FZPN03 KNHC 230959
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC MON SEP 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC MON SEP 23.
24 HOUR FORECAST VALID 0600 UTC TUE SEP 24.
48 HOUR FORECAST VALID 0600 UTC WED SEP 25.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM JOHN NEAR 14.4N 98.5W 1000 MB AT 0900 UTC SEP 23
MOVING NNE OR 025 DEG AT 3 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 20 NM OF CENTER
EXCEPT 30 NM NE QUADRANT. SEAS 12 FT OR GREATER WITHIN 30 NM OF
CENTER WITH SEAS TO 15 FT. ELSEWHERE WITHIN 120 NM N SEMICIRCLE
AND 240 NM S SEMICIRCLE OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO
12 FT. FROM 08N TO 10N BETWEEN 98W AND 104W SW TO W WINDS 20 TO
25 KT. SEAS 8 TO 9 FT. FROM 11N TO 14N BETWEEN 104W AND 110W W
WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. NUMEROUS TSTMS FROM 11N TO
17N BETWEEN 91W AND 102W.
.24 HOUR FORECAST TROPICAL STORM JOHN NEAR 15.4N 97.6W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS
WITHIN 50 NM S SEMICIRCLE...40 NM NE QUADRANT AND 30 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM OF CENTER WITH SEAS
TO 19 FT. ELSEWHERE OVER FORECAST WATERS WITHIN 120 NM NE
SEMICIRCLE AND 240 NM SW SEMICIRCLE OF CENTER WINDS 20 TO 33 FT.
SEAS 8 TO 12 FT. FROM 08N TO 11N BETWEEN 95W AND 102W AND FROM
09N TO 14N BETWEEN 102W AND 115W SW TO W WINDS 20 TO 25 KT. SEAS
8 TO 11 FT. FROM 05N TO 08N BETWEEN 93W AND 102W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN SE TO S SWELL.
.48 HOUR FORECAST TROPICAL STORM JOHN INLAND NEAR 16.0N 97.0W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE
WINDS WITHIN 40 NM NE QUADRANT...80 NM SE QUADRANT...50 NM SW
QUADRANT...AND 30 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
60 NM S SEMICIRCLE OF CENTER WITH SEAS TO 15 FT. ELSEWHERE FROM
09N TO 16N BETWEEN 95W AND 101W SW WINDS 20 TO 30 KT. SEAS 8 TO
12 FT. FROM 08N TO 13N BETWEEN 101W AND 108W SW TO W WINDS 20 TO
25 KT. SEAS 8 TO 10 FT. FROM 06N TO 08N BETWEEN 89W AND 101W
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN W TO NW SWELL MIXED WITH
SE 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.

.FROM 11N TO 14N W OF 139W WINDS 20 KT OR LESS. SEAS TO 8 FT IN
DECAYING S SWELL.
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.06 HOUR FORECAST N OF 29N BETWEEN 127W AND 132W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN N SWELL.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 0945 UTC MON SEP 23...

.TROPICAL STORM JOHN...NUMEROUS STRONG WITHIN 60 NM OF CENTER
AND IN A WIDE BAND FROM 14N TO 17N BETWEEN 100W AND 102W.
NUMEROUS MODERATE ISOLATED STRONG ELSEWHERE FROM 11N TO 17N
BETWEEN 96W AND 102W. SCATTERED MODERATE FROM 14N TO 16N BETWEEN
102W AND 105W.

.SCATTERED MODERATE ISOLATED STRONG WITHIN 30 NM OF LINE
FROM 07N95W TO 12N95W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 11N86W TO 14N96W. IT RESUMES AT
16N102W TO LOW PRES NEAR 16N110W 1007 MB TO 11N124W TO 12N140W.
ASIDE FROM CONVECTION DESCRIBED ABOVE...SCATTERED MODERATE
ISOLATED STRONG WITHIN 60 NM N OF TROUGH BETWEEN 86W AND 90W.

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.