High Seas Forecast
Issued by NWS

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000
FZPN03 KNHC 242227 CCA
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC MON JUL 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MON JUL 24.
24 HOUR FORECAST VALID 1800 UTC TUE JUL 25.
48 HOUR FORECAST VALID 1800 UTC WED JUL 26.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE HILARY NEAR 14.5N 104.9W 986 MB AT 2100 UTC JUL 24
MOVING WNW OR 300 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 75 KT
GUSTS 90 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM NE
QUADRANT...40 NM SE QUADRANT...30 NM SW QUADRANT...AND 50 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 45 NM S SEMICIRCLE...90
NM NE QUADRANT AND 60 NM NW QUADRANT WITH SEAS TO 25 FT.
ELSEWHERE FROM 12N TO 18N BETWEEN 102W AND 108W WINDS 20 TO 33
KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST HURRICANE HILARY NEAR 15.5N 107.8W. MAXIMUM
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS
WITHIN 80 NM NE QUADRANT...60 NM SE QUADRANT...50 NM SW
QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
120 NM N SEMICIRCLE AND 90 NM S SEMICIRCLE WITH SEAS TO 30 FT.
ELSEWHERE WITHIN 210 NM N SEMICIRCLE AND 120 NM S SEMICIRCLE
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA FROM 13N
TO 20N BETWEEN 104W AND 112W WINDS 20 KT OR LESS. SEAS TO 10 FT
IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE HILARY NEAR 16.6N 112.0W. MAXIMUM
SUSTAINED WINDS 105 KT GUSTS 130 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
180 NM N SEMICIRCLE AND 120 NM S SEMICIRCLE WITH SEAS TO 33 FT.
ELSEWHERE WITHIN 210 NM N SEMICIRCLE AND 120 NM S SEMICIRCLE
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA WITHIN 360
NM N SEMICIRCLE AND 270 NM S SEMICIRCLE WINDS 20 KT OR LESS.
SEAS 8 TO 12 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE HILARY NEAR 17.7N 115.8W. MAXIMUM
SUSTAINED WINDS 95 KT GUSTS 115 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE HILARY NEAR 18.7N 119.3W. MAXIMUM
SUSTAINED WINDS 80 KT GUSTS 100 KT.
.120 HOUR FORECAST HURRICANE HILARY NEAR 19.5N 122.5W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT.

...HURRICANE WARNING...
.TROPICAL STORM IRWIN NEAR 15.0N 117.8W 997 MB AT 2100 UTC JUL
24 MOVING W OR 280 DEG AT 3 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 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 AND 30 NM S SEMICIRCLE WITH
SEAS TO 18 FT. ELSEWHERE WITHIN 150 NM N SEMICIRCLE AND 120 NM S
SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST HURRICANE IRWIN NEAR 15.2N 119.2W. 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
90 NM S SEMICIRCLE WITH SEAS TO 24 FT. ELSEWHERE WITHIN 150 NM N
SEMICIRCLE AND 120 NM S SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO
12 FT. REMAINDER OF AREA FROM 11N TO 19N BETWEEN 115W AND 123W
WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE IRWIN NEAR 14.8N 121.3W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 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 90 NM S SEMICIRCLE WITH
SEAS TO 24 FT. ELSEWHERE WITHIN 150 NM N SEMICIRCLE AND 120 NM S
SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA
FROM 10N TO 20N BETWEEN 116W AND 127W WINDS 20 KT OR LESS. SEAS
8 TO 12 FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM IRWIN NEAR 14.2N 122.7W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM IRWIN NEAR 15.0N 123.0W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
.120 HOUR FORECAST TROPICAL STORM IRWIN NEAR 17.5N 124.5W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.

...TROPICAL STORM WARNING...
.TROPICAL STORM GREG NEAR 14.5N 134.3W 1003 MB AT 2100 UTC JUL
24 MOVING W OR 275 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM OF CENTER
EXCEPT 70 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 132W AND 137W WINDS
20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA W OF LINE FROM
25N140W TO 18N130W TO 10N132W WINDS 20 KT OR LESS. SEAS 8 TO 11
FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM GREG NEAR 15.9N 136.8W. 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 30 NM N SEMICIRCLE WITH
SEAS TO 13 FT. ELSEWHERE FROM 15N TO 20N BETWEEN 135W AND 139W
WINDS 20 TO 33 KT. SEAS 8 TO 11 FT. REMAINDER OF AREA W OF A
LINE FROM 20N135W TO 17N133W TO 08N140W WINDS 20 KT OR LESS.
SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL DEPRESSION GREG NEAR 17.3N 139.5W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. FROM 17N TO 21N W OF
137W WINDS 20 TO 30 KT. SEAS TO 10 FT IN MIXED SWELL.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW GREG NEAR 17.1N
142.6W. 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
145.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW GREG NEAR 15.0N
148.0W. 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 2000 UTC MON JUL 24...

.HURRICANE HILARY...NUMEROUS MODERATE SCATTERED STRONG
WITHIN 120 NM OF CENTER. CLUSTER OF MODERATE TO STRONG FROM 09N
TO 15N BETWEEN 98W AND 103W.

.TROPICAL STORM IRWIN...CLUSTER OF MODERATE TO STRONG WITHIN 120
NM NW SEMICIRCLE. SCATTERED MODERATE ELSEWHERE FROM 12N TO 19N
BETWEEN 115W AND 120W.

.TROPICAL STORM GREG...SCATTERED MODERATE TO STRONG
WITHIN 120 NM SW SEMICIRCLE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH IS ANALYZED E OF THE TROPICAL CYCLONE
ACTIVITY FROM 09N83W TO 09N90W TO 12N97W. THE ITCZ EXTENDS FROM
11N136W TO BEYOND 10N140W. SCATTERED MODERATE FROM 05N TO 10N E
OF 91W AND WITHIN 90 NM OF THE TROUGH AXIS BETWEEN 91W AND 96W.

$$
.FORECASTER LATTO. NATIONAL HURRICANE CENTER.


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