000
FZPN03 KNHC 290925
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC TUE AUG 29 2023

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

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

SYNOPSIS VALID 0600 UTC TUE AUG 29.
24 HOUR FORECAST VALID 0600 UTC WED AUG 30.
48 HOUR FORECAST VALID 0600 UTC THU AUG 31.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM IRWIN NEAR 19.5N 127.1W 1001 MB AT 0900 UTC AUG 
29 MOVING W OR 275 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 35 KT 
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM N 
SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 
90 NM NE QUADRANT...30 NM SE QUADRANT...0 NM SW QUADRANT...AND 
60 NM NW QUADRANT WITH SEAS TO 16 FT. ELSEWHERE WITHIN 180 NM NE 
QUADRANT...90 NM SE QUADRANT...60 NM SW QUADRANT AND 510 NM NW 
QUADRANT WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST TROPICAL STORM IRWIN NEAR 19.2N 132.2W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE 
WINDS WITHIN 0 NM OF CENTER EXCEPT 70 NM NW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 60 NM OF CENTER...EXCEPT 180 NM NE QUADRANT 
WITH SEAS TO 16 FT. ELSEWHERE WITHIN 180 NM E SEMICIRCLE...90 NM 
SW QUADRANT AND 420 NM NW QUADRANT WINDS 20 TO 33 KT. SEAS 8 TO 
12 FT. 
.36 HOUR FORECAST TROPICAL DEPRESSION IRWIN NEAR 19.1N 134.4W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 120 NM NE 
QUADRANT...60 NM S SEMICIRCLE AND 420 NM NW QUADRANT WINDS 20 TO 
30 KT. SEAS 8 TO 12 FT...EXCEPT 9 TO 14 FT FROM 17N TO 21N 
BETWEEN 134W AND 136W. REMAINDER OF THE AREA FROM 12N TO 28N W 
OF 129W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW IRWIN NEAR 19.2N 
136.3W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. FROM 18N TO 
28N W OF 133W NE WINDS 20 TO 30 KT. SEAS 8 TO 12 FT...EXCEPT 9 
TO 13 FT FROM 19N TO 21N BETWEEN 135W AND 138W. REMAINDER OF THE 
AREA FROM 11N TO 28N W OF 131W WINDS 20 KT OR LESS. SEAS 8 TO 10 
FT IN MIXED SWELL.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW IRWIN NEAR 19.5N 
139.2W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW IRWIN NEAR 19.6N 
141.4W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW IRWIN NEAR 20.5N 
143.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.

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 N OF 28N BETWEEN 120W AND 123W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN N SWELL.
.24 HOUR FORECAST N OF 27N BETWEEN 119W AND 126W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN N SWELL.
.48 HOUR FORECAST N OF 26N BETWEEN 120W AND 133W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN N SWELL.  

.S OF 08N BETWEEN 120W AND 136W AND ALSO S OF A LINE FROM 
05N120W TO 02S111W TO 03.4S104W WINDS 20 KT OR LESS. SEAS 8 TO 9 
FT IN S SWELL.
.24 HOUR FORECAST S OF 11N BETWEEN 130W AND 139W AND ALSO S OF A 
LINE FROM 07N130W TO 02N120W TO 03N108W TO 01N97W TO 03.4S91W 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN S SWELL.  
.48 HOUR FORECAST S OF A LINE FROM 04N117W TO 03N99W TO 03S91W 
TO 01N87W TO 03.4S82W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN S 
SWELL. 

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

CONVECTION VALID AT 0915 UTC TUE AUG 29...

.TROPICAL STORM IRWIN...SCATTERED MODERATE WITHIN 150 NM W 
QUADRANT.

.SCATTERED MODERATE ISOLATED STRONG FROM 21N TO 23N BETWEEN 
106W AND 107W AND OVER THE GULF OF CALIFORNIA FROM 25N TO 27N
BETWEEN 109W AND 111W.

.SCATTERED MODERATE WITHIN 30 NM OF 14N123W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 11N86W TO 14N94W TO 15N105W TO 
18N114W. IT RESUMES S OF IRWIN NEAR 11N126W TO 07N132W. THE ITCZ 
EXTENDS FROM 08N132W TO 08N140W. SCATTERED MODERATE FROM 08N TO 
12N BETWEEN 88W AND 90W AND WITHIN 30 NM OF THE ITCZ BETWEEN 
134W AND 137W.

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.