959
FZPN03 KNHC 090903
HSFEP2
HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC SAT AUG 09 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SAT AUG 09.
24 HOUR FORECAST VALID 0600 UTC SUN AUG 10.
48 HOUR FORECAST VALID 0600 UTC MON AUG 11.
.WARNINGS.
..TROPICAL STORM WARNING
.TROPICAL STORM IVO NEAR 20.6N 112.4W 1001 MB AT 0900 UTC AUG 09
MOVING W OR 280 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60
KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM OF CENTER EXCEPT 20 NM
SW QUADRANT. SEAS 4 M OR GREATER WITHIN 60 NM N SEMICIRCLE AND 30 NM
S SEMICIRCLE WITH SEAS TO 5.5 M. ELSEWHERE WITHIN 90 NM OF CENTER...
EXCEPT 120 NM E QUADRANT 20 TO 33 KT. SEAS 2.5 TO 4 M. REMAINDER OF
AREA FROM 19N TO 23N BETWEEN 109W AND 114W WINDS 20 KT OR LESS. SEAS
2.5 TO 3 M IN MIXED SE AND SW SWELL.
.24 HOUR FORECAST TROPICAL STORM IVO NEAR 21.3N 115.1W. MAXIMUM
SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN
30 NM N SEMICIRCLE AND 20 NM S SEMICIRCLE. LITTLE CHANGE IN RADIUS
OF SEAS 4 M OR GREATER WITH TO SEAS TO 5 M. ELSEWHERE WITHIN 90 NM N
SEMICIRCLE AND 60 NM SEMICIRCLE WINDS 20 TO 33 KT. SEAS 2.5 TO 4 M.
REMAINDER OF AREA FROM 20N TO 23N BETWEEN 112W AND 117W WINDS 20 KT
OR LESS. SEAS 2.5 TO 3 M IN MIXED SE AND SW SWELL.
.48 HOUR FORECAST POST-TROPICAL IVO NEAR 22.0N 119.3W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN
20 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS TO 4 M WITHIN 30 NM
OF CENTER. ELSEWHERE WITHIN 60 NM OF CENTER...EXCEPT 90 NM NE
QUADRANT WINDS 20 TO 33 KT. SEAS 2.5 TO 3.5 M. REMAINDER OF AREA
FROM 21N TO 24N BETWEEN 118W AND 120W WINDS 20 KT OR LESS. SEAS 2.5
TO 3 M IN MIXED SE AND SW 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.
N OF 29N BETWEEN 112W AND 114W
INCLUDING THE NORTHERN GULF
OF CALIFORNIA...SE TO S WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.15 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FROM 19N TO 23N W OF 139W WINDS 20 KT OR LESS. SEAS TO 2.5 M
IN NE SWELL.
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.S OF 09N BETWEEN 117W AND 126W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M
IN S TO SW SWELL.
.12 HOUR FORECAST S OF 10N BETWEEN 118W AND 130W WINDS 20 KT OR
LESS. SEAS 2.5 M IN S TO SW SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST S OF 06N BETWEEN 128W AND 132W WINDS 20 KT OR
LESS. SEAS TO 2.5 M IN DECAYING S TO SW SWELL.
.S OF 02S BETWEEN 110W AND 117W WINDS 20 KT OR LESS. SEAS 2.5 M IN S
TO SW SWELL.
.12 HOUR FORECAST CONDITIONS TO MERGE WITH AREA OF S TO SW SWELL
DESCRIBED ABOVE.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0845 UTC SAT AUG 09...
TROPICAL STORM IVO
NUMEROUS MODERATE TO STRONG WITHIN 60 NM
SW QUADRANT. NUMEROUS MODERATE ELSEWHERE WITHIN 120 NM SW QUADRANT
AND WITHIN 60 NM SE QUADRANT. SCATTERED MODERATE WITHIN 30 NM OF
A LINE FROM 20N109W TO 22N109W.
SCATTERED MODERATE FROM 15N TO 16N BETWEEN 94W AND 95W
WITHIN 60 NM OF 12N87W AND WITHIN 60 NM OF 06N78W.
INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH
MONSOON TROUGH AXIS EXTENDS FROM 09N84W TO 09N90W TO 08N100W TO
12N110W TO 12N120W TO 08N130W TO 13N140W. SCATTERED MODERATE WITHIN
120 NM S OF TROUGH BETWEEN 112W AND 115W...FROM 12N TO 16N W OF
138W...ALSO WITHIN 60 NM N OF TROUGH BETWEEN 125W AND 127W AND
WITHIN 30 NM OF TROUGH BETWEEN 98W AND 105W.
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.
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