N
BETWEEN 150W AND 178E...AND N OF 47N BETWEEN 129W AND 150W WINDS
20 TO 30 KT. SEAS 2.5 TO 5 M....HIGHEST S OF SECOND LOW.

...GALE WARNING...
.LOW 39N143W 1018 MB MOVING SW 05 KT. WITHIN 180 NM N AND NW OF
A LINE FROM 32N170W TO 32N155W TO 41N137W WINDS 20 TO 30 KT.
SEAS TO 3 M.
.12 HOUR FORECAST LOW 37N142W 1015 MB. WITHIN 300 NM N AND 540
NM W QUADRANTS WINDS 25 TO 35 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW 37N145W 1018 MB. FROM 30N TO 40N BETWEEN
142W AND 170W WINDS 25 TO 35 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW S OF AREA. FROM 30N TO 37N BETWEEN 150W
AND 165W WINDS 20 TO 30 KT. SEAS TO 4 M.

...GALE WARNING...
.24 HOUR FORECAST LOW NW OF AREA NEAR 57N172E 1001 MB. N OF A
LINE FROM 48N180W TO 53N166E WINDS 25 TO 35 KT. SEAS 3 TO 5 M.
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS ABSORBED BY LOW
57N162W DESCRIBED ABOVE.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 38N163E 1006 MB. EXCEPT WHERE
DESCRIBED WITH TYPHOON NEOGURI...WITHIN 180 NM NW OF A LINE FROM
42N170E TO 36N160E WINDS 30 TO 45 KT. SEAS 3 TO 6 M. ELSEWHERE
FROM 36N TO 44N W OF 176E WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.
.48 HOUR FORECAST LOW 47N106W 1011 MB. FROM 40N TO 47N BETWEEN
153W AND 180W WINDS 25 TO 35 KT. SEAS TO 4 M.

...GALE WARNING...
.48 HOUR FORECAST FROM 37N TO 44N W OF 180W AREA OF NE TO E
WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.

.SYNOPSIS AND FORECAST.

.COMPLEX LOW WITH FIRST LOW 60N149W 1000 MB NEARLY STATIONARY
AND SECOND LOW 57N141W MOVING N 10 KT. N OF 50N BETWEEN 133W AND
155W WINDS 20 TO 30 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOWS DISSIPATED. CONDITIONS ABSORBED BY LOW
57N168W DESCRIBED IN WARNING SECTION ABOVE.

.FROM 35N TO 45N BETWEEN 124W AND 130W AREA OF N WINDS TO 25 KT.
SEAS TO 3 M.
.24 HOUR FORECAST FROM 38N TO 50N BETWEEN 123W AND 132W AREA OF
NW TO N WINDS TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST FROM 35N TO 49N BETWEEN 124W AND 130W AREA OF
NW TO N WINDS 20 TO 30 KT. SEAS TO 3.5 M.

.RESUSPENDED ASH IS POSSIBLE IN THE VICINITY OF THE KATMAI
VOLCANO NEAR 58.17N 154.58W. THERE IS NO ERUPTION. IF MARINERS
ENCOUNTER VOLCANIC ASH...REPORT THE OBSERVATION TO THE OCEAN
PREDICTION CENTER AT 301-683-1520.

.RESUSPENDED ASH IS POSSIBLE IN THE VICINITY OF THE SHEVELUCH
VOLCANO NEAR 56.39N 161.22E. THERE IS NO ERUPTION. IF MARINERS
ENCOUNTER VOLCANIC ASH...REPORT THE OBSERVATION TO THE OCEAN
PREDICTION CENTER AT 301-683-1520.

.VOLCANIC ASH EMISSIONS ARE CONTINUING FROM KRASHENINNIKOV
VOLCANO AT POSITION 54.36N 160.16E NEAR THE CENTER OF KAMCHATKA
ISLAND. TRACE AMOUNTS OF ASHFALL MAY REACH THE SURFACE. IF
MARINERS ENCOUNTER VOLCANIC ASH OR FLOATING VOLCANIC
DEBRIS...REPORT THE OBSERVATION TO THE OCEAN PREDICTION CENTER
BY CALLING 301-683-1520.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 48N TO 51N
BETWEEN 168W AND 171W.
.24 HOUR FORECAST CONDITIONS IMPROVED.

.FORECASTER EHRBAR. OCEAN PREDICTION CENTER.

