536
FZPN03 KNHC 101550
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC SUN AUG 10 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

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

SYNOPSIS VALID 1200 UTC SUN AUG 10.
24 HOUR FORECAST VALID 1200 UTC MON AUG 11.
48 HOUR FORECAST VALID 1200 UTC TUE AUG 12.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM IVO NEAR 21.9N 116.1W 1006 MB AT 1500 UTC AUG 10
MOVING WNW OR 290 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM E
SEMICIRCLE...20 NM SW QUADRANT AND 30 NM NW QUADRANT.  SEAS 4 M
OR GREATER WITHIN 30 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE WITH
SEAS TO 4.0 M. ELSEWHERE WITHIN 22N115W TO 23N116W TO 22N117W TO
21N116W TO 22N116W TO 21N116W TO 22N115W WINDS 20 TO 33 KT. SEAS
3.0 TO 3.5 M. REMAINDER OF AREA WITHIN 23N114W TO 24N115W TO
23N117W TO 22N117W TO 21N116W TO 22N114W TO 23N114W WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.0 M IN E TO SE SWELL.
.12 HOUR FORECAST TROPICAL DEPRESSION IVO NEAR 22.5N 117.5W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW IVO NEAR 23.0N
119.6W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 24N119W
TO 24N120W TO 23N120W TO 23N119W TO 23N118W TO 24N119W WINDS 20
TO 25 KT. SEAS 2.5 TO 3.5 M IN E TO SE SWELL. ELSEWHERE WITHIN
24N118W TO 25N119W TO 24N120W TO 23N120W TO 22N119W TO 23N118W TO
24N118W WINDS 20 KT OR LESS. SEAS 2.5 M IN S SWELL.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW IVO NEAR 23.2N
124.2W. MAXIMUM SUSTAINED WINDS 15 KT GUSTS 20 KT. CONDITIONS
IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

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.

.WITHIN 11N123W TO 10N129W TO 01N133W TO 03S120W TO 03.4S104W TO
02N119W TO 11N123W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S
TO SW SWELL.
.24 HOUR FORECAST WITHIN 03N128W TO 04N131W TO 02N133W TO
00N132W TO 00N129W TO 01N127W TO 03N128W WINDS 20 KT OR LESS.
SEAS 2.5 M IN SE TO S SWELL.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.12 HOUR FORECAST WITHIN 30N131W TO 30N137W TO 29.5N135.5W TO
29.5N133.5W TO 30N131W WINDS 20 KT OR LESS. SEAS 2.5 M IN N TO
NE SWELL.
.24 HOUR FORECAST WITHIN 30N133W TO 30N140W TO 29N138W TO
29N135W TO 30N133W WINDS 20 KT OR LESS. SEAS 2.5 M IN NE SWELL.
.48 HOUR FORECAST N OF 29.5N W OF 139.5W WINDS 20 KT OR LESS.
SEAS 2.5 M IN NE SWELL.

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

CONVECTION VALID AT 1500 UTC SUN AUG 10...

.TROPICAL STORM IVO...NUMEROUS MODERATE ISOLATED STRONG
WITHIN 60 NM S SEMICIRCLE AND SCATTERED MODERATE ELSEWHERE
WITHIN 90 NM S SEMICIRCLE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 1011 MB LOW PRES NEAR 10.5N75.5W TO 09N89W
TO 08.5N106W TO 10N109W THEN RESUMES FROM NEAR 16N116W TO
13N126W TO BEYOND 07N140W. SCATTERED TO LOCALLY NUMEROUS MODERATE
TO STRONG CONVECTION FROM 02N TO 12N E OF 91W...AND FROM 07.5N
TO 12N BETWEEN 98W AND 111W. SCATTERED MODERATE ISOLATED STRONG
CONVECTION FROM 13N TO 16N BETWEEN 114W AND 128W.

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.