000
FZPN03 KNHC 250328
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC TUE JUL 25 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

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

SYNOPSIS VALID 0000 UTC TUE JUL 25.
24 HOUR FORECAST VALID 0000 UTC WED JUL 26.
48 HOUR FORECAST VALID 0000 UTC THU JUL 27.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE HILARY NEAR 15.0N 105.7W 982 MB AT 0300 UTC JUL 25 
MOVING WNW OR 300 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 85 KT 
GUSTS 105 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM N 
SEMICIRCLE...50 NM SE QUADRANT AND 40 NM SW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 90 NM N SEMICIRCLE AND 45 NM S SEMICIRCLE WITH 
SEAS TO 26 FT. ELSEWHERE FROM 12N TO 18N BETWEEN 103W AND 108W 
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
.24 HOUR FORECAST HURRICANE HILARY NEAR 16.1N 109.0W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS 
WITHIN 80 NM N SEMICIRCLE...60 NM SE QUADRANT AND 50 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM N SEMICIRCLE AND 
60 NM S SEMICIRCLE WITH SEAS TO 35 FT. ELSEWHERE FROM 14N TO 19N 
BETWEEN 106W AND 111W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. 
REMAINDER OF AREA FROM 12N TO 20N BETWEEN 104W AND 113W WINDS 20 
KT OR LESS. SEAS TO 11 FT IN MIXED SWELL. 
.48 HOUR FORECAST HURRICANE HILARY NEAR 17.1N 113.0W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS 
WITHIN 100 NM NE QUADRANT...80 NM SE QUADRANT...70 NM SW 
QUADRANT...AND 90 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
150 NM N SEMICIRCLE AND 90 NM S SEMICIRCLE WITH SEAS TO 34 FT. 
ELSEWHERE FROM 14N TO 20N BETWEEN 109W AND 116W WINDS 20 TO 33 
KT. SEAS 9 TO 12 FT. REMAINDER OF AREA FROM 11N TO 23N BETWEEN 
107W AND 118W WINDS 20 KT OR LESS. SEAS TO 11 FT IN MIXED SWELL. 
.72 HOUR FORECAST HURRICANE HILARY NEAR 18.1N 116.7W. MAXIMUM 
SUSTAINED WINDS 90 KT GUSTS 110 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE HILARY NEAR 19.1N 120.2W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT.
.120 HOUR FORECAST HURRICANE HILARY NEAR 19.9N 123.4W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT.

...HURRICANE WARNING...
.TROPICAL STORM IRWIN NEAR 15.2N 118.2W 993 MB AT 0300 UTC JUL 
25 MOVING WNW OR 285 DEG AT 3 KT. MAXIMUM SUSTAINED WINDS 60 KT 
GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM NW AND SE 
QUADRANTS...70 NM NE QUADRANT AND 30 NM SW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 90 NM N SEMICIRCLE...45 NM SE QUADRANT AND 30 
NM SW QUADRANT WITH SEAS TO 20 FT. ELSEWHERE WITHIN 120 NM N 
SEMICIRCLE AND 90 NM S SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO 
12 FT. REMAINDER OF AREA WITHIN 180 NM OF CENTER WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN MIXED SWELL. 
.24 HOUR FORECAST HURRICANE IRWIN NEAR 15.1N 119.9W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS 
WITHIN 50 NM S SEMICIRCLE...80 NM NE QUADRANT AND 60 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM N SEMICIRCLE AND 
60 NM S SEMICIRCLE WITH SEAS TO 25 FT. ELSEWHERE WITHIN 150 NM 
OF CENTER WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA 
FROM 11N TO 20N BETWEEN 116W AND 123W WINDS 20 KT OR LESS. SEAS 
8 TO 11 FT IN MIXED SWELL. 
.48 HOUR FORECAST TROPICAL STORM IRWIN NEAR 14.5N 121.7W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE 
WINDS WITHIN 80 NM N SEMICIRCLE AND 60 NM S SEMICIRCLE. SEAS 12 
FT OR GREATER WITHIN 120 NM N SEMICIRCLE AND 60 NM S SEMICIRCLE 
WITH SEAS TO 22 FT. ELSEWHERE WITHIN 150 NM OF CENTER WINDS 20 
TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA FROM 09N TO 20N 
BETWEEN 116W AND 127W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN 
MIXED SWELL. 
.72 HOUR FORECAST TROPICAL STORM IRWIN NEAR 14.2N 122.8W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM IRWIN NEAR 15.5N 123.0W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
.120 HOUR FORECAST TROPICAL STORM IRWIN NEAR 18.0N 123.0W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.

...TROPICAL STORM WARNING...
.TROPICAL STORM GREG NEAR 14.8N 134.9W 1003 MB AT 0300 UTC JUL 
25 MOVING WNW OR 285 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 40 KT 
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM OF CENTER 
EXCEPT 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 30 NM S 
SEMICIRCLE...60 NM NE QUADRANT AND 90 NM NW QUADRANT WITH SEAS 
TO 15 FT. ELSEWHERE FROM 13N TO 19N BETWEEN 133W AND 138W WINDS 
20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA W OF LINE FROM 
24N140W TO 18N130W TO 06N130W WINDS 20 KT OR LESS. SEAS 8 TO 10 
FT IN MIXED SWELL. 
.24 HOUR FORECAST TROPICAL STORM GREG NEAR 16.3N 137.3W. MAXIMUM 
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS 
WITHIN 0 NM S SEMICIRCLE...30 NM NE QUADRANT AND 40 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM N SEMICIRCLE WITH 
SEAS TO 13 FT. ELSEWHERE FROM 15N TO 20N W OF 135W WINDS 20 TO 
33 KT. SEAS TO 11 FT IN MIXED SWELL. 
.48 HOUR FORECAST TROPICAL DEPRESSION GREG NEAR 17.5N 140.2W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. FROM 17N TO 21N W OF 
138W WINDS 20 TO 30 KT. SEAS TO 9 FT IN MIXED SWELL. 
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW GREG NEAR 17.0N 
143.1W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW GREG NEAR 16.0N 
146.0W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW GREG NEAR 15.0N 
148.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 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.

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

CONVECTION VALID AT 0145 UTC TUE JUL 25...

.HURRICANE HILARY...NUMEROUS MODERATE SCATTERED STRONG 
WITHIN 150 NM N SEMICIRCLE AND 90 NM S SEMICIRCLE. CLUSTER OF 
MODERATE FROM 08N TO 18N BETWEEN 100W AND 104W.

.TROPICAL STORM IRWIN...CLUSTERS OF MODERATE TO STRONG WITHIN 
120 NM N SEMICIRCLE AND 90 NM S SEMICIRCLE. SCATTERED MODERATE 
ELSEWHERE FROM 13N TO 18N BETWEEN 116W AND 120W.

.TROPICAL STORM GREG...SCATTERED MODERATE TO STRONG 
WITHIN 120 NM N SEMICIRCLE AND 60 NM S SEMICIRCLE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH IS ANALYZED E OF THE TROPICAL CYCLONE 
ACTIVITY FROM 09N79W TO 09N90W TO 12N99W. THE ITCZ EXTENDS FROM 
12N136W TO BEYOND 10N140W. SCATTERED MODERATE FROM 05N TO 11N E 
OF 97W AND WITHIN 90 NM OF THE ITCZ AXIS. 

$$
.FORECASTER LATTO. NATIONAL HURRICANE CENTER.