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 TUE SEP 23.
24 HOUR FORECAST VALID 1200 UTC WED SEP 24.
48 HOUR FORECAST VALID 1200 UTC THU SEP 25.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE NARDA NEAR 15.8N 107.3W 981 MB AT 1500 UTC SEP 23
MOVING W OR 270 DEG AT 11 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 40 NM SW QUADRANT. SEAS 4 M OR
GREATER WITHIN 75 NM NE QUADRANT...45 NM SE QUADRANT...30 NM SW
QUADRANT...AND 60 NM NW QUADRANT WITH SEAS TO 8 M. ELSEWHERE
WITHIN 17N105W TO 18N106W TO 17N109W TO 15N109W TO 14N107W TO
15N105W TO 17N105W WINDS 20 TO 33 KT. SEAS 2.5 TO 4 M. REMAINDER
OF AREA WITHIN 17N104W TO 18N105W TO 18N108W TO 16N105W TO
14N107W TO 14N103W TO 17N104W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.5 M IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE NARDA NEAR 15.5N 111.0W. MAXIMUM
SUSTAINED WINDS 95 KT GUSTS 115 KT. TROPICAL STORM FORCE WINDS
WITHIN 70 NM N SEMICIRCLE AND 60 NM S SEMICIRCLE. SEAS 4 M OR
GREATER WITHIN 90 NM N SEMICIRCLE AND 60 NM S SEMICIRCLE WITH
SEAS TO 9 M. ELSEWHERE WITHIN 17N110W TO 18N113W TO 14N114W TO
13N112W TO 15N111W TO 14N108W TO 17N110W WINDS 20 TO 33 KT. SEAS
3 TO 5.5 M. REMAINDER OF AREA WITHIN 18N108W TO 17N114W TO
13N109W TO 13N114W TO 09N109W TO 13N103W TO 18N108W WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.5 M IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE NARDA NEAR 15.7N 115.7W. MAXIMUM
SUSTAINED WINDS 95 KT GUSTS 115 KT. TROPICAL STORM FORCE WINDS
WITHIN 90 NM N SEMICIRCLE AND 80 NM S SEMICIRCLE. SEAS 4 M OR
GREATER 120 NM N SEMICIRCLE AND 90 NM S SEMICIRCLE WITH SEAS TO
10 M. ELSEWHERE WITHIN 16N111W TO 19N113W TO 19N119W TO 16N120W
TO 12N117W TO 12N113W TO 16N111W WINDS 20 TO 33 KT. SEAS 3 TO 5.5
M. REMAINDER OF AREA WITHIN 17N110W TO 21N117W TO 17N122W TO
11N119W TO 08N114W TO 11N108W TO 17N110W WINDS 20 KT OR LESS.
SEAS 2.5 TO 4 M IN MIXED SWELL.

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

.SYNOPSIS AND FORECAST.

.24 HOUR FORECAST WITHIN 17N100W TO 19N104W TO 17N104W TO
16N103W TO 15N102W TO 15N101W TO 17N100W SE WINDS 20 TO 25 KT.
SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 22N106W TO 22N108W TO 21N109W TO
19N108W TO 18N107W TO 17N105W TO 22N106W...INCLUDING NEAR CABO
CORRIENTES...S WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M IN S SWELL.

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

CONVECTION VALID AT 1530 UTC TUE SEP 23...

.HURRICANE NARDA...NUMEROUS STRONG WITHIN 60 NM N SEMICIRCLE
AND 90 NM S SEMICIRCLE. BAND THAT CONSISTS OF NUMEROUS MODERATE
TO STRONG IS FROM 16N TO 18N BETWEEN 107.5W AND 100W...FROM 14N
TO 16N BETWEEN 109W AND 110W AND FROM 13N TO 14N BETWEEN 106W
AND
109W. NUMEROUS MODERATE TO STRONG ELSEWHERE FROM 13N TO 17N
BETWEEN 104.5W AND 119W.

.TROPICAL WAVE ALONG 88W N OF 08N...SCATTERED MODERATE ISOLATED
STRONG WITHIN 120 NM W OF WAVE FROM 10N TO 13N AND WITHIN 60 NM
E OF WAVE FROM 11N TO 12.5N.

.SCATTERED MODERATE ISOLATED STRONG FROM 18N TO 23N BETWEEN 106W
AND 109W. SCATTERED MODERATE FROM 08N TO 10N BETWEEN 96W AND
100W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 11N86W TO 13N90W TO 15N98.5W.
IT RESUMES WSW OF NARDA AT 15N112W TO 15N120W TO 14N130W TO
10N140W. SCATTERED MODERATE ISOLATED STRONG WITHIN 120 NM S
OF TROUGH BETWEEN 95W AND 98W...AND ALSO W OF TROUGH FROM 14N TO
16N BETWEEN 98.5W AND 102W. SCATTERED MODERATE WITHIN 30 NM OF
TROUGH BETWEEN 96W AND 98.5W.

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.