194
FZPN03 KNHC 251617
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC WED SEP 25 2024

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

THE NATIONAL WEATHER SERVICE IS ACCEPTING PUBLIC COMMENTS UNTIL
OCTOBER 16 2024 ON A PROPOSAL TO REPLACE FEET WITH METERS WHEN
DESCRIBING SEAS IN A VARIETY OF NATIONAL MARINE CENTER TEXT AND
GRAPHICAL PRODUCTS FOR THE HIGH SEAS AREAS ONLY.
TO LEARN MORE PLEASE VISIT (WEB ADDRESS LOWERCASE)
HTTPS://OCEAN.WEATHER.GOV/PROPOSED-METERS.PHP

SECURITE

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 1200 UTC WED SEP 25.
24 HOUR FORECAST VALID 1200 UTC THU SEP 26.
48 HOUR FORECAST VALID 1200 UTC FRI SEP 27.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM JOHN NEAR 16.2N 101.4W 1000 MB AT 1500 UTC SEP
25 MOVING E OR 080 DEG AT 2 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM W
SEMICIRCLE...40 NM NE QUADRANT AND 70 NM SE QUADRANT. SEAS 12 FT
OR GREATER WITHIN 0 NM N SEMICIRCLE AND 210 NM S SEMICIRCLE WITH
SEAS TO 14 FT. ELSEWHERE WITHIN 16N99W TO 17N105W TO 13N106W TO
12N109W TO 10N107W TO 10N98W TO 16N99W WINDS 20 TO 33 KT. SEAS 11
TO 12 FT. REMAINDER OF AREA WITHIN 12N87W TO 15N95W TO 18N104W
TO 11N113W TO 09N98W TO 10N90W TO 12N87W...INCLUDING THE GULF OF
TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN W TO NW
SWELL.
.24 HOUR FORECAST TROPICAL STORM JOHN NEAR 16.7N 101.1W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS
WITHIN 60 NM NE QUADRANT...110 NM SE QUADRANT...100 NM SW
QUADRANT...AND 40 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
240 NM IN E SEMICIRCLE...280 NM SW QUADRANT...AND 120 NM NW
QUADRANT WITH SEAS TO 17 FT. ELSEWHERE WITHIN 14N96W TO 17N106W
TO 13N107W TO 11N114W TO 10N108W TO 11N98W TO 14N96W WINDS 20 TO
33 KT. SEAS 11 TO 12 FT. REMAINDER OF AREA WITHIN 15N94W TO
19N104W TO 18N109W TO 11N115W TO 09N103W TO 12N89W TO
15N94W...INCLUDING NEAR CABO CORRIENTES AND THE GULF OF
TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN W TO NW
SWELL.
.48 HOUR FORECAST TROPICAL DEPRESSION JOHN NEAR 17.8N 101.2W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS 12 FT OR GREATER
WITHIN 270 NM S SEMICIRCLE WITH SEAS TO 19 FT. ELSEWHERE WITHIN
15N95W TO 18N102W TO 14N104W TO 10N111W TO 09N103W TO 11N98W TO
15N95W...INCLUDING THE GULF OF TEHUANTEPEC...WINDS 20 TO 30 KT.
SEAS 11 TO 12 FT. REMAINDER OF AREA WITHIN 15N94W TO 20N108W TO
26N116W TO 14N112W TO 08N106W TO 10N97W TO 15N94W...INCLUDING
NEAR CABO CORRIENTES AND WITHIN 60 NM OF SHORE AND THE GULF OF
TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW 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.

.06 HOUR FORECAST WITHIN 30N135W TO 30N140W TO 27N140W TO
29N137W TO 30N135W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW
SWELL.
.24 HOUR FORECAST WITHIN 28N129W TO 30N127W TO 30N136W TO
28N140W TO 22N140W TO 28N129W WINDS 20 KT OR LESS. SEAS 8 TO 10
FT IN NW SWELL.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.30 HOUR FORECAST WITHIN 11N130W TO 12N131W TO 11N133W TO
10N133W TO 10N132W TO 11N130W WINDS 20 KT OR LESS. SEAS 8 FT IN
S SWELL.
.48 HOUR FORECAST WITHIN 13N128W TO 13N129W TO 12N130W TO
11N129W TO 11N127W TO 12N126W TO 13N128W WINDS 20 KT OR LESS.
SEAS 8 FT IN W SWELL.

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

CONVECTION VALID AT 1200 UTC WED SEP 25...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH AXIS EXTENDS FROM 14N109W TO BEYOND 11N140W.
SCATTERED MODERATE LOCALLY STRONG FROM 08N TO 11N BETWEEN 132W
AND 140W. SCATTERED MODERATE FROM 11N TO 14N BETWEEN 110W AND
121W.

$$
.FORECASTER ADAMS. NATIONAL HURRICANE CENTER